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

被引：38

作者：

Geng, Jiahao ^{[1
]}

Zhao, Liaoliao ^{[2
]}

Wang, Mengmeng ^{[1
]}

Dong, Guohui ^{[1
]}

Ho, Wingkei ^{[3
,4
]}

机构：

[1] Shaanxi Univ Sci & Technol, Sch Environm Sci & Engn, Xian 710021, Peoples R China

[2] SHCCIG YuLin Chem Co Ltd, Yulin 719000, Peoples R China

[3] Educ Univ Hong Kong, Dept Sci & Environm Studies, Hong Kong, Peoples R China

[4] Educ Univ Hong Kong, Ctr Educ Environm Sustainabil, Hong Kong, Peoples R China

来源：

ENVIRONMENTAL SCIENCE-NANO | 2022年 / 9卷 / 02期

关键词：

GRAPHITIC CARBON NITRIDE; OXIDE; OXIDATION; PERFORMANCE; ABSORPTION; REDUCTION; EVOLUTION; CATALYSTS; ENERGY;

D O I：

10.1039/d1en00937k

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

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.

引用

页码：742 / 750

页数：9

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