文献类型：期刊文献

英文题名：Synthesis of millimeter-scale sponge Fe/Cu bimetallic particles removing TBBPA and insights of degradation mechanism

作者：Yu, Yunjiang[1,2];Huang, Zheng[1];Deng, Dongyang[2,3];Ju, Yongming[2,3];Ren, Luyao[1];Xiang, Mingdeng[2];Li, Liangzhong[2];Li, Hui[1]

机构：[1]East China Univ Sci & Technol, Sch Resources & Environm Engn, State Environm Protect Key Lab Environm Risk Asse, Shanghai 200237, Peoples R China;[2]Minist Environm Protect, South China Inst Environm Sci, Guangzhou 510655, Guangdong, Peoples R China;[3]South China Subctr State Environm Dioxin Monitori, Innovat Lab Environm Funct Mat & Environm Applica, Guangzhou 510655, Guangdong, Peoples R China

年份：2017

卷号：325

起止页码：279

外文期刊名：CHEMICAL ENGINEERING JOURNAL

收录：;EI(收录号：20172103686328);WOS:【SCI-EXPANDED(收录号:WOS:000403733800028)】；

基金：This work was supported jointly by the National Natural Science Foundation of China (U1401233, 41273109, 51378208 and 51578240), the National key research and development plan (2016YFC0206200), the Fok Ying Tung Education Foundation (141077), the Innovation Program of the Shanghai Municipal Education Commission (14ZZ059), Fundamental Research Funds for the Central Universities (WB1516015, WB1616012). We also would like to thank the anonymous referees for their helpful comments on this paper.

语种：英文

外文关键词：Tetrabromobisphenol A; s-FeCu; Degradation pathway; LC/TOF/MS

摘要：Tetrabromobisphenol A (TBBPA) was a potential persistent organic pollutants. This study synthesized sFe/Cu bimetallic particles by decorated sponge iron (s-Fe) with Copper (Cu) to degrade TBBPA. S-Fe/Cu bimetallic particles was further characterized by XRD, XPS, SEM and EDS. The optimal TBBPA removal efficiency was 95.9%. Among the theoretical Cu mass loading increasing from 0 wt% to 6 wt%, 4 wt% mass loading was the best; with TBBPA initial concentration increased from 5 mg/L to 30 mg/L, TBBPA removal efficiency decreased from 91.2% to 73.0%; also, when dosage increased from 10 WI. to 30 g/L, removal efficiency increased from 58.1% to 95.9%; pH 6.5 were beneficial to degrading TBBPA and the s-Fe/Cu bimetallic particles showed strong catalytic ability after 4 reuse cycle. Kinetic analysis showed that the degradation of TBBPA obeyed pseudo-first-order kinetics. In addition, Liquid Chromatography Time-of Flight Mass Spectrometry (LC/TOF/MS) detected degradation products including debromination products, hydroxylation products, single aromatic ring products and O-methylating product, which demonstrated that the main degradation pathway were debromination, hydroxyl, beta-scission and O-methylation reactions. (C) 2017 Elsevier B.V. All rights reserved.