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We fabricated the chiral ArDPEN/Ru species within the nanoparticles of the aluminium (Al/ArDPEN/Ru). Electron microscopy photos and the anatomical properties revealed the uniformly dispersed nanoparticles with active single‐site ruthenium/diamine centres on the exterior nanoparticles shell. Al/ArDPEN/Ru showed catalytic properties for the reaction of CO2 with oxetane, to synthesize the corresponding polycarbonate with minimal amount of ether linkages. TMC is prepared by a backbiting method following ring‐opening of oxetane by the anion initiator, subsequent to carbon dioxide insertion into the ruthenium/diamine bond. The preparation of the copolymer is shown to proceed mostly by method of the anionic ring‐opening polymerization of preformed trimethylene carbonate in the presence of an anion in solution. In addition, the catalyst anatomical heterogeneity of Al/ArDPEN/Ru was characterized by various techniques, including XRD, SEM, TGA, TEM, VSM, and FT‐IR. No leaching of ruthenium into the solution was observed. [ABSTRACT FROM AUTHOR]

In order to carbonize o-phenylenediamine with CO2, an effective approach was used with UV light irradiation by Sn(IV) doping DFNS (SnD) supported CdSnO3 as a catalyst (CdSnO3/SnD). In this catalyst, SnD with the ratios of Si/Sn in the range of 6 to 50 were obtained using the Direct Hydrothermal Synthesis (DHS), and the nanoparticles of CdSnO3 on the surfaces of SnD were reduced in situ. Scanning Electron Microscope (SEM), X-ray Diffraction (XRD), Fourier Transform Infrared Spectroscopy (FT-IR), X-ray Energy Dispersive Spectroscopy (EDS), and Transmission Electron Microscopy (TEM) were utilized for characterizing CdSnO3/SnD. It was found that CdSnO3/SnD nanostructures could be used for synthesizing o-phenylenediamines due to their effective and novel catalytic behavior through the reaction between o-phenylenediamines and CO2. [ABSTRACT FROM AUTHOR]

DFNS is functionalized by using graphene oxide (GO) (N-enriched GO) as a robust anchor. Hence, the metal nanoparticles (NPs) are well-dispersed without aggregation over the DFNS/GO (DFNS/GO/X, X = Pd, Au, Cu). For preventing the restacking of graphene sheets, the supramolecular polymerized GO behaves not only as a spacer but also as a nitrogen source for producing active centers in the case of metal NP attachments. In this way, the nitrogen over the level of the GO sheets adjusts with copper ions in order to synthesis palladium nanoparticles. Water pollution is known as a significant global concern that can threat the entire biosphere and can influence the lives of many millions of people in the world. Water pollution can make many diseases and millions of people die annually due to illness caused by the dirty water. 4-nitrophenol and also 2-nitroaniline, which have been specified as hazardous toxic. In addition, wastes contaminants are in USEPA's list. Therefore, developing novel approaches are essential in order to eliminate these waste contaminants. In the case of the synthesize of colors and drugs, powerful performers o-phenylenediamine (o-PDA) and powerful performers were intended as considerable intermediate that preparation from 2-NA as well as 4-NP. As-prepared DFNS/GO/X (X = Pd, Au, Cu) nanostructures are used for the 4-nitrophenol and 2-nitroaniline reduction that causing high efficiency of the reaction by taking into account of chemoselectivity. [ABSTRACT FROM AUTHOR]

New N, N′ -substituted imidazolium salts and their corresponding diiodopyridinepalladium (II) complexes were successfully synthesized and supported on KCC-1 (KCC-1/Pd-NHC-Py) has been developed for synthesis of pyridopyrimidinones, providing excellent yields of the corresponding products with remarkable chemoselectivity. This morphology ultimately leads to higher catalytic activity for the KCC-1-supported nanoparticles. The KCC-1/Pd-NHC-Py NPs were thoroughly characterized by using TEM, FESEM, TGA, and BET. We supported a drug on the surface of a silica and used as a catalyst for synthesis another drug. [ABSTRACT FROM AUTHOR]

