Volume 60, Issue 40 pp. 21751-21755
Communication

Carbon Nitride Supported High-Loading Fe Single-Atom Catalyst for Activation of Peroxymonosulfate to Generate 1O2 with 100 % Selectivity

Dr. Long-Shuai Zhang

Dr. Long-Shuai Zhang

Key Laboratory of Jiangxi Province for Persistent Pollutants Control and Resources Recycle, Nanchang Hangkong University, Nanchang, Jiangxi, 330063 P. R. China

These authors contributed equally to this work.

Search for more papers by this author
Dr. Xun-Heng Jiang

Dr. Xun-Heng Jiang

Key Laboratory of Jiangxi Province for Persistent Pollutants Control and Resources Recycle, Nanchang Hangkong University, Nanchang, Jiangxi, 330063 P. R. China

These authors contributed equally to this work.

Search for more papers by this author
Zi-Ai Zhong

Zi-Ai Zhong

Key Laboratory of Jiangxi Province for Persistent Pollutants Control and Resources Recycle, Nanchang Hangkong University, Nanchang, Jiangxi, 330063 P. R. China

Search for more papers by this author
Lei Tian

Lei Tian

Key Laboratory of Jiangxi Province for Persistent Pollutants Control and Resources Recycle, Nanchang Hangkong University, Nanchang, Jiangxi, 330063 P. R. China

Search for more papers by this author
Qing Sun

Qing Sun

Key Laboratory of Jiangxi Province for Persistent Pollutants Control and Resources Recycle, Nanchang Hangkong University, Nanchang, Jiangxi, 330063 P. R. China

Search for more papers by this author
Prof. Yi-Tao Cui

Prof. Yi-Tao Cui

SANKA High Technology Co. Ltd. 90-1, Kurimachi, Shingu-machi, Tatsuno, Hyogo, 679-5155 Japan

Search for more papers by this author
Prof. Xin Lu

Prof. Xin Lu

State Key Laboratory of Physical Chemistry of Solid Surface, Xiamen University, Xiamen, Fujian, 361005 P. R. China

Search for more papers by this author
Prof. Jian-Ping Zou

Corresponding Author

Prof. Jian-Ping Zou

Key Laboratory of Jiangxi Province for Persistent Pollutants Control and Resources Recycle, Nanchang Hangkong University, Nanchang, Jiangxi, 330063 P. R. China

Search for more papers by this author
Prof. Sheng-Lian Luo

Prof. Sheng-Lian Luo

Key Laboratory of Jiangxi Province for Persistent Pollutants Control and Resources Recycle, Nanchang Hangkong University, Nanchang, Jiangxi, 330063 P. R. China

Search for more papers by this author
First published: 03 August 2021
Citations: 379

Graphical Abstract

The carbon nitride supported Fe single-atom catalyst (Fe1/CN) with a Fe loading of 11.2 wt % was developed to generate 100 % 1O2 by activating peroxymonosulfate (PMS). The adsorption of terminal O and oxidation of PMS by Fe-N4 sites played the most important roles for 1O2 generation with 100 % selectivity. As a result, the Fe1/CN activated PMS system exhibited strong resistance to various factors during the degradation of organic pollutants.

Abstract

Singlet oxygen (1O2) is an excellent active species for the selective degradation of organic pollutions. However, it is difficult to achieve high efficiency and selectivity for the generation of 1O2. In this work, we develop a graphitic carbon nitride supported Fe single-atoms catalyst (Fe1/CN) containing highly uniform Fe-N4 active sites with a high Fe loading of 11.2 wt %. The Fe1/CN achieves generation of 100 % 1O2 by activating peroxymonosulfate (PMS), which shows an ultrahigh p-chlorophenol degradation efficiency. Density functional theory calculations results demonstrate that in contrast to Co and Ni single-atom sites, the Fe-N4 sites in Fe1/CN adsorb the terminal O of PMS, which can facilitate the oxidization of PMS to form SO5.−, and thereafter efficiently generate 1O2 with 100 % selectivity. In addition, the Fe1/CN exhibits strong resistance to inorganic ions, natural organic matter, and pH value during the degradation of organic pollutants in the presence of PMS. This work develops a novel catalyst for the 100 % selective production of 1O2 for highly selective and efficient degradation of pollutants.

The full text of this article hosted at iucr.org is unavailable due to technical difficulties.