| Title: | Electrochemical oxidation of gaseous benzene on a Sb-SnO(2)/foam Ti nano-coating electrode in all-solid cell |
| Author(s): | Zhang B; Chen M; Zhang C; He H; |
| Address: | "State Key Joint Laboratory of Environment Simulation and Pollution Control, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China. State Key Joint Laboratory of Environment Simulation and Pollution Control, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China; University of Chinese Academy of Sciences, Beijing 100049, China. Electronic address: cbzhang@rcees.ac.cn. State Key Joint Laboratory of Environment Simulation and Pollution Control, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China; University of Chinese Academy of Sciences, Beijing 100049, China; Center for Excellence in Regional Atmospheric Environment, Institute of Urban Environment, Chinese Academy of Sciences, Xiamen 361021, China" |
| DOI: | 10.1016/j.chemosphere.2018.10.222 |
| ISSN/ISBN: | 1879-1298 (Electronic) 0045-6535 (Linking) |
| Abstract: | "An all-solid cell with a solid polymer electrolyte was applied to electrochemical oxidation of low-concentration indoor gaseous aromatic pollution. Antimony-doped tin dioxide nanocoatings deposited on a titanium foam substrate (Ti/Sb-SnO(2)) with different Sb/Sn ratios (4.8-14.0?ª+mol%) and loading weight of Sb-SnO(2) (4.4-7.7?ª+mg cm(-)(2)) were used as dimensionally stable anodes. Sn and Sb were homogeneously dispersed on the substrate, and a crack-free nanocoating was built when the loading of nanocoating was increased to 6.3?ª+mg cm(-2). The activity tests for oxidation of benzene showed that 40?ª+ppm gaseous benzene was converted to CO(2) with high selectivity (85%) at the low cell voltage of 2.0?ª+V in this all-solid cell. The conversion of benzene was greatly increased from 30% to 100% upon increasing the Sb/Sn ratio of the nanocoating from 4.7?ª+mol% to 14.0?ª+mol%. With the increase of nanocoating loading (Sb/Sn?ª+=?ª+14.0?ª+mol%) from 6.3 to 7.7?ª+mg cm(-)(2), the conversion of 100?ª+ppm benzene was increased from 70% to 100%. Cyclic voltammetry revealed that high Sb content in the oxide nanocoating increased the overpotential and current intensity of the oxygen evolution reaction. The large outer charge q(o)( *) related to the electroactive surface of the SS-7.7/Ti3 electrode was up to 305.3?ª+mC?ª+cm(-2), which were responsible for its excellent electrochemical performance in the benzene oxidation process. Our studies provide a potential method for removal of indoor VOCs at ambient temperature" |
| Keywords: | Antimony/*chemistry Benzene/*chemistry Electrochemical Techniques/*methods Electrodes Gases Oxidation-Reduction Tin Compounds/*chemistry Titanium/*chemistry Benzene Electrochemical oxidation Indoor air pollution Volatile organic compounds; |
| Notes: | "MedlineZhang, Bo Chen, Min Zhang, Changbin He, Hong eng England 2018/11/20 Chemosphere. 2019 Feb; 217:780-789. doi: 10.1016/j.chemosphere.2018.10.222. Epub 2018 Nov 10" |
