文献类型：期刊文献

英文题名：Anchoring cobalt dual-atom pairs on open hollow-structured carbon via a facile in-situ synthetic strategy for enhanced advanced oxidation processes

作者：Fu, Zhinan[1,2];Xia, Wenxin[3];Wang, Weihua[4];Liu, Xin[1];Wang, Yixing[2];Zhou, Lihui[3];Wang, Kuanwen[5];Dai, Sheng[3];Guo, Xuhong[1]

机构：[1]East China Univ Sci & Technol, Sch Chem Engn, State Key Lab Chem Engn, Shanghai 200237, Peoples R China;[2]Suzhou Lab, Suzhou 215100, Peoples R China;[3]East China Univ Sci & Technol, Feringa Nobel Prize Scientist Joint Res Ctr, Sch Chem & Mol Engn, Shanghai 200237, Peoples R China;[4]Sinopec Shanghai Res Inst Petrochem Technol, Shanghai 201208, Peoples R China;[5]Natl Cent Univ, Inst Mat Sci & Engn, Taoyuan 320, Taiwan

年份：2025

卷号：355

外文期刊名：SEPARATION AND PURIFICATION TECHNOLOGY

收录：;EI(收录号：20243817066090);WOS:【SCI-EXPANDED(收录号:WOS:001317973000001)】；

基金：The authors would like to acknowledge National Key Research and Development Program of China (2023YFD1700303) , the National Natural Science Foundation of China (22376062) , the Science and Technology Commission of Shanghai Municipality (22ZR1415700) , and China Scholarship Council (CSC) for financial support. Additional support was provided by the Feringa Nobel Prize Scientist Joint Research Center and the Research Center of Analysis and Test at East China University of Science and Technology.

语种：英文

外文关键词：Atomically dispersed catalysts; Advanced oxidation processes; Open hollow structure; Fenton-like process; Stability

摘要：Atomically dispersed catalysts offer unprecedented opportunities for high-efficiency Fenton-like oxidation of organic pollutants in water. However, the hazardous metal leaching of atomically dispersed catalysts hinders their practical application for wastewater treatment, while the inaccessible interior active sites in carbon substrates have been commonly overlooked. Herein, we develop a straightforward approach for tightly anchoring cobalt dual-atom pairs on nitrogen-doped open hollow carbon structure (Co-NOHC) via an in-situ polyelectrolyte nanosphere-guided strategy. The unique open hollow carbon structure benefits the electron/mass transfer and maximizes the exposure of active sites. As a result, the as-synthesized Co-NOHC exhibits outstanding peroxymonosulfate activation activity and Fenton-like performance in oxidation by taking rhodamine B degradation as an example. Remarkably, the turnover frequency of the Co-NOHC is 6.5, 26.5, and 9.3 times higher than that of the Co2+, cobalt, and its oxides, respectively, and its catalytic activity also greatly outperforms the pristine zeolitic-imidazole frameworks derived Co-based atomically dispersed catalysts. More importantly, benefitted from the stable anchoring of cobalt dual atoms, the Co2+ leaching from the Co-NOHC is greatly alleviated, as low as 0.1 mg/L after the catalytic reaction, showing outstanding stability as compared to most atomically dispersed catalysts. Furthermore, the reactive active species, including SO4-, OH and O-2(-) radicals, and electron-transfer mechanism are demonstrated to dominate the rhodamine B removal. This work offers a new consideration for promoting the development of the advanced catalysts and their potential applications in advanced oxidation process.