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The material of CuS/polyvinyl alcohol-chitosan (CuS/PVACS) was prepared with a novel synthesis analysis. The crystallinity, morphological characteristics, and photocatalytic performance of the nano-materials were investigated by X-ray diffraction, field emission scanning electron microscopy X-ray photoelectron, and UV–vis spectrophotometry. The band gap values (Eg) was found as 2.50, and 2.04 eV for CuS, and CuS/PVACS nano-catalyst, respectively. The photo-degradation amount of the malachite green solutions which were degraded by CuS/PVACS in the UV-irradiation in 60 min was above 96.51%. The antibacterial properties of the CuS/PVACS has been evaluated versus (G+/G-) bacteria. The results of antibacterial performance indicated that CuS/PVACS nanocomposites have bacteriostatic behavior versus Escherichia coli , Pseudomonas syringae , Staphylococcus aureus and Streptococcus pneumoniae. [ABSTRACT FROM AUTHOR]

The application of nano materials for removal and detection of hazardous metal detection with nanoparticles is important for researcher. In this paper, the silver-manganese disulfide/chitosan-polyvinyl alcohol (Ag-MnS 2 /CSPVA) nanocomposites was prepared for the detection of toxic heavy metal. The synthesized nano materials was experimented through the various analysis methods to structural and morphological evaluation. The surface charge of the Ag-MnS 2 /CSPVA was −25.0 ± 0.1 mV. The various metal ions have not effect on detection of mercury (II). The result shows the excellent linearity was found the mercury concentrations changing with limit of detection of 9.0 nM (nano molar level). The condition of detection was conducted at pH 5 and room temperature. Moreover, the photocatalytic properties of the Ag-MnS 2 /CSPVA nanocomposites was analyzed for degradation of malachite green under visible light irradiation. The complete malachite green degradation reached up to 97.29% after 30 min of photocatalytic reaction. The antibacterial efficiency was studied versus both Escherichia coli and Staphylococcus aureus bacteria. The outcome depicts that the Ag-MnS 2 /CSPVA nanocomposites has an excellent property in antibacterial activity. [ABSTRACT FROM AUTHOR]

MnS 2 , MnS 2 /Chitosan‑sodium Alginate (MnS 2 /CS-NaAlg) and MnS 2 /Chitosan-Calcium Alginate (MnS 2 /CS-CaAlg) nanocomposites were prepared via the chemical procedure. The characterization was performed by various instruments such as energy dispersive X-ray spectrometer (EDX), scanning electron microscopy (SEM), X-ray diffraction (XRD) elemental map analysis, Fourier transform infrared spectrometry (FT-IR), Brunauer–Emmett–Teller (BET) surface area measurements, UV–Vis absorption spectra and X-ray absorption spectroscopy. The mean crystallite sizes of MnS 2 , MnS 2 /CS-NaAlg and MnS 2 /CS-CaAlg are 60.12, 71.25 and 74.54 nm, respectively. From Kubelka–Munk equation, the energy band gaps of MnS 2 , MnS 2 /CS-NaAlg and MnS 2 /CS-CaAlg are estimated to be 2.83, 2.71 and 2.41 eV, respectively. The investigation of photocatalysis properties was performed by degradation of tramadol under UV light illumination. The optimum of experimental variables such as pH and time on photo-degradation were found 3 and 60 min, respectively. The results show that the efficiency photocatalysis of MnS 2 /CS-NaAlg and MnS 2 /CS-CaAlg nanocomposites under was higher than MnS 2 . The antibacterial and fungicidal property of MnS 2 /CS-NaAlg and MnS 2 /CS-CaAlg nanocomposites was investigated and demonstrates good efficiency in antimicrobial efficiency compared to MnS 2 . The MnS 2 , MnS 2 /CS-NaAlg and MnS 2 /CS-CaAlg have been shown excellent mechanical and antioxidant properties. [ABSTRACT FROM AUTHOR]

