Oxygen vacancy engineering of photocatalytic nanomaterials for enrichment, activation, and efficient removal of nitrogen oxides with high selectivity: a review

Yanfeng Lu, Meijuan Chen, Liu Jiang, Jun ji Cao, Haiwei Li, Shun Cheng Lee, Yu Huang

Research output: Journal article publicationReview articleAcademic researchpeer-review

14 Citations (Scopus)

Abstract

Air pollution by trace levels of nitric oxide (NO) pollution is threatening human health by causing acid rain and haze pollution through photochemical reactions. Here, we review photocatalytic technologies that use oxygen vacancy engineering-mediated nanomaterials for the control of air pollutants such as NO and nitrogen dioxide. We present oxygen vacancy parameters and reactor regulation mechanisms. We explain the functions of oxygen vacancies in the adsorption and enrichment processes of NO on the photocatalyst surface. We highlight the relationship between oxygen vacancies and O2 activation in photocatalytic reactions. The mechanisms ruling selectivity in NO photodegradation, and the suppression of photocatalyst deactivation are discussed.[Figure not available: see fulltext.]

Original languageEnglish
Pages (from-to)3905-3925
Number of pages21
JournalEnvironmental Chemistry Letters
Volume20
Issue number6
DOIs
Publication statusPublished - Dec 2022

Keywords

  • Degradation mechanism
  • NOx removal
  • Oxygen vacancy
  • Photocatalysis

ASJC Scopus subject areas

  • Environmental Chemistry

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