Boron-doped graphitic carbon nitride nanosheets for enhanced visible-light driven photocatalytic water splitting

Thaweesak, Supphasin, Wang, Songcan, Lyu, Miaoqiang, Xiao, Mu, Peerakiatkhajohn, Piangjai and Wang, Lianzhou (2017) Boron-doped graphitic carbon nitride nanosheets for enhanced visible-light driven photocatalytic water splitting. Dalton Transactions, 46 32: 10714-10720. doi:10.1039/C7DT00933J


Author Thaweesak, Supphasin
Wang, Songcan
Lyu, Miaoqiang
Xiao, Mu
Peerakiatkhajohn, Piangjai
Wang, Lianzhou
Title Boron-doped graphitic carbon nitride nanosheets for enhanced visible-light driven photocatalytic water splitting
Journal name Dalton Transactions   Check publisher's open access policy
ISSN 1477-9226
1477-9234
Publication date 2017-05-22
Year available 2017
Sub-type Article (original research)
DOI 10.1039/C7DT00933J
Open Access Status Not yet assessed
Volume 46
Issue 32
Start page 10714
End page 10720
Total pages 7
Place of publication Cambridge, United Kingdom
Publisher Royal Society of Chemistry
Language eng
Subject 1604 Inorganic Chemistry
Abstract A new type of boron-doped graphitic