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Electrolytic Recovery of Aluminum from 1-Butyl-3-methylimidazolium Bis(trifluoromethanesulfonyl)imide Ionic Liquid Containing AlCl3
No full textElectrolytic recovery of pure aluminum is a conventional method for the recycling of waste aluminum alloys, which is very important to economic development and environmental protection. However, the conventional electrolytic recovery process suffers from several inherent problems, which restricts the further development of this technology. In this study, an air- and moisture-stable 1-butyl-3-methylimidazolium bis(trifluoromethanesulfonyl)imide ionic liquid was applied in the dissolution of aluminum chloride. The upper phase of the resulting mixture was used as a low-temperature electrolyte in the electrolytic recovery of pure aluminum. The results of cyclic voltammetry and linear sweep voltammetry showed that aluminum could be electrodeposited from the electrolyte and that the main impurity elements of the aluminum alloy could also be stripped off by the electrolytic method. Based on these measurements, the electrolytic recovery process was conducted at 0.2-0.6 V and 303.2-373.2 K. Scanning electron microscope micrographs showed that smooth, compact and well-adherent deposits were obtained at 0.4 V from 303.2 to 323.2 K. In this situation, the preferred crystallographic orientation of these deposits was the (200) plane. Meanwhile, the mass content of aluminum in all deposits was higher than 99.6% according to the purity characterization. This study may be useful for the further application of ionic liquids in the low-temperature recycling of waste aluminum alloys
Hollow Microscale and Nanoscale Structures as Anode Materials for Lithium-Ion Batteries
No full textIn the past decade, the synthesis and application of hollow multishell micro/nanostructures have experienced substantial developments. Hollow micro-and nanostructures demonstrate a promising future in energy storage. However, hollow micro/nanostructures as anode electrodes for lithium-ion batteries (LIBs) have not been systematically summarized. In this paper, the challenges faced by lithium anode materials are reviewed. Then, the application of hollow micro/nanostructures as lithium anode electrodes is reviewed in terms of the charging and discharging mechanisms of multishell hollow anode electrodes. Eventually, the prospects for the development of multishell hollow micro/nanostructures as lithium anode electrodes are further discussed
Synthesis of photoactive Polyoxometalate-porphyrin hybrids to trigger the photocurrent by designing the ultra-thin films
No full textIn this work, two new, efficient, and ecofriendly hybrids based on Polyoxometalates-porphyrin namely CuAnPOM@3PhP, and LPOM@3PhP have been synthesized and characterized through FT-IR, UV-Visible, Elemental analysis, fluorescence studies, 1HNMR, and cyclic voltametric analysis to utilize its use in the light conversion devices by designing their thin films based on titanium dioxide. The titanium dioxide based thin films of CuAnPOM@3PhP, and LPOM@3PhP have been designed by using dr. Blade method. Based on Swanepoel's envelops method different optical parameters of CuAnPOM@3PhP, and LPOM@3PhP thin films has been investigated by using their transmission spectra at room temperature. The electrical conductivity of LPOM@3PhP (2.2 x 10(3) to 4.6 x 10(3) S/m) is found to be higher than that CuAnPOM@3PhP (2.0 x 10(1) 4.2 x 10(1) S/m). This more enhancement in electrical conductivity of LPOM@3PhP is attributed to its more fluorescence quenching (more photoinduced transfer of electrons from porphyrin moiety to L-POM), and low band gap energy. However, the dielectric loss is found to be less in both of CuAnPOM@3PhP, and LPOM@3PhP ultra-thin films that points its remarkable use in opto-electronic devices. The photocurrent generation has been studied by using two-probe multimeter. During measurement of photocurrent generation, it has been analyzed that LPOM@3PhP show more energy losses as compared to CuAnPOM@3PhP. However, during photocurrent generation the persistent of negative photoconductivity in ultra-thin films of CuAnPOM@3PhP, and LPOM@3PhP make them an excellent candidate to be utilized in optoelectronic devices such as solar cell, and photovoltaic cell etc
Synthesis of photoactive Polyoxometalate-porphyrin hybrids to trigger the photocurrent by designing the ultra-thin films
No full textIn this work, two new, efficient, and ecofriendly hybrids based on Polyoxometalates-porphyrin namely CuAnPOM@3PhP, and LPOM@3PhP have been synthesized and characterized through FT-IR, UV-Visible, Elemental analysis, fluorescence studies, 1HNMR, and cyclic voltametric analysis to utilize its use in the light conversion devices by designing their thin films based on titanium dioxide. The titanium dioxide based thin films of CuAnPOM@3PhP, and LPOM@3PhP have been designed by using dr. Blade method. Based on Swanepoel's envelops method different optical parameters of CuAnPOM@3PhP, and LPOM@3PhP thin films has been investigated by using their transmission spectra at room temperature. The electrical conductivity of LPOM@3PhP (2.2 x 10(3) to 4.6 x 10(3) S/m) is found to be higher than that CuAnPOM@3PhP (2.0 x 10(1) 4.2 x 10(1) S/m). This more enhancement in electrical conductivity of LPOM@3PhP is attributed to its more fluorescence quenching (more photoinduced transfer of electrons from porphyrin moiety to L-POM), and low band gap energy. However, the dielectric loss is found to be less in both of CuAnPOM@3PhP, and LPOM@3PhP ultra-thin films that points its remarkable use in opto-electronic devices. The photocurrent generation has been studied by using two-probe multimeter. During measurement of photocurrent generation, it has been analyzed that LPOM@3PhP show more energy losses as compared to CuAnPOM@3PhP. However, during photocurrent generation the persistent of negative photoconductivity in ultra-thin films of CuAnPOM@3PhP, and LPOM@3PhP make them an excellent candidate to be utilized in optoelectronic devices such as solar cell, and photovoltaic cell etc
Aloe Vera-Fermented Beverage Ameliorates Obesity and Gut Dysbiosis in High-Fat-Diet Mice
No full textAloe vera has been proven to have various medicinal properties, including anti-inflammatory and anti-obesity functions. However, the effects of Aloe vera-fermented beverages (AFB) on obesity and its complications are still not clear. In this study, HepG2 cells in high-fat environment and high-fat diet (HFD) mice were used to investigate the potential obesity-preventing function of AFB. We found that AFB intervention decreased the amount of lipid droplets of HepG2 cells, suppressed the body weight gain and adipose accumulation, and reduced the serum contents of total cholesterol (TC), alanine aminotransferase (ALT), and interleukin 10 (IL-10) of HFD-mice. In addition, it also changed the composition of the gut microbiota. The ratio of Firmicutes/Bacteroidetes was decreased, while the relative abundance of Muribaculaceae, Alistipes and Rikenellaceae RC9_gut_group was increased after the administration of AFB compared with HFD-mice. These results demonstrated that AFB can prevent diet-induced obesity (DIO) and provides a new option to modulate obesity-related gut dysbiosis
Green and selective hydrogenation of aromatic diamines over the nanosheet Ru/g-C3N4-H-2 catalyst prepared by ultrasonic assisted impregnation-deposition method
No full textIn this study, nanosheet g-C3N4-H-2 was prepared by thermal exfoliation of bulk g-C3N4 under hydrogen. A series of Ru/g-C3N4-H-2 catalysts with Ru species supported on the nanosheet g-C3N4-H-2 were synthesized via ultrasonic assisted impregnation-deposition method. Ultrafine Ru nanoparticles ( 99% 4,4'-diaminodicyclohexylmethane selectivity, corresponding to a reaction activity of 35.7 molMDA molRu(-1) h(-1). Moreover, the reaction activity of catalyst in the fifth run was 36.5 molMDA mol(Ru)(-1) h(-1), which was comparable with that of the fresh one. The computational results showed that g-C3N4 as support was favorable for adsorption and dissociation of H-2 molecules. Moreover, the substrate scope can be successfully expanded to a variety of other aromatic diamines. Therefore, this work provides an efficient and green catalyst system for selective hydrogenation of aromatic diamines. (c) 2021 Institute of Process Engineering, Chinese Academy of Sciences. Publishing services by Elsevier B.V. on behalf of KeAi Communications Co., Ltd