Fibrous nanosilica (KCC-1) as a catalyst support was investigated in terms of stability, recycling, and reusability. For the first time, CO2 transformation was performed via the synthesis and application of KCC-1 together with sodium tripolyphosphate (STPP) and 3-aminopropyltriethoxysilane (APTES) as its functionalized derivative. To this goal, KCC-1/STPP NPs were applied to act as a nanocatalyst with excellent catalytic activities under green reaction conditions. [ABSTRACT FROM AUTHOR]

Abstract: This study investigates the potential application of an efficient, easily recoverable and reusable KCC-1 nanoparticle-supported Salen/Ru(II) catalyst in the synthesis of 2-oxazolidinones from CO2, and propargylic amines. The KCC-1/Salen/Ru(II) NPs were thoroughly characterized by using TEM, SEM, TGA, FT-IR, ICP-MS, and BET. This observation was exploited in the direct and selective chemical fixation of CO2, affording high degrees of CO2 capture and conversion. The recycled catalyst has been analyzed by ICP-MS showing only minor changes in the morphology after the reaction, thus confirming the robustness of the catalyst.Graphical Abstract: [ABSTRACT FROM AUTHOR]

We have found that fibrous nanosilica (KCC‐1) can used as a excellent support for the synthesis of highly sparse nanoparticles and has high surface area that was functionalized with Tetrathia‐azacyclopentadecane (TTACP) groups acting as the strong performers so that the Ag nanoparticles were well‐dispersed without aggregation on the fibers of the KCC‐1 microspheres (KCC‐1/TTACP/Ag). We enthusiasm to report one‐pot synthesis of 3‐Acyloxylindolines for first time from N‐tosyl‐2‐vinylaniline, and benzoic acid in the presence of KCC‐1/TTACP/Ag as a catalyst. [ABSTRACT FROM AUTHOR]

The aim of this investigation is recycling, reusability and stability of the KCC-1 as a suport's catalyst. KCC-1 and its functionalized derivatives of aminopropyltriethoxysilane and tripolyphosphate (ATPP) have been synthesized, and applied to one-pot synthesis of 3-Acyloxylindolines for first time from 2-aminostyrene with carboxylic acid. [ABSTRACT FROM AUTHOR]

We have found that fibrous nanosilica (KCC-1) can used as a excellent support for the synthesis of highly sparse nanoparticles. KCC-1 has high surface area that was functionalized with 1,3-bis(dimethylthiocarbamoyloxy)benzene groups acting as the strong performers so that the Pd (II) was complex without aggregation on the fibers of the KCC-1 microspheres (KCC-1/BTB/Pd). For synthesis of 3-sulfenylindoles from aryl iodide, indoles, and thiourea used from the KCC-1/BTB/Pd NPs as a catalyst that showed excellent catalytic activities under green conditions. Compared with the traditional substrate, KCC-1/BTB/Pd substantially increases protection and the accessibility of the nanoparticle sites due to its three dimensional hierarchical structure. [ABSTRACT FROM AUTHOR]

Novel heterogeneous catalyst systems comprised of a fibrous nanosilica-supported nano-Ni@Pd-based ionic liquid (KCC-1/IL/Ni@Pd) are described for the cyclization of propargylic amines with CO2 to provide 2-oxazolidinones. KCC-1 with high surface area was functionalized with IL acting as a robust anchor so that the nano-Ni@Pd was well dispersed on the fibres of the KCC-1 microspheres, without aggregation. Because of the amplification effect of IL, high loading capacities of the nanocatalysts were achieved. The reported synthesis includes several advantages like solvent-free conditions, operational simplicity, short reaction times, environmentally benign reaction conditions, cost effectiveness, high atom economy and excellent yields, making it a genuinely green protocol. [ABSTRACT FROM AUTHOR]

This study investigates the potential application of the (Ammonio)butane-1-sulfonate modified Spirulina (Arthrospira) platensis biomasses in the synthesis of 3-aryl-2-oxazolidinones from CO, ethylene oxide, and anilines. High catalytic activity and ease of recovery from the reaction mixture using filtration and several reuse times without significant losses in performance are additional eco-friendly attributes of this catalytic system. The effects of the structure of ionic liquid on the catalytic performance were investigated and the various reaction conditions were optimized. This observation was exploited in the direct and selective chemical fixation of CO, affording high degrees of CO capture and conversion. Graphical Abstract: [ABSTRACT FROM AUTHOR]

