Hydrogen Peroxide Heterolytic Cleavage Induced Gas Phase Photo-Fenton Oxidation of Nitric Oxide
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.
Authors
- Shuangjun Li (ORCID: https://orcid.org/0000-0001-5522-7083)
- Zhuyu Luo
- Guisheng Li (ORCID: https://orcid.org/0000-0002-4522-8936)
- Dieqing Zhang (ORCID: https://orcid.org/0000-0003-4043-771X)
- Haiyan Cao
- Hexing Li (ORCID: https://orcid.org/0000-0002-3558-5227)
- Zhouhong Ren
- Qingyu Yang (ORCID: https://orcid.org/0000-0002-1525-2900)
- Xiaoyan Liu (ORCID: https://orcid.org/0000-0001-6921-5884)
- Qing Wang (ORCID: https://orcid.org/0000-0002-5968-3235)
- Xi Liu (ORCID: https://orcid.org/0000-0002-8654-0774)
- Linfeng He (ORCID: https://orcid.org/0000-0001-7567-6708)
- Jinpeng Zhao
- Liwei Chen (ORCID: https://orcid.org/0000-0003-4160-9771)
Institutions
- University of Shanghai for Science and Technology (CN)
- Shanghai Jiao Tong University (CN)
- Shanghai Normal University (CN)
Publication Details
- Journal
- Environmental Science & Technology
- Published
- 2024-09-30
- DOI
- https://doi.org/10.1021/acs.est.4c05999
- Citations
- 34
- Primary Topic
- Catalytic Processes in Materials Science
- Type
- article
- Field-Weighted Citation Impact
- 3.98
Funders
- National Natural Science Foundation of China
- Science and Technology Commission of Shanghai Municipality
- Shanghai Municipal People's Government
- National Key Research and Development Program of China