Rational Regulation of Co-N-C Coordination for High-Efficiency Generation of ~1O2 toward Nearly 100 Selective Degradation of Organic Pollutants

Chaohai Wang; Yiyuan Yao; Xin Yan

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Rational Regulation of Co-N-C Coordination for High-Efficiency Generation of ~1O2 toward Nearly 100 Selective Degradation of Organic Pollutants

机译：Rational Regulation of Co-N-C Coordination for High-Efficiency Generation of ~1O2 toward Nearly 100 Selective Degradation of Organic Pollutants

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Single oxygen-based advanced oxidation processes (~1O2-AOPs) exhibit great prospects in selective degradation of organic pollutants. However, efficient production of ~1O2 via tailored design of catalysts to achieve selective oxidation of contaminants remains challenging. Herein, we develop a simple strategy to regulate the components and coordination of Co—N—C catalysts at the atomic level by adjusting the Zn/Co ratio of bimetallic zeolitic imidazolate frameworks (Zn_xCo1ZIFs). Zn4Co1—C demonstrates 98% selective removal of phenol in the mixed phenol/benzoic acid (phenol/BA) solutions. Density functional theory calculations and experiments reveal that more active CoN4 sites are generated in Zn4Co1—C, which are beneficial to peroxymonosulfate activation to generate ~1O2. Furthermore, the correlation between the origin of selectivity and well-defined catalysts is systematically investigated by the electron paramagnetic resonance test and quenching experiments. This work may provide novel insights into selective removal of target pollutants in a complicated water matrix.

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《Environmental Science & Technology: ES&T》 |2022年第12期|8833-8843|共11页
作者
Chaohai Wang; Yiyuan Yao; Xin Yan;
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作者单位

Jiangsu Key Laboratory of Chemical Pollution Control and Resources Reuse, School of Environmental and Biological Engineering, Nanjing University of Science and Technology, Nanjing 210094, People's Republic of China;

Jiangsu Key Laboratory of Chemical Pollution Control and Resources Reuse, School of Environmental and Biological Engineering Nanjing University of Science and Technology, Nanjing 210094, People's Republic of China;

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收录信息美国《科学引文索引》(SCI);美国《工程索引》(EI);美国《生物学医学文摘》(MEDLINE);美国《化学文摘》(CA);
原文格式 PDF
正文语种英语
中图分类环境科学、安全科学;
关键词
multiple pollutants; selective oxidation; singlet oxygen; peroxymonosulfate; Co—N—C catalysts;

Rational Regulation of Co-N-C Coordination for High-Efficiency Generation of ~1O2 toward Nearly 100 Selective Degradation of Organic Pollutants

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