Journal
APPLIED SURFACE SCIENCE
Volume 506, Issue -, Pages -Publisher
ELSEVIER
DOI: 10.1016/j.apsusc.2019.144181
Keywords
Graphitic carbon nitride; Chemical self-modification; Simulated sunlight; Photocatalytic reduction; Hexavalent chromium
Categories
Funding
- NSFC of China [21573038, 51608102]
- Jilin province science and technology development projects [20160520177JH]
- Fundamental Research Funds for the Central Universities [2412019FZ018]
Ask authors/readers for more resources
Hydroxyl-modified graphitic carbon nitride (HUCN) with interconnected open-framework is fabricated by hydrolysis of urea-derived graphitic carbon nitride (UCN) in an aqueous NaOH solution followed by a self-assembly in dialysis process. Compared with bulk graphitic carbon nitride (UCN), HUCN possesses more advantages such as plentiful exposed active sites, fast photogenerated charge carrier separation rate and more negative conduction band edge potential. These advantages bestow the HUCN remarkably higher simulated sunlight photocatalytic reduction ability towards an aqueous Cr(VI) as compared with UCN. By the combination of the experimental results including photoelectrochemistry and electron scavenger with the DFT calculated electrostatic potential (ESP) distribution, a possible reaction mechanism for the simulated sunlight photocatalytic reduction of highly toxic and carcinogenic Cr(VI) to non-toxic Cr(III) is put forward tentatively.
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