文献类型：期刊文献

英文题名：Au/carbon as Fenton-like catalysts for the oxidative degradation of bisphenol A

作者：Yang, Xuejing[1];Tian, Peng-Fei[1];Zhang, Chengxi[2];Deng, Ya-qing[1];Xu, Jing[1];Gong, Jinglong[2];Han, Yi-Fan[1]

机构：[1]E China Univ Sci & Technol, State Key Lab Chem Engn, Shanghai 200237, Peoples R China;[2]Tianjin Univ, Sch Chem Engn & Technol, Minist Educ, Key Lab Green Chem Technol, Tianjin 300072, Peoples R China

年份：2013

卷号：134

起止页码：145

外文期刊名：APPLIED CATALYSIS B-ENVIRONMENTAL

收录：;EI(收录号：20130716021878);WOS:【SCI-EXPANDED(收录号:WOS:000316583500018)】；

基金：The authors are grateful to the support from the Chinese Education Ministry 111 project (B08021), the National Natural Science Foundation of China (21006068, 21176071, 21106041, 21273070), Shanghai PuJiang Talent Program (2011/11PJ1402400), the Program for New Century Excellent Talents in University (NCET-10-0611), the Program of Introducing Talents of Discipline to Universities (B06006) for financial support, Innovation Program of Shanghai Municipal Education Commission (11ZZ52, 12ZZ051), Science and Technology Commission of Shanghai Municipality (11JC1402700).

语种：英文

外文关键词：Heterogeneous Fenton catalyst; Au catalysts; Active carbon; Degradation of bisphenol A

摘要：The development of a new method for the degradation of bisphenol A (BPA) in aqueous solution is highly desired. Oxidative degradation using hydroxyl radicals (OH center dot) is an efficient approach for the remedy of toxic organic compounds. This paper describes the design and utilization of a new Fenton system consisting of the Au/styrene based activated carbon catalyst and hydrogen peroxide (H2O2) for the degradation of BPA under non-photo-induced conditions. Transmission electron microscopy (TEM), X-ray diffraction (XRD) and X-ray photoelectron spectroscopy (XPS) results showed that the negatively charged Au nanoparticles were evenly distributed in a range 3.9-6.4 nm dominated with (1 1 0) facet. The generation of OH center dot over Au catalysts through the decomposition of H2O2 was evidenced using 5,5-dimethyl-1-pyrroline-N-oxide (DMPO) trapped electron paramagnetic resonance (EPR). The experimental results suggested that the conversion of BPA was affected by several factors such as the loading amount of Au, pH value, reaction temperature and the initial concentration of H2O2. In an optimum experiment, BPA could be degraded from 110 to 10 ppm within 12 h. The active sites was envisaged to be negatively charged Au atoms at the interface between Au particles and carbon support, the carbon surface is enriched with dangling carbon atoms as evidenced by the O-2-temperature programmed desorption (TPD) technique. A mechanism including the redox between Au delta- <-> Au degrees during the decomposition of H2O2 has been proposed. (C) 2013 Elsevier B.V. All rights reserved.