Novel nano catalyst systems comprised of PbS nanoparticles immobilized into the nanospaces of ionic liquid (IL)-based KCC-1 (KCC-1/IL/PbS) have been described for the dehydrogenation of aqueous solutions of HCOOH/HCOONa to H 2 and CO 2 gas due to not only the unique dendritic fibrous morphology of the support, which made the active sites accessible, but also the synergistic effect between KCC-1/IL and the small PbS NPs. KCC-1 with high surface area was functionalized with ionic liquid (IL) acting as the robust anchors so that the nanoparticles were well-dispersed on the fibers of the KCC-1 microspheres, without aggregation. Because of the amplification effect of IL, high loading capacities of the nanocatalysts were achieved. The synthesized KCC-1/IL/PbS nanocatalyst exhibited excellent catalytic activity in dehydrogenation of aqueous solutions of HCOOH/HCOONa to H 2 and CO 2 under mild conditions to the easy accessibility of the active sites. [ABSTRACT FROM AUTHOR]

A new type of catalyst based on the ionic liquid (IL) modified fibrous nano-silica material KCC-1, with a high surface area, as the support and PbS nanoparticles (NPs) as the active sites (KCC-1/IL/PbS), has been successfully prepared through a facile and environmentally-friendly approach and characterized by Fourier transform infrared (FT-IR) spectroscopy, X-ray powder diffraction (XRD), transmission electron microscopy (TEM), and thermal gravimetric analysis (TGA). The synthesized catalyst exhibited high catalytic performance in the selective dehydrogenation of aqueous solutions of HCOOH/HCOONa to H 2 and CO 2 gas due to not only the unique dendritic fibrous morphology of the support, which made the active sites accessible, but also the synergistic effect between KCC-1/IL and the small PbS NPs. Additionally, KCC-1/IL/PbS had good recyclability, mainly attributed to the IL groups, which acted as robust anchors to avoid PbS NP leaching from the support. This synthetic method provides a green way to effectively prepare low cost PbS based catalysts and is promising for the development of other useful materials. [ABSTRACT FROM AUTHOR]

In this study, The HPG@KCC-1 NP was prepared through the ringopening polymerization of glycidol on the surface of KCC-1 to form HPG@KCC-1 and then HPG@KCC-1 NPs were functionalized using chlorodiphenylphosphine and phosphine-functionalized nanoparticles (HPG@KCC-1/PPh 2 ) as a recyclable phosphorus ligand was obtained. Also, gold (III) complex of HPG@KCC-1/PPh 2 ligand (HPG@KCC-1/PPh 2 /Au) was prepared which used for the cyclization of propargylic amines with CO 2 to provide 2-oxazolidinones. High catalytic activity and ease of recovery from the reaction mixture using filtration, and several reuse times without significant losses in performance are additional eco-friendly attributes of this catalytic system. [ABSTRACT FROM AUTHOR]

A novel gold(I)-containing ionic liquid-based KCC-1 catalyst was applied for the of propargylic amines with CO2 to provide 2-oxazolidinones. High and ease of recovery from the reaction mixture using an external magnet, and several recycle runs without significant loss in performance are additional eco-friendly attributes of this catalytic system. Copyright © 2016 John Wiley & Sons, Ltd. [ABSTRACT FROM AUTHOR]

In this study, a novel fibrous nano-silica (KCC-1) supported ionic liquid (KCC-1/IL) with high surface area and easy accessibility of active sites was successfully developed by a facile approach. The synthesized KCC-1/IL nanocatalyst exhibited excellent catalytic activity for the synthesis of quinazoline-2,4(1 H ,3 H )-diones from CO 2 and 2-aminobenzonitriles under mild conditions to the easy accessibility of the active sites. A high catalytic activity and ease of recovery from the reaction mixture by using filtration and several reuses without any significant loss in performance are additional eco-friendly attributes of this catalytic system. [ABSTRACT FROM AUTHOR]

