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Green and alcohol-free H2O2 generation paired with simultaneous contaminant treatment enabled by sulfur/cyano-modified g-C3N4 with efficient oxygen activation and proton adsorption.
- Source :
-
Green Chemistry . 3/7/2024, Vol. 26 Issue 5, p2730-2739. 10p. - Publication Year :
- 2024
-
Abstract
- Photocatalytic H2O2 generation is compelling for sustainable solar-to-chemical conversion, but it is an emerging challenge to realize efficient conversion without the consumption of any alcohols. Also, the in-depth mechanism for the structure-induced activity enhancement is still unclear but remains pivotal for practical application. Herein, cyano groups and S atoms were collectively introduced into carbon nitride (MTCN), and the vital roles and detailed mechanism were investigated. Specifically, MTCN exhibited a laudable H2O2 generation of 68.12 mM gcat−1 h−1, together with an apparent quantum yield of 49.01% at 420 nm. Intriguingly, it was observed that the existence of some contaminants can promote H2O2 generation and, in turn, accelerate degradation. Additionally, it is revealed that the S atoms and cyano group could facilitate oxygen adsorption and H+ adsorption, respectively. This study shows a promising strategy to construct modified g-C3N4 and exhibits a clear mechanism for H2O2 generation paired with simultaneous contaminant treatment. [ABSTRACT FROM AUTHOR]
- Subjects :
- *ADSORPTION (Chemistry)
*CYANO group
*PROTONS
*POLLUTANTS
*OXYGEN
Subjects
Details
- Language :
- English
- ISSN :
- 14639262
- Volume :
- 26
- Issue :
- 5
- Database :
- Academic Search Index
- Journal :
- Green Chemistry
- Publication Type :
- Academic Journal
- Accession number :
- 175824707
- Full Text :
- https://doi.org/10.1039/d3gc04123a