Journal
APPLIED SURFACE SCIENCE
Volume 563, Issue -, Pages -Publisher
ELSEVIER
DOI: 10.1016/j.apsusc.2021.150409
Keywords
Graphitic carbon nitride; Photosensitization; NSGQDs; Solar photocatalysis; H-2 evolution
Categories
Funding
- INST Mohali [SR/NM/NT-06/2016]
Ask authors/readers for more resources
The development of semiconductor heterostructure photocatalysts, such as g-CN/NSGQDs, has shown promising results in enhancing hydrogen evolution through water splitting under sunlight, with improved charge transfer kinetics and reduced recombination.
The evolution of hydrogen by splitting water and sunlight renders a promising approach to produce scalable and sustainable carbon-free green energy. In this aspect, development of semiconductor heterostructure photocatalyst can spatially separate photogenerated electron-hole at the heterojunction interface and inhibit charge recombination to synergistically enhance photocatalytic performance. Herein, for the first time, we have designed exfoliated graphitic-carbon nitride (g-CN)/N, S co-doped graphene quantum dots (NSGQDs) heterostructure grown by one pot pyrolysis process. NSGQDs create strong pi-pi interactions with g-CN to construct an effective heterostructure and thus act as a efficient photosensitiser. We have made extensive investigations to understand the nature of g-CN/NSGQDs heterostructure, like optical and electrochemical properties and its shows improved charge transfer kinetics with reduced recombination. As a result, g-CN/NSGQDs heterostructure has achieved significantly high hydrogen evolution rate (HER) of 5.24 mmol h(-1) g(-1) under sunlight and with the apparent quantum yield (AQY) of 23.2%.
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