An efficient and general method has been developed for synthesis of 1,3-thiazolidin-4-ones using magnetite nanoparticles immobilized Salen–Mn–ionic liquids as an efficient and recyclable catalyst. The inorganic, magnetic, solid base catalyst was characterized via N 2 sorption, TEM, VSM, TGA, XRD, FTIR, and UV–vis. Nanocatalyst can be easily recovered by a magnetic field and reused for subsequent reactions for at least 6 times with less deterioration in catalytic activity. [ABSTRACT FROM AUTHOR]

A magnetically ionic liquid (ILs) supported on FeNi 3 nanocatalyst was synthesized and evaluated as a recoverable catalyst for the synthesis of 1,3-thiazolidin-4-one. The main targets are solvent-free conditions, rapid (immediately) and easy immobilization technique, and low cost precursors for the preparation of highly active and stable MPs with high densities of functional groups. The inorganic, magnetic, solid base catalyst was characterized via Fourier transform infrared spectroscopy (FT-IR), X-ray diffraction (XRD), thermal gravimetric analysis (TGA), transmission electron microscopy (TEM) and vibrating sample magnetometer (VSM). The catalyst is active for the synthesis of 1,3-thiazolidin-4-ones and the products are isolated in high to excellent yields. Supporting this base catalyst on magnetic particles offers a simple and non-energy-intensive method for recovery and reuse of the catalyst by applying an external magnet. Isolated catalysts were reused for new rounds of reactions without significant loss of their catalytic activity. [ABSTRACT FROM AUTHOR]

A new Fe3O4 magnetic nanoparticles supported manganese salen complex was successfully prepared by attaching manganese acetates to a novel N, N′-bis(salicylidine)ethylenediamine ligand functionalized Fe3O4. The as-prepared catalyst was characterized by TGA, XRD, FTIR, VSM, and TEM. It was found to be an efficient catalyst for the synthesis of benzopyranopyrimidines in aqueous medium. High catalytic activity and ease of recovery from the reaction mixture using external magnet, and several reuse times without significant losses in performance are additional eco-friendly attributes of this catalytic system. [ABSTRACT FROM AUTHOR]

A new magnetically separable catalyst consisting of quinuclidin-3-thiol supported on propylsilane-functionalized silica-coated FeNi3 nanoparticles (FeNi3/quinuclidine) has been prepared. The synthesized catalyst was characterized by powder X-ray diffraction, transmission electron microscopy, vibrating sample magnetometry, thermogravimetric analysis, and Fourier transform infrared spectroscopy. The immobilized FeNi3/quinuclidine was shown to be an efficient heterogeneous catalyst for the synthesis of triazolo[1,2- a]indazole-triones under solvent-free conditions at room temperature. The catalyst is readily recovered by simple magnetic decantation and can be recycled several times with no significant loss of catalytic activity. [ABSTRACT FROM AUTHOR]

Highlights: [•] A methylene dipyridine based catalyst supported on Fe3O4 nanoparticles was synthesized. [•] It was used as a recyclable catalyst for the synthesis of pyrazolophthalazinyl spirooxindoles. [•] Pyrazolophthalazinyl spirooxindoles were obtained in good to high yields. [•] In this method, catalyst separation was easily performable by a magnetic bar. [ABSTRACT FROM AUTHOR]

The current study reports the synthesis of multi-site ionic liquids immobilized on DFNS (DFNS-IL) in an aqueous medium. Hence, the ruthenium nanoparticles (NPs) are well-dispersed over the DFNS-IL (DFNS-IL@Ru). Its catalytic function for hydroformylation of alkenes using CO2/H2 as a syngas surrogate is described here under mild conditions. Resultants with good to excellent performance were created employing DFNS-IL@Ru nanocatalyst. The structure of the catalyst was specified by a variety of techniques, including FT-IR, XRD, SEM, TGA, AFM, XPS, TEM, and EDX. The stability of the catalytic system was enhanced after releasing a large quantity of DFNS. The recycling state of the catalyst and the procedure of the coupling reactions were repeatedly investigated. [ABSTRACT FROM AUTHOR]

