1. Regulating the Assembly of Precursors of Carbon Nitrides to Improve Photocatalytic Hydrogen Production.
- Author
-
Liu, Xinying, Zhao, Chengxiao, Muhmood, Tahir, and Yang, Xiaofei
- Subjects
HYDROGEN production ,ELECTRON-hole recombination ,NITRIDES ,CYANURIC acid ,PHOTOCATALYSTS ,MELAMINE ,HYDROGEN evolution reactions ,VISIBLE spectra - Abstract
Two-dimensional graphitic carbon nitrides (2D g-C
3 N4 ) are promising photocatalysts for water splitting to hydrogen due to their non-toxicity and high stability. However, the bulk g-C3 N4 has some intrinsic drawbacks, such as rapid electron–hole recombination and low charge-carrier mobility, resulting in poor photocatalytic activity. Here, 2,4-diamine-6-phenyl-1,3,5-triazine was employed as a precursor to regulating the assembly of melamine and cyanuric acid in water. The resulting g-C3 N4 not only improved the visible light absorption and electron–hole separation but also provided more catalytic sites for enhanced photocatalytic hydrogen evolution. The modified g-C3 N4 (CNP10-H) showed a hydrogen-releasing rate of 2184 μmol·g−1 ·h−1 , much higher than the bulk g-C3 N4 . [ABSTRACT FROM AUTHOR]- Published
- 2022
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