Recently, photo-degradation process under ultraviolet-light irradiation is being used as a substantial treatment method for the removal of environmental pollution. In this study, a silver phosphate-ilmenite (Ag 3 PO 4 -FeTiO 3) hetero structure supported on glycol chitosan catalyst was completely prepared, also, and its structural, and optical properties were characterized. Meantime, scanning electron microscopy, X-ray diffraction, X-ray photoelectron, and UV–vis spectra were applied. The Ag 3 PO 4 -FeTiO 3 /glycol chitosan catalyst was used to degrade metronidazole under visible-light irradiation. The degradation rate of metronidazole in 25 min by Ag 3 PO 4 -FeTiO 3 /glycol chitosan nanocomposites was found to be 99.2% under UV light irradiation, which was higher than that by Ag 3 PO 4 -FeTiO 3 (72.24%) and FeTiO 3 (35.5%), respectively. The active species trapping test of Ag 3 PO 4 -FeTiO 3 /glycol chitosan indicated that ·OH and ·O 2 − participated during the reaction. The diffusion method was evaluated to appraise the bactericidal activity of the synthesized nanomaterials when tested against both Staphylococcus aureus and Escherichia coli bacteria, with or without LED-light irradiation. The antibacterial tests show higher inhibition zones under light illumination as compared to dark conditions. The antifungal properties of the prepared nanomaterials were analyzed by fungi (Aspergillus niger , and Fusarium solani) using disc diffusion analysis. It was confirmed that the prepared nanomaterials have the best antifungal agent as compared to the standard antibiotics. When the Ag 3 PO 4 -FeTiO 3 /glycol chitosan was used, the amount of inhibition zone was enhanced. [ABSTRACT FROM AUTHOR]

A novel AgO-CoO-CdO/Poly(alanine)-chitosan-reduced graphene oxide (PACSGO) nanocomposite was developed to study the degradation efficiency under visible light irradiation. The AgO, CoO, CdO nanoparticles and AgO-CoO-CdO heterometal oxides were prepared by using the chemical method. The crystallite structure and phase studies were studied by the X-ray diffraction assay. The SEM images were evaluated to explore the morphology of the prepared materials. EDS analysis and FTIR spectra confirmed the formation of nano-materials with high purity. The optical bandgap values were measured via Kubelka-Munk plot showing that the metal oxides produced a new energy state in the electronic level for high photocatalysis efficiency. The incorporation of AgO-CoO-CdO in PACSGO showed a novel nano-photocatalyst for substantial degradation of dye in low process time. The catalysis data displayed that PACSGO based AgO-CoO-CdO nanocomposites ensured a strong potential to degradation of organic dye compounds from water in during photocatalysis reaction. The beneficial anti-pathogenic bacterial performance of the AgO-CoO-CdO/PACSGO nanocomposites was further demonstrated by a substantial reduction in the amount of Staphylococcus aureus , Escherichia coli , Pseudomonas aeruginosa, and B. cereus medium and increase in inhibition zone value with the addition of the AgO-CoO-CdO/PACSGO nanocomposites. [ABSTRACT FROM AUTHOR]

In this work, we present Co 3 S 4 -SnO 2 supported polyvinylpyrrolidone-cellulose (PVPCS) nano-structure for Lidocaine degradation. The nanostructure was characterized by various techniques i.e. morphological and optical ones. The results have demonstrated that Co 3 S 4 -SnO 2 nanocomposites were evenly supported on the PVPCS. Moreover, the photocatalysis performances of the catalysts were investigated under ultra-violet (UV) light irradiation. The nano-structure Co 3 S 4 -SnO 2 /PVPCS composite (98.72%) revealed the highest photocatalysis performance as compared to SnO 2 nanoparticles, and Co 3 S 4 -SnO 2 nanocomposites. The photo-stability of nano-structure Co 3 S 4 -SnO 2 /PVPCS composite was characterized using cyclic catalytic experimental. Results demonstrated a substantially stable performance of the nano-structure Co 3 S 4 -SnO 2 /PVPCS composite. The biological properties of Co 3 S 4 -SnO 2 /PVPCS composite were investigated through the antibacterial (versus Staphylococcus aureus , and Escherichia coli) and antifungal studies (Candida albicans). As the results declared, Co 3 S 4 -SnO 2 nanocomposites have substantial biological properties as compared to SnO 2 nanoparticles, and Co 3 S 4 -SnO 2 nanocomposites. • The Co 3 S 4 -SnO 2 /PVPCS composites were prepared by facile method. • The photocatalysis efficiency of Co 3 S 4 -SnO 2 /PVPCS was studied for degradation of Lidocaine. • The Co 3 S 4 -SnO 2 /PVPCS composites revealed the highest photocatalysis efficiency. • The Co 3 S 4 -SnO 2 /PVPCS composites has great antimicrobial properties [ABSTRACT FROM AUTHOR]