Here, first, the Nd2Sn2O7 NPs were greenly generated in the participation of gum of ferula assa-feotida of SnCl4.5H2O and Nd(NO3)3. The uncontrolled release of CO2 by industrial processes that acidify the oceans and warm the planet has prompted scientists to try different methods to capture CO2 directly from wastewater sources. Considering the morphology of Nd2Sn2O7 NPs, an appropriate exterior layer for CO2 imbibition was created in all catalyst sites. Findings disclosed that Nd2Sn2O7 NPs positively affected the fabrication yield of 3a,4-dihydronaphtho[2,3-c]furan-1(3H)-one through a three-factor coupling reaction of alkynes, allylic chlorides, and carbon dioxide. The technique enjoyed profitable performance and forbearance of functional groups. [ABSTRACT FROM AUTHOR]

Mesoporous metals have excellent surface area. These metals can be used to a variety of catalytic usage, particularly to reduce carbon dioxide in to value-added products. The present paper has utilized nanoparticles of fibrous CoMn2O4 that are proposed through a naive wet chemical reduction method as catalyst to carbon dioxide methanation. It is found that methane formation has highly efficient performance as well as selectivity because of their high porosity, high surface energy and controllable crystallinity as well as high number of atomic steps divisions. The nanocatalyst structure of fibrous CoMn2O4 istotally characterized by taking advantage of different techniques including scanning electron microscopy (SEM), powder X-ray diffraction (XRD), transmission electron microscopy (TEM) and a N2 adsorption/desorption. [ABSTRACT FROM AUTHOR]

• A new family of high surface area phosphosilicat nanosheet (FPS) with fibrous morphology was prepared. • [Ru(DMSO) 4 Cl 2 ] complex over triazole functionalized FPS. • FPS/Ligand/Ru was characterized and employed as photocatalytic for reduction of CO 2. • This system could be considered as perfect nanocatalyst by using the host–guest approach. In this work we report the design and synthesis of high-surface-area nanocatalysts by reaction between tripolyphosphate (TPP) and tetraethyl orthosilicate (TEOS) and then the complex ruthenium acetate anchored over the click modified ligand of fibrous phosphosilicate (FPS), forms a new highly efficient nano catalyst that shows excellent catalytic performance within CO 2 reduction to formate under visible-light irradiation. The FPS/Ligand/Ru nanocatalyst was thoroughly characterized by Fourier transform infrared spectra (FTIR), Powder X-ray diffraction (XRD), Field emission scanning electron microscopy (FESEM), Transmission electron microscopy (TEM), Energy dispersive X-ray spectroscopy (EDX), and N 2 adsorption/desorption study. [ABSTRACT FROM AUTHOR]

Herein, a 2D closely packed bicobalt complex supported by DFNS was first provided. The XPS and EDX pictures of the DFNS/(bicobalt complex) catalysts affirmed that bicobalt complex was well spread on the outer layer of DFNS. The CO2/propylene oxide coupling reactions, employing DFNS/(bicobalt complex) as catalysts were announced. In addition, the catalyst anatomical heterogeneity of DFNS/(bicobalt complex) was characterized by various techniques, including EDX, SEM, TGA, TEM, XPS, and FT-IR. No leaching of cobalt into the solution was observed. The catalytic power of our catalyst was compared with literature reported catalysts for the synthesis of cyclic carbonate. lower temperature, the minimum amount of catalyst, lower pressure of carbon dioxide and shorter reaction time were required for CO2 transformation, using DFNS/(bicobalt complex) NPs. Besides, hot filtration presented a throughout understanding of the catalyst's heterogeneous nature. The easy and applied reusability of the catalyst was observed after the completion of the reaction. [ABSTRACT FROM AUTHOR]

A green method for the preparation of triazoloindazoles by multicomponent reaction of dimedone, benzaldehydes, and phenylurazole using fibrous nanosilica (KCC-1) as catalyst is developed. [ABSTRACT FROM AUTHOR]

