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

被引：10
|
作者：
Liu, Xiaoyan [1 ,2 ]
Li, Shuangjun [1 ,2 ]
Ren, Zhouhong [4 ]
Cao, Haiyan [1 ,2 ]
Yang, Qingyu [1 ,2 ]
Luo, Zhuyu [1 ,2 ]
He, Linfeng [1 ,2 ]
Zhao, Jinpeng [1 ,2 ]
Wang, Qing [1 ,2 ]
Li, Guisheng [1 ,2 ,3 ]
Liu, Xi [4 ]
Chen, Liwei [4 ]
Li, Hexing [1 ,2 ]
Zhang, Dieqing [1 ,2 ]
机构：
[1] Shanghai Normal Univ, Shanghai Key Lab Rare Earth Funct Mat, Joint Int Res Lab Resource Chem, Educ Minist ,Key Lab Resource Chem, Shanghai 200234, Peoples R China
[2] Shanghai Normal Univ, Shanghai Frontiers Sci Ctr Biomimet Catalysis Inst, Shanghai 200234, Peoples R China
[3] Univ Shanghai Sci & Technol, Sch Mat & Chem, Shanghai 200093, Peoples R China
[4] Shanghai Jiao Tong Univ, Frontiers Sci Ctr Transformat Mol, In Situ Ctr Phys Sci, Sch Chem & Chem Engn, Shanghai 200240, Peoples R China
来源：
ENVIRONMENTAL SCIENCE & TECHNOLOGY | 2024年 / 58卷 / 40期
基金：
中国国家自然科学基金;
关键词：
photo-Fenton catalysis; metal single atoms; metal organic frameworks; NO removal; air pollutioncontrol; METAL-ORGANIC FRAMEWORKS; ALPHA-FEOOH; SINGLE-ATOM; REMOVAL; CATALYSTS; IONS; NO;
D O I：
10.1021/acs.est.4c05999
中图分类号：
X [环境科学、安全科学];
学科分类号：
08 ; 0830 ;
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 <middle dot>OOH/<middle dot>O-2(-) 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.
引用
收藏
页码：17797 / 17806
页数：10
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