The photocatalytic NO-removal activity of g-C₃N₄ significantly enhanced by the synergistic effect of Pd⁰ nanoparticles and N vacancies

Jiahao GENG, Liaoliao ZHAO, Mengmeng WANG, Guohui DONG, Wing Kei HO

Research output: Contribution to journalArticlespeer-review

28 Citations (Scopus)

Abstract

Graphite carbon nitride (g-C₃N₄) has been proven to have photocatalytic activity for NO-removal under visible-light irradiation. However, the competitive adsorption between NO and O₂ during the process may decrease the NO-removal activity of g-C₃N₄. In this study, N vacancies were constructed around Pd⁰ nanoparticles through the heat-island effect. The co-existence of N vacancies and Pd⁰ nanoparticles created a synergistic effect, which weakened the competitive adsorption between NO and O₂. Moreover, this synergistic effect improved the charge transfer and produced more hydroxyl radicals. As a result, the NO-removal activity of g-C₃N₄ was significantly improved. This study provided new insights into the design of photocatalysts used to remove gas pollutants through photocatalysis. Copyright © 2022 The Royal Society of Chemistry.

Original languageEnglish
Pages (from-to)742-750
JournalEnvironmental Science: Nano
Volume9
Issue number2
Early online dateJan 2022
DOIs
Publication statusPublished - Feb 2022

Citation

Geng, J., Zhao, L., Wang, M., Dong, G., & Ho, W. (2022). The photocatalytic NO-removal activity of g-C₃N₄ significantly enhanced by the synergistic effect of Pd⁰ nanoparticles and N vacancies. Environmental Science: Nano, 9(2), 742-750. doi: 10.1039/D1EN00937K

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