Abstract Inspired by the high accessibility and low diffusion limitations of fibrous silica nanoparticles (KCC‐1), fibrous phosphosilicate (FPS) was engineered using a microemulsion system. In this work, we report design and synthesis of high-surface-area FPS using tripolyphosphate (TPP) and tetraethyl orthosilicate (TEOS). The FPS nanocatalyst was thoroughly characterized by Fourier transform infrared spectra (FTIR), Powder X-ray diffraction (XRD), Field emission scanning electron microscopy (FESEM), Transmission electron microscopy (TEM), Energy dispersive X-ray spectroscopy (EDX), and N 2 adsorption/desorption study. Considering the large ionic internal character, high mechanical and thermal stability as well as long-term colloidal stability, this system could be considered as perfect nanocatalyst by using the host–guest approach. Then palladium nanoparticles (Pd NPs) supported on fibrous phosphosilicat to the cycloaddition of CO 2 to epoxides. Graphical abstract Image 1 Highlights • A new family of high surface area phosphosilicat nanosheet (FPS) with fibrous morphology was prepared. • Palladium nanoparticles (Pd NPs) supported on fibrous phosphosilicat. • FPS was characterized and employed as nanocatalyst to the cycloaddition of CO 2 to epoxides. • This system could be considered as perfect nanocatalyst by using the host–guest approach. [ABSTRACT FROM AUTHOR]

The new eco-friendly catalyst can be easily recovered by filtration and reused for several times without significant loss of activity. [ABSTRACT FROM AUTHOR]

The fibrous nano-silica supported heteropolyacid-based ionic liquid is simply and cost-effectively synthesized and exhibits high catalytic activity in the synthesis of cyclic carbonates (III) under mild and solvent-free conditions. [ABSTRACT FROM AUTHOR]

In this paper, we have produced carboxylic acids by the oxidation of various alcohols in the presence of CO2 using SBA-15/IL supported Cu(II) (SBA-15/IL/Cu(II)) as nanocatalyst. The obtained products showed to have excellent yields by taking into account of SBA-15/IL/Cu(II) nanocatalyst. In addition, the analysis of EDX, SEM, TGA, TEM, XPS, and FT-IR showed the heterogeneous structure of SBA-15/IL/Cu (II) catalyst. It is determined that, after using SBA-15 excess, the catalytic stability of the system was enhanced. Moreover, hot filtration provided a full vision in the heterogeneous catalyst nature. The recycling as well as reuse of the catalyst were studied in cases of coupling reactions many times. Moreover, we have studied the mechanism of the coupling reactions. [ABSTRACT FROM AUTHOR]

Herein, we report a chemoselective insertion of CO2 into unsaturated alkyne substrates under ambient conditions, which is achieved over poly (sulfobetain methacrylate) (p(SBMA)) supported Cu2O nanocatalyst (Cu2O/p(SBMA)) and a series of 3a,4-dihydronaphtho[2,3-c]furan-1(3H)-ones, can be obtained in excellent yields. Cu2O/p(SBMA) presents high performance for environment pressure activation and interpolation of CO2 into unsaturated alkyne substrates. This provides an attainable and competent catalyst for interpolation of CO2 into aryl alkynes, and binding allylic chlorides through SN2 mechanism in order to produce efficient ester and lactone heterocycles that are supposed to have favorable utilizations. All in all, these findings signify practical methods of hybrid catalyst development for detailed alterations, including CO2 employment in a green and sustainable manner. [ABSTRACT FROM AUTHOR]

Recently CO2 stabilization has received a great deal of attention because of its probable applications as a rich C1 resource and the synthesis of several fine chemicals can be accomplished through this stabilization. In this study, Sn(IV) doping dendritic fibrous nanosilica (SnD) supported PrVO4 nanoparticles as a catalyst (PrVO4/SnD) was synthesized by a in-situ procedure. The SnD with the ratios of Si/Sn in a variety of 6 to 40 were acquired through direct hydrothermal synthesis (DHS), and PrVO4 NPs on the surfaces of SnD were reduced in-situ. X-Ray diffraction (XRD), Scanning electron microscope (SEM), Fourier transform infrared spectroscopy (FT-IR), transmission electron microscopy (TEM), and X-ray energy dispersive spectroscopy (EDS) were deployed for identifying the PrVO4/SnD. It is potentially a highly dynamic catalyst in the stabilization of CO2 for the production of 2-oxazolidinones and benzimidazoles. In addition, the catalyst is very easy to recycle and reuse without significant loss of active site Cu metal. PrVO4/SnD NPs as a nanocatalyst for carbon dioxide fixation to synthesis benzimidazoles and 2-oxazolidinones. [ABSTRACT FROM AUTHOR]

