CERAMICS INTERNATIONAL
·
2020
·
IF 3.83
Yanan Gao,Juncheng Liu,Beiping Dong
Dust on outdoor glass will significantly reduce glass transmittance in various applications and even damage solar cell panels. Here, the effects of Sb doping on the structure and photoelectric properties of a Sb-doped SnO 2 –SiO 2 (ATO-SiO 2 ) film prepared on a glass substrate with a sol-gel method and the dust removal performance of the resulting film were studied. The results show that the Sb-doped SnO 2 –SiO 2 film consists of a SnO 2 tetragonal rutile phase, but the doped Sb decreases the sample crystallinity. With an increase in the Sb doping concentration, two lattice parameters of the ATO-SiO 2 film, a and c , show “M"-shaped changes. The nanoparticle size first decreases and subsequently increases when the Sb doping concentration is over 6 mol%. The transmittance of the substrate glass coated with this film in the visible wavelength range (380–780 nm) decreases from 86.3% to 82.7%. The square resistance first decreases and subsequently increases, while the dust removal performance first increases and subsequently decreases. At a 12 mol% Sb doping concentration, the square resistance is minimal (4.64 × 10 6 Ω/□). The maximal dust removal performance is 64%.
研究领域:
材料科学
·
光学工程
✓ 已验证
DOI
高影响因子
JOURNAL OF INDUSTRIAL AND ENGINEERING CHEMISTRY
·
2015
·
IF 3.512
Na Cao,Xin Xie,Yu Zhang,Yanbao Zhao,Liuqin Cao,Lei Sun
Dendritic porous tin oxide/silica (DTS) nanospheres (NSs) were prepared by emulsion-condensation route. DTS NSs have an average diameter of 80 nm and possess accessible center-radial large pore channels, which endow them high surface area, less drug diffusion resistance and more mass transport. SnO 2 quantum dots (QDs) embedded in silica skeleton can be used to track the drug release behavior. DTS NSs were coated by chitosan/polymethacrylic acid and polymer shell would make them achieve great loading capacity and pH-sensitive release for aminomethylbenzoic acid (AMBA).
研究领域:
材料科学
·
药学
✓ 已验证
产品关联
DOI
高影响因子
OPTIK
·
2021
·
IF 2.443
Beiping Dong,Yanan Gao,Juncheng Liu
High transmittance and strong dust-removing film has a broad potential application prospect in architectural glass, solar photovoltaic glass, automotive glass, etc. In this paper, SnO 2 is used as the antistatic agent, and SiO 2 as the matrix. The effects of Sn/Si molar ratio on the structure and properties of the SnO 2 -SiO 2 film prepared on quartz glass substrate with sol-gel dipping were studied. The film was analyzed by X-ray diffractometer (XRD), Fourier transform infrared (FTIR) spectroscopy and Scanning electron microscopy (SEM). Ultraviolet-Visible-Near Infrared Spectrometer (UV–VIS–NIR) and Hall effect instrument tested the photoelectric properties. Falling dust experiment was used to determine the film’s dust-removing property. The results show that the SnO 2 -SiO 2 film is composed of nano particles of SnO 2 tetragonal rutile phase and amorphous SiO 2 , and has antistatic dust-removing property. With the increase of Sn/Si molar ratio, the crystallization quality and average grain size of the film increases, while the square resistance decreases continuously. The visible transmittance fluctuates with an amplitude of no more than 1.2%, and obtained the minimum value 87.246% at Sn/Si molar ratio of 2:1. Moreover, the film’s dust-removing performance improves continuously, which obtained the best, 50%, at Sn/Si molar ratio of 2:1.
研究领域:
材料科学
·
光学工程
·
表面科学
✓ 已验证
产品关联
DOI
高影响因子
NEW JOURNAL OF CHEMISTRY
·
2021
·Vol. 45
·期 35
·15901-15911
·
IF 3.591
Xiao-yi Liu,Xiu-ping Li,Rong-xiang Zhao,Hao Zhang
Silica gel containing SnCl2-based deep eutectic solvents (DESs) were synthesized by a sol–gel method using SnCl2-based DESs as the loading component. The n%-SnO2/SiO2 (n = 2, 4, 6) supported catalyst was obtained by calcination of silica gel containing SnCl2-based DESs at high temperature. n%-SnO2/SiO2 was characterized by Fourier transform infrared spectroscopy (FT-IR), X-ray diffraction (XRD), scanning electron microscopy (SEM), N2 adsorption–desorption and X-ray photoelectron spectroscopy (XPS). A catalytic oxidation desulfurization system with 4%-SnO2/SiO2 as the catalyst and H2O2 as the oxidant was applied to remove organic sulfide in model oil. Compared with the traditional impregnation method, the catalyst synthesized using the sol–gel method showed higher oxidative desulfurization activity. The effects of various factors including loading dose of SnO2, temperature, O/S molar ratio, catalyst dosage, and different sulfides on the desulfurization rate were investigated. The experimental results indicate that the desulfurization rate of dibenzothiophene (DBT), 4,6-dimethyldibenzothiophene (4,6-DMDBT) and benzothiophene (BT) can reach 99.5%, 81.6% and 22.4%, respectively, under the optimal reaction conditions. The desulfurization activity of 4%-SnO2/SiO2 is above 90% after recycling 5 times.
