Journal
ACS SUSTAINABLE CHEMISTRY & ENGINEERING
Volume 9, Issue 1, Pages 481-488Publisher
AMER CHEMICAL SOC
DOI: 10.1021/acssuschemeng.0c07753
Keywords
hydrogen peroxide production; vacancy engineering; Schottky junction; graphitic carbon nitride; MXene quantum dots
Categories
Funding
- National Natural Science Foundation of China [21777044, 22076046, 22006038]
- Science and Technology Commission of Shanghai Municipality [19ZR1472400, 19230711300]
- China Postdoctoral Science Foundation [2020M681209]
Ask authors/readers for more resources
The study successfully fabricated Ti3C2 quantum dot-modified defective inverse opal g-C3N4, achieving high efficiency in photocatalytic H2O2 production. By spatially separating electrons and holes, the recombination of charge carriers at defect sites was effectively avoided.
Photocatalytic H2O2 production is an environmentally friendly and sustainable production technique. Here, we fabricate the Ti3C2 quantum dot-modified defective inverse opal g-C3N4 (TC/CN) via a facile electrostatic self-assembly method. The resultant catalysts greatly facilitate the photocatalytic H2O2 production. The optimum H2O2 yield on TC/CN-20 reaches 560.7 mu mol L-1 h(-1), which is 9.3 times higher than that of bulk CN under visible light irradiation. This enhancement is attributed to the direction-induced bonding between carbon vacancies in g-C3N4 and TCQDs. The formation of a Schottky junction in the interface further realizes spatial separation of electron and holes, effectively avoiding the recombination of the charge carriers at defect sites. Therefore, this work not only constructs a high-performance photocatalyst for H2O2 production with outstanding yield and long-term recyclability but also develops a direction-induced bonding synthetic method and explores the functionary mechanism of defect sites in the Schottky junction for photocatalytic H2O2 production.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available