Recently, the features of photocatalysts in terms of shape, controllable size and morphology have expanded with many catalysts. In this paper a new approach of fabricating active Nd2Sn2O7 photocatalysts have expanded bymodifying the catalyst support morphology. Deposition of sustainable solution phase Nd2Sn2O7 on silica protocol was expanded on complex as well as expensive atomic layer deposition method. Generally, catalytic activity reduces by enhance in solution of Nd2Sn2O7 loading on common mesoporous silica due to the loss of surface area because of blocking of pores. It is important to note that, for dendritic fibrous nanosilica (DFNS) as a support, due to its open fibrous morphology at different Nd2Sn2O7 loading, a large value of surface area can be remained intact. It enhanced the availability of active sites that enhanced the catalytic efficiency of Nd2Sn2O7/DFNS photocatalyst. In addition, its performance as a photocatalyst in the case of adsorption of metronidazole has been tested in a batch reactor. Metronidazole is known as an antibiotic commonly utilized in veterinary medicine as well as in process of human infection, and provides aquatic environments. Usual process has not had high influence on removal of metronidazole. Therefore, in the preset study, photocatalysis adsorption of metronidazole has been examined. [ABSTRACT FROM AUTHOR]

In this study, novel magnetic nanoparticle (FeNi3) based gold NPs with high surface area and easy accessibility of active sites were successfully developed by a facile approach. FeNi3 was functionalized with ionic gelation (IG) groups acting as robust anchors so that the gold NPs were well dispersed on the FeNi3 without aggregation. Spirulina coating was carried out via a wet impregnation technique based on IG using tripolyphosphate as a cross‐linking agent. Because of the amplification effect of IG, high loading capacities were achieved for the nanocatalysts. Furthermore, FeNi3/IG/Au showed superparamagnetic properties, contributing to the easy recovery of the nanocatalysts by magnetic separation. FeNi3/IG/Au was developed for the synthesis of pyrazolopyrimidines in mild conditions. The FeNi3/IG/Au magnetic NPs were thoroughly characterized using transmission electron microscopy, field emission scanning electron microscopy, vibrating sample magnetometry, Fourier‐transform infrared spectroscopy, and thermogravimetric analysis. The FeNi3/IG/Au nanocatalyst showed high robustness and stability in reaction for up to five cycles without significant loss of activity, probably due to the high loading of IG in the catalyst. [ABSTRACT FROM AUTHOR]

In the present research, a new dendritic fibrous nanosilica (DFNS) based nanocatalyst (DFNS/Dy2Ce2O7) that has high surface zone as well as easy availability of active zones has been properly expanded using an easy approach. DFNS that possess high surface zone is functionalized by amino groups working as the anchors such that the nanoparticles of Dy2Ce2O7 are fine-dispersed onto the DFNS microspheres fibres, without any aggregation. The nanoparticles of Dy2Ce2O7 are produced by a green approach in the attendance of gum of ferula assa-foetida of Dy(NO3)3 and (NH4)2Ce(NO3)6 as ceric and dysprosium sources. The structural evaluation of the samples proved the synthesis of Dy2Ce2O7 NPs. Moreover, a straight way for the production of 3-aryl-2-oxazolidinones by carbon dioxide, olefins, and anilines was obtained utilizing nano catalyst of DFNS/Dy2Ce2O7 in the lack of solvent. The reaction works properly at moderate states. This method that is cheap and simple may be used to different olefins that has proper to excellent 3-aryl-2-oxazolidinones productions. The catalyst may be simply recycled for ten times without considerable losing the activity of its catalytic. [ABSTRACT FROM AUTHOR]

TEMPO or Anchoring 2,2,6,6-tetra-methylpiperidine-1oxyl radical into the nanospaces a fibre of phosphosilicate with laccase compound causes an unheard potent to be producing which called bifunctional nanocatalyst (TEMPO@FPS-laccase). TEMPO@FPS-laccase indicated proper catalytic activity for synthesis of β-oxopropylcarbamates in aqueous medium without any pollutants through a multi component coupling of CO2, amines and propargyl alcohols in moderate condition. Free laccases may not be recovered but can be easily disabled in different environmental conditions. Enzyme immobilization is known as an expanding way to enhance resistor to extreme conditions and stability as well as recycled of laccase. [ABSTRACT FROM AUTHOR]

