文献类型：期刊文献

英文题名：N-doped biochar-Fe/Mn as a superior peroxymonosulfate activator for enhanced bisphenol a degradation

作者：Xiao, Huiji[1];Wang, Yun[1];Lv, Kewei[2];Zhu, Chenxi[1];Guan, Xiaohong[3];Xie, Bing[3,4];Zou, Xiaoming[1];Luo, Xubiao[1];Zhou, Yanbo[1,2,4]

机构：[1]Jinggangshan Univ, Sch Life Sci, Key Lab Jiangxi Prov Funct Biol & Pollut Control R, Jian 343009, Peoples R China;[2]East China Univ Sci & Technol, State Environm Protect Key Lab Environm Risk Asses, Shanghai 200237, Peoples R China;[3]East China Normal Univ, Shanghai Engn Res Ctr Biotransformat Organ Solid W, Sch Ecol & Environm Sci, Shanghai 200241, Peoples R China;[4]Shanghai Inst Pollut Control & Ecol Secur, Shanghai 200092, Peoples R China

年份：2025

卷号：278

外文期刊名：WATER RESEARCH

收录：;EI(收录号：20251017983705);WOS:【SCI-EXPANDED(收录号:WOS:001441489400001)】；

基金：This work was supported by the National Natural Science Foundation of China (Grant No 52370168) , the Key Laboratory of Functional Biology and Pollution Control in red soil regions of Jiangxi Province (Grant No 2023SSY02051) .

语种：英文

外文关键词：Advanced oxidation; Peroxymonosulfate activation; Bimetallic catalyst; N -doped biochar; Emerging contaminants

摘要：Emerging contaminants (ECs) are characterized by their widespread environmental distribution and low concentrations, posing significant challenges for their effective removal from source wastewater. To better deal with the problems associated with ECs, we developed a robust Fe-Mn bimetallic catalyst supported on N-doped biochar (FM@NBC-8) for peroxymonosulfate (PMS)-mediated advanced oxidation system, in which bisphenol A (BPA) was investigated as a typical EC. Particularly, complete degradation of BPA in the FM@NBC-8/PMS system was achieved within 5 min, accompanying with a high TOC removal. The degradation rate of BPA with FM@NBC-8 was 143 times that of the initial biochar (BC-8), 20 and 91 times that of single metal-doped catalysts Fe (F@NBC-8) and Mn (M@NBC-8), respectively. The degradation rate of BPA was enhanced to 1.7337 min-1 with 0.6 g L-1 FM@NBC-8 utilized to activate PMS, achieving a superior performance in BPA degradation compared to most reported results in the literature (0.081 similar to 1.43 min-1). The introduction of Fe, Mn, and N elements dramatically enhanced the specific surface area (from 46.285 to 218.541 m2 g-1) of the catalyst, thereby enhancing the adsorption capacity of PMS and pollutants on the catalyst. Moreover, the accelerated electron transfer between the catalyst and PMS favored the formation of low-valent metal intermediates (Fe(II)-O-O-SO3- and Mn(II)-O-O-SO3-), responsible for the generation of SO4center dot-and center dotOH. And 1O2 was generated mainly via the decomposition of SO5center dot- in FM@NBC-8/PMS system, thereby collectively enhancing the pollutant degradation. The stability of the catalyst was attributed to the synergistic effects of nitrogen doping and biochar encapsulation, which ensured effective operation of the FM@NBC-8/PMS system across a broad pH range of 3 to 10, while also providing resistance to interference from ubiquitous anions. This study indicates that the bimetal biochar-based materials for catalytic PMS activation have significant potential for practical application in green environmental remediation.