Hydrogen Peroxide Heterolytic Cleavage Induced Gas Phase Photo-Fenton Oxidation of Nitric Oxide

被引：0
|
作者：
Liu, Xiaoyan [1 ]
Li, Shuangjun [1 ]
Ren, Zhouhong [3 ]
Cao, Haiyan [1 ]
Yang, Qingyu [1 ]
Luo, Zhuyu [1 ]
He, Linfeng [1 ]
Zhao, Jinpeng [1 ]
Wang, Qing [1 ]
Li, Guisheng [1 ,2 ]
Liu, Xi [3 ]
Chen, Liwei [3 ]
Li, Hexing [1 ]
Zhang, Dieqing [1 ]
机构：
[1] The Education Ministry, Key Lab of Resource Chemistry, Joint International Research Laboratory of Resource Chemistry of Ministry of Education, Shanghai Key Laboratory of Rare Earth Functional Materials, Shanghai Frontiers Science Center, Biomimetic Catalys
[2] School of Materials and Chemistry, University of Shanghai for Science and Technology, Shanghai,200093, China
[3] School of Chemistry and Chemical Engineering, In-situ Center for Physical Sciences, Frontiers Science Center for Transformative Molecules, Shanghai Jiao Tong University, Shanghai,200240, China
来源：
Environmental Science and Technology | 2024年 / 58卷 / 40期
基金：
中国国家自然科学基金;
关键词：
Air pollution - Air pollution control - Iron - Nitrogen oxides - Photolysis - Photooxidation - Reactive oxygen species;
D O I：
10.1021/acs.est.4c05999
中图分类号：
学科分类号：
摘要：
Nitric oxide (NO) is one of the major air pollutants that may cause ecological imbalance and severe human disease. However, the removal of NO faces challenges of low efficiency, high energy consumption, and production of toxic NO2 byproducts. Herein, we report an efficient *OOH intermediate-involved NO oxidation route with high NO3- selectivity via a gas phase photo-Fenton system. Fe single atoms (Fe SAs)-anchored NH2-UiO-66(Zr) (Fe SAs@NU) was synthesized. The five-coordinated Fe SAs undergo a transient structure reconstitution during the photo-Fenton process, which enables a novel heterolytic cleavage pathway of H2O2 to derive specific ·OOH/·O2- radicals as reactive oxygen species. Therefore, a high NO (550 parts per billion) removal rate of 81% (NO3- selectivity up to 99%) is achieved under visible-light irradiation (>420 nm). This study provides new insight for the high-performance photo-Fenton process via a transient structure reconstitution pathway for the removal of gas phase NOx pollutants. © 2024 American Chemical Society.
引用
收藏
页码：17797 / 17806
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