Abstract This study investigated the potential application of an efficient, easily recoverable, and reusable dendritic fibrous nanosilica (DFNS) magnetic nanoparticle catalyst, which supported cobaloxime complexes and corresponding to positively charged phosphonium linked cobaloximes (FeNi 3 /DFNS/Cobaloxime/PCPL MNPs) for catalytic reduction of 4-NP and 2-NA. FeNi 3 /DFNS/Cobaloxime/PCPL MNPs were thoroughly characterized by using TEM, FE-SEM, VSM, TGA, ICP-MS, and BET. Analysis of the recycled catalyst by ICP-MS showed only minor modifications in its morphology after the reaction and thus confirmed the strength of the catalyst. Graphical abstract Image 1 Highlights • The phosphonium linked cobaloximes attached onto the surface of FeNi 3 /DFNS. • FeNi 3 /DFNS/Cobaloxime/PCPL MNPs used for reduction of 4-NP and 2-NA of alkylphenols. • This system could be considered as perfect nanocatalyst by using the host–guest approach. [ABSTRACT FROM AUTHOR]

This study investigated the potential application of an efficient, easily recoverable, and reusable copper(II)-based catalyst bearing polyvinyl alcohol (PVA) immobilized on FeNi3/KCC-1/APTPOSS [FeNi3/KCC-1/APTPOSS/TCT/PVA/Cu(II)] magnetic nano-particles (MNPs) for the N-formylation of amines via CO2 hydrogenation. FeNi3/KCC-1/TCT/PVA/Cu(II) MNPs were thoroughly characterized by transmission electron microscopy, field emission-scanning electron microscopy, vibrating sample magnetometry, thermo-gravimetric analysis, inductively coupled plasma-mass spectrometry (ICP-MS), and the Brunauer, Emmett, and Teller method. After the reaction, only minor changes to the morphology of the catalyst recycled by the ICP-MS were evidenced, thus corroborating its robustness.Graphical Abstract: [ABSTRACT FROM AUTHOR]

KCC‐1/IL/Pd NPs can used as an excellent support for the synthesis of highly sparse homogeneous catalyst. KCC‐1 has high surface area that was functionalized with ionic liquid phase acting as the strong performers so that the Pd catalyst was well‐dispersed without aggregation on the framework of the KCC‐1/IL. This nano catalyst was specified by TGA, XRD, TEM, SEM, FT‐IR, and ICP. For reduction of 2‐nitroaniline and 4‐nitrophenol used from the KCC‐1/IL/Pd NPs as a green catalyst that showed excellent catalytic activities. Compared with the traditional substrate, KCC‐1 substantially increases protection and the accessibility of the nanoparticle sites due to its three dimensional hierarchical structure. [ABSTRACT FROM AUTHOR]

[Display omitted] • The catalyst is made of a multi-walled carbon nanotube, imidazole, and keplerate nanosized polyoxomolybdate [Mo 368 ]. • CNTs-Ionic liquid@Mo 368 for the sustainable production of biodiesel. • High catalytic activity and ease of recovery from the reaction mixture by filtration. An echo-friendly surface modification technique was utilized to produce a suitable solid ionic liquid catalyst. The generation of green heterogeneous nanocatalysts with the biochemical synthesis of sunflower oil and methanol through the chemical modification method has many fans. The catalyst is made of a multi-walled carbon nanotube, imidazole, and keplerate nanosized polyoxomolybdate [Mo 368 ] (CNTs-Ionic liquid@Mo 368). It was effectively employed as a nanocatalyst for the biodiesel synthesis of absolute methanol and sunflower oil. The highest yield of Fatty Acid Methyl Ester (FAME) was obtained under ideal situations of 1:30 oil/methanol molar ratio and stirring speed of 500–600 rpm for 4 h. In addition, the CNTs-Ionic liquid@Mo 368 was reused for ten runs and the FAME efficiency was more than 98% each time. Therefore, it can be said that this substance is potentially applicable for the economic and green synthesis of biodiesel from cheap feed stocks. The results demonstrated that metabolic procedures in anaerobic bacteria could be mixed with eco-friendly chemical technologies to generate effective catalytic reactions for utilization in stable organic synthesis. [ABSTRACT FROM AUTHOR]