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In this study, a novel Al-MOFs was hydrothermally synthesized using organic linker (benzene-1,3,5-tricarboxylic acid, i.e. trimesic acid) because of its thermal and chemical stability as well as the versatile capability of Aluminum (Al) to form multifaceted structures. The material was targeted for applications in supercapacitor, energy storage, sensing and biomedical sciences like Far-UVC device applications. The morphological structure and bandgap of the Benzene Tricarboxylic Acid (BTC)-Aluminum based MOFs samples underwent characterization using a range of techniques, such as X-ray Diffraction (XRD) analysis, Scanning Electron Microscopy (SEM), Energy Dispersive X-ray Spectroscopy (EDS), Raman spectroscopy, and UV–Vis spectroscopy. The XRD investigation confirmed the successful fabrication of MOF layered structure on Al-MOFs with an average crystallinity of 2.155 nm. SEM identified the hexagonal structure of Al-MOFs nanocrystals and showed strong agglomeration with a grain size of 186 nm. EDX analysis confirms the existence of aluminum peaks along with carbon peaks (as organic linkers), indicating the presence of organic linkers in the framework, which is the key component of MOF's porosity. The Raman spectroscopy results evidenced the synthesis of Al-MOFs structure. The optical bandgap was evaluated using UV–Vis spectrophotometry and estimated as E g = 5. 4 8 eV, indicating the materials stability for photovoltaic and some Far-UVC devices. Overall, the results suggest that the synthesized Al-MOFs nanomaterial is a promising candidate for various applications including Far-UVC device applications. [ABSTRACT FROM AUTHOR]

Novel nanocomposite MXene/CeCr2O4 had been synthesized by means of inexpensive co-precipitation method. This paper reports the smooth nanocomposite of MXene/CeCr2O4 by co-precipitation method and the sol–gel route used for spinel cerium chromite (CeCr2O 4) nanoparticles in which ethylene glycol chemical is exploited to restrain the accumulation of nanoparticles. The results show the formation of small nanoparticles with an average crystal crystalline size of CeCr2O4, MXene, MXene/CeCr2O4 nanocomposite is 37.9 nm, 18.4 nm, 11.15 nm, respectively. Characterizations, such as the X-ray diffraction (XRD), have demonstrated the amorphous nature of nanocomposite. The structural morphology [scanning electron microscopy (SEM)] shows the formation of nanocomposite with average particle size of nm of about 0.59 nm. Raman spectroscopy shows that chemical bonding, energy dispersive spectroscopy (EDS) and photoluminance spectroscopy were performed and 3.56 eV is band gap energy calculated from UV spectra. A comprehensive peak was noticed at 1425 cm − 1 because of bending and stretching oscillations of O–H groups and zeta potential value = − 19.1 mV. All of these results confirmed the successful formation of nanocomposite of MXene/CeCr2O4. The resulting MXene/CeCr2O4 nanocomposite structure shows evidence of significant characteristics as compared to single material having much potential for numerous applications such as optical, energy storing and conductive applications. A novel MXene/CeCr2O4 nanocomposite was synthesized using a co-precipitation method, resulting in the formation of small nanoparticles. Characterization techniques show the successful formation of the nanocomposite. The nanocomposite exhibited an amorphous nature, showed evidence of chemical bonding, and had a band gap energy of 3.56 eV. With its significant characteristics, the MXene/CeCr2O4 nanocomposite holds potential for various applications in optics, energy storage and conductivity. [ABSTRACT FROM AUTHOR]

Biofuel is a type of oil which is formed through anaerobic digestion process. It is frequently used as a transformation of biomasses into useful energy product. Thermal degradation is an effective technique for the characterization of waste cake for biofuel production. This research work was focused on the characterization of waste cake collected from oil refinery. The sample was analyzed for its calorific value, proximate value and elemental analysis. The results reflected that HHV of dry waste cake was higher (22.5MJ/kg) than wet waste cake (20.5MJkg) and commonly used sugar can bagasse (17.88MJ/kg). The percentage composition of carbon (49.8 percent, 40.8), hydrogen (7.9 percent, 6.0 percent), nitro gen (2.8 percent, 1.9 percent), sulphur (1.9 percent, 0.5 percent), and oxygen content (37.6 percent, 4 0.4 percent) were shown in the elemental analysis of dry waste cake versus moist cake. When it come s to the thermal degradation behaviour of dry and wet cake in TGA, wet cake has greater moisture co ntents (68.50 percent) than dry cake (40.1 percent). Wet cake has a low volatile matter (30.9%) and a high volatile matter (30.9%). (14.3 percent). Simila rly, the percentage of ash in dry cake (17.3 percent) increases while it decreases in moist cake (5.11 p ercent). In contrast to the foregoing, the percent fraction of carbon in wet cake increased (12.09%) w hereas it decreased in dry cake (11.7 percent). [ABSTRACT FROM AUTHOR]

MXene/Ag2CrO4 nanocomposite was synthesized effectively by means of superficial low-cost co-precipitation technique in order to inspect its capacitive storage potential for supercapacitors. MXene was etched from MAX powder and Ag2CrO4 spinel was synthesized by an easy sol-gel scheme. X-Ray diffraction (XRD) revealed an addition in inter-planar spacing from 4.7 Å to 6.2 Å while Ag2CrO4 nanoparticles diffused in form of clusters over MXene layers that had been explored by scanning electron microscopy (SEM). Energy dispersive X-Ray (EDX) demonstrated the elemental analysis. Raman spectroscopy opens the gap between bonding structure of as-synthesized nanocomposite. From photoluminence (PL) spectra the energy band gap value 3.86 eV was estimated. Electrode properties were characterized by applying electrochemical observations such as cyclic voltammetry along with electrochemical impedance spectroscopy (EIS) for understanding redox mechanism and electron transfer rate constant Kapp. Additionally, this novel work will be an assessment to analyze the capacitive behavior of electrode in different electrolytes such as in acidic of 0.1 M H2SO4 has specific capacitance Csp = 525 F/g at 10 mVs−1 and much low value in basic of 1 M KOH electrolyte. This paper reflects the novel synthesis and applications of MXene/Ag2CrO4 nanocomposite electrode fabrication in energy storage devices such as supercapacitors. [ABSTRACT FROM AUTHOR]

A ternary oxide nanocomposite based on Bi 2 O 3 /MgO/GO was prepared using a co-precipitation method for photoconductive device applications. The structure and morphology of the as-prepared nanocomposite were characterized analytically using X-ray diffraction (XRD), scanning electron microscopy (SEM), electron dispersive spectroscopy (EDS) techniques, and optical characterization was made using Fourier-transform infrared (FTIR) spectroscopy, photoluminescence (PL), and UV-vis spectroscopy techniques. The heterostructure of the crystal with a crystallite size of 28.064 nm and the purity of the phase are depicted by XRD patterns. Scanning electron microscopy revealed its morphology showing an average grain size of 0.27 μm, and the purity of the nanocomposite was confirmed by EDS, which showed the presence of Mg, Bi, C, and O. The band gap of the Bi 2 O 3 /MgO/GO nanocomposite was 4.02 eV by PL comparable with 5.718 eV by UV-vis spectroscopy, which evidenced that the material may have potential applications in far UVC emissive devices. The zeta potential observed was 48.0 mV, indicating the stability of the ternary nanocomposite., Competing Interests: There is no conflict of interest., (This journal is © The Royal Society of Chemistry.)