Single Cobalt Atoms Anchored on Porous N-Doped Graphene with Dual Reaction Sites for Efficient Fenton-like Catalysis

Journal of the American Chemical Society
Xuning LiBin Liu

Abstract

The Fenton-like process presents one of the most promising strategies to generate reactive oxygen-containing radicals to deal with the ever-growing environmental pollution. However, developing improved catalysts with adequate activity and stability is still a long-term goal for practical application. Herein, we demonstrate single cobalt atoms anchored on porous N-doped graphene with dual reaction sites as highly reactive and stable Fenton-like catalysts for efficient catalytic oxidation of recalcitrant organics via activation of peroxymonosulfate (PMS). Our experiments and density functional theory (DFT) calculations show that the CoN4 site with a single Co atom serves as the active site with optimal binding energy for PMS activation, while the adjacent pyrrolic N site adsorbs organic molecules. The dual reaction sites greatly reduce the migration distance of the active singlet oxygen produced from PMS activation and thus improve the Fenton-like catalytic performance.

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Citations

Jan 30, 2019·Chemical Communications : Chem Comm·Chao ZhaoYadong Li
Dec 12, 2018·Chemistry : a European Journal·Dekun WuYuhan Sun
May 24, 2019·Chemical Communications : Chem Comm·Chunxiao ZhaoJunhu Wang
Aug 23, 2019·Water Environment Research : a Research Publication of the Water Environment Federation·Jianmin WangChin-Pao Huang
Nov 13, 2019·Chemistry, an Asian Journal·Cheng Jiang, Chengliang Wang
Jan 14, 2020·Advanced Materials·Huijing XiangYu Chen
May 20, 2020·Chemistry : a European Journal·Hui OuyangZhifeng Fu
Jul 10, 2019·Advanced Materials·Xuning LiBin Liu
Mar 16, 2019·Nanomaterials·Tomotaroh Granzier-NakajimaYin-Ting Yeh
Jun 19, 2019·Angewandte Chemie·Lei JiaoYuehe Lin
Feb 7, 2021·Journal of Hazardous Materials·Bingkun HuangBo Lai
Jan 26, 2021·Chemical Reviews·Zhongmin TangWenbo Bu

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