Journal
ENVIRONMENTAL SCIENCE-NANO
Volume 9, Issue 2, Pages 742-750Publisher
ROYAL SOC CHEMISTRY
DOI: 10.1039/d1en00937k
Keywords
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Funding
- National Nature Science Foundation of China [21876104, 21603271]
- General Research Fund of Research Grants Council [18300920, 18301117]
- Department Collaborative Fund [04490]
- Faculty of Liberal Arts and Social Sciences, The Education University of Hong Kong, Hong Kong Special Administrative Region, China [FLASS/DRF 04554]
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In this study, the coexistence of N vacancies and Pd-0 nanoparticles in g-C3N4 created a synergistic effect, improving the removal activity of NO. This research provides new insights for designing photocatalysts to remove gas pollutants through photocatalysis.
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 O-2 during the process may decrease the NO-removal activity of g-C3N4. In this study, N vacancies were constructed around Pd-0 nanoparticles through the heat-island effect. The co-existence of N vacancies and Pd-0 nanoparticles created a synergistic effect, which weakened the competitive adsorption between NO and O-2. 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.
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