文献类型：期刊文献

英文题名：In-situ production and activation of H2O2 for enhanced degradation of roxarsone by FeS2 decorated resorcinol-formaldehyde resins

作者：Li, Xia[1];He, Jie[1];Lu, Jian[1,2];Zhou, Yi[1,3];Zhou, Yanbo[1,2]

机构：[1]East China Univ Sci & Technol, State Environm Protect Key Lab Environm Risk Asse, 130 Meilong Rd, Shanghai 200237, Peoples R China;[2]Shanghai Inst Pollut Control & Ecol Secur, 1515 Zhongshan Second North Rd, Shanghai 200092, Peoples R China;[3]East China Univ Sci & Technol, Shanghai Engn Res Ctr Multimedia Environm Catalys, 130 Meilong Rd, Shanghai 200237, Peoples R China

年份：2022

卷号：424

外文期刊名：JOURNAL OF HAZARDOUS MATERIALS

收录：;EI(收录号：20214711193635);WOS:【SCI-EXPANDED(收录号:WOS:000734403300009)】；

基金：This work was supported by the National Natural Science Foundation of China (51778230, 21906056), Program of Shanghai Outstanding Technology Leaders (Grant No. 20XD1433900) , Shanghai Municipal Science and Technology (No. 20DZ2250400) and Shanghai Sailing Program (19YF1411900) .

语种：英文

外文关键词：Roxarsone; Photo-Fenton; Degradation; Resorcinol-formaldehyde resins

摘要：Fenton technology performs well in high-risk roxarsone (ROX) removal, but it is limited by the high H2O2 transportation and storage risks. Herein, FeS2 decorated resorcinol-formaldehyde resins (FeS2-RFR) were successfully prepared to in-situ produce and utilize H2O2 for efficient removal of ROX. Under solar light illumination, resorcinol-formaldehyde resins (RFR) efficiently generated a high concentration of H2O2, with a yield of 500 mu mol g-1 h-1. FeS2 can in-situ decompose H2O2 to generate center dot OH, participating in the oxidation of ROX. As a result, the FeS2-RFR catalyst degraded more than 97% of ROX within 2 h and ROX was selectively degraded into low-toxic As(V), which can be simply removed by traditional adsorption or precipitation processes. During the degradation of ROX, center dot OH played a dominant role. Moreover, the cations (Na+, K+, and Ca2+), anions (SO42-, Cl- ), and humic acid had no noticeable inhibition effect on ROX removal. Furthermore, FeS2-RFR can still remove 70% of ROX even after three cycles, proving that this in-situ photo-Fenton system exhibited stability. This study innovatively proposed a double-active site FeS2-RFR photocatalyst for in-situ production and activation of H2O2 and showed a sustainable and eco-friendly way for organoarsenic compounds degradation.