研究领域:
化学工程
·
材料科学
·
环境科学
✓ 已验证
产品关联
DOI
高影响因子
INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH
·
2025
·
IF 3.9
Bin Chen,Jun Hu,Zhihao Yu,Lin Zhu,Chunzheng Wu,Hongbo Yu
Improving catalytic hydrogenation by modifying noble metal catalysts with metal-oxide promoters is promising, but precisely controlling the metal–promoter interface to optimize performance is still challenging. In this study, we created Ir-SnO2/SiO2 nanocatalysts with different Ir/Sn ratios using IrSn alloy precursors through careful calcination and reduction treatments. The SnO2-promoted catalysts showed much better conversion and selectivity than the original Ir/SiO2 catalyst toward the hydrogenation of acetophenone to phenylethanol. The Ir-SnO2/SiO2 catalyst with an Ir/Sn molar ratio of 5/1 (i.e., sample Ir5-(SnO2)1/SiO2) performed the best, achieving a 94% conversion rate and 99% selectivity. Our study found that SnO2 promoters could reduce the surface electron density of the Ir nanoparticles (NPs), enhancing the adsorption of reactants; meanwhile, the new Ir-SnO2 interface is more active for the dissociation of hydrogen compared to Ir alone. The optimal Ir5-(SnO2)1/SiO2 catalyst has demonstrated versatility by effectively catalyzing the hydrogenation of C═O bonds in a wide range of compounds, showing significant potential for various industrial applications in fine chemical synthesis and energy conversion.
研究领域:
催化化学
·
材料科学
·
工业化学
✓ 已验证
产品关联
DOI
高影响因子
COMBUSTION SCIENCE AND TECHNOLOGY
·
2025
·
IF 1.5
Baichen Chen,Yi Wang,Jianchen He,Xiaolan Song,Chongwei An
This article uses a combination of experimental and simulation methods for mutual verification to explore the possibility of nano aluminum thermite damaging chips and disrupting circuit systems. In terms of experiments, Fe2O3/SiO2/Al and SnO2/SiO2/Al aluminum thermites were prepared by physically mixing micro Al powder, nano SiO2, and nano metal oxide powder in a certain proportion. The binder was added and pressed into a charge column for ignition testing. The prepared aluminum thermite was characterized and its performance was tested using X-ray diffraction (XRD), scanning electron microscopy (SEM), energy dispersive spectroscopy (EDS), X-ray photoelectron spectroscopy(XPS), and constant pressure combustion experiments.In terms of molecular dynamics simulation, Materials Studio software was used to investigate the interaction relationships between atoms in the aluminum thermite. The reaction process and properties of the aluminum thermite under adiabatic conditions at different initial temperatures were explored from the perspectives of potential energy, radial distribution function, mean square displacement, and self diffusion coefficient. The simulation results were compared with experimental reaction phenomena. The results show that the aluminum thermite prepared by physical method is uniformly mixed, various materials are fully adhered, well dispersed, and there is no agglomeration phenomenon. In terms of combustion performance, the overall performance of Fe2O3/SiO2/Al thermite is better than that of SnO2/SiO2/Al thermite, with higher combustion efficiency, higher reaction temperature, and the ability to maintain high temperature for a longer period of time. The combustion of Fe2O3/SiO2/Al aluminum thermite is more complete, and the reaction generates more elemental Si, which plays a positive role in the damage of chips. In terms of molecular dynamics simulation, the aluminum thermal reaction of Fe2O3/SiO2/Al at different initial temperatures is more stable, with a faster energy release rate and a higher total energy content than SnO2/SiO2/Al. The aluminum thermal reaction generates oxides of elemental Fe/Sn, Si, and Al. Overall, the diffusion coefficients of both aluminum thermites increase with the increase of initial temperature, and the intensity of the reaction also increases with the increase of initial temperature. Temperature has an accelerating effect on their diffusion, and SnO2/SiO2/Al has stronger diffusion ability than Fe2O3/SiO2/Al. The Fe2O3/SiO2/Al aluminum thermite has a better damage effect on chips, and the simulation and experimental results are consistent.
研究领域:
材料科学
·
计算化学
·
工程学
✓ 已验证
产品关联
DOI
高影响因子
危险品化学品经营许可证（带存储）