文献类型：期刊文献

英文题名：MOFs derived carbon supporting CuCo nanospheres as efficient catalysts of peroxymonosulfate for rapid removal of organic pollutant

作者：Li, Huanxuan[1];Su, Liya[1];Zheng, Junting[1];Lu, Shun[1];Yang, Zongxiang[1];Wang, Chunhui[1];Xu, Shaodan[1];Zhou, Qingwei[1];Tang, Junhong[1];Huang, Mingzhi[2];Zhang, Yayun[3]

机构：[1]Hangzhou Dianzi Univ, Coll Mat & Environm Engn, Hangzhou 310018, Peoples R China;[2]South China Normal Univ, Sch Environm, Guangzhou 510006, Peoples R China;[3]East China Univ Sci & Technol, State Key Lab Chem Engn, Shanghai 200237, Peoples R China

年份：2023

卷号：451

外文期刊名：CHEMICAL ENGINEERING JOURNAL

收录：;EI(收录号：20223712739811);WOS:【SCI-EXPANDED(收录号:WOS:000893818100002)】；

基金：Acknowledgements This work was supported by Natural Science Foundation of Zhejiang Province (No. LY20B070006) , National Natural Science Foundation of China (No. 51808177, 51908127) , and Natural Science Foundation of Guangdong Province (No. 2016A030306033) .

语种：英文

外文关键词：Peroxymonosulfate (PMS); CuCo@C; Degradation mechanisms; DFT calculations; Toxicity assessment

摘要：Metal-organic frameworks (MOFs) derived materials have been demonstrated to be promising alternatives for wastewater treatment. In this study, carbon supporting CuCo nanospheres (CuCo@C) with highly exposed active sites derived from bimetallic CuCo-MOF-74 presented excellent stability with continuous five cyclic reaction. The CuCo@C exhibited a highly efficient catalytic performance towards peroxymonosulfate (PMS), resulting in 100 % of Orange G (OG) removal in the presence of 2 mM of PMS and extremely low CuCo@C loading of 50.0 mg/L in 15 min. The synergistic effects between Cu and Co and the fast regeneration of low-valence metals were responsible for the excellent heterogeneous catalytic process, where O-1(2) was generated as the dominant species with some .OH, and SO4 center dot- . Besides, the carbon shell played a vital role in the improvement of CuCo@C stability. The high Fukui nucleophilic (f`) index and quantitative structure-activity relationship (QSAR) indicated the preferred attacking sites and toxicity reducing of OG, respectively. The main intermediate products of OG were detected and the possible degradation pathway was proposed. Moreover, CuCo@C/PMS system exhibited broad applicability and compatibility suitable for degradation of various kinds of organic pollutant. The excellent catalytic performance, reduced toxicity of OG intermediates, good stability and reusability of CuCo@C all suggested the great application potential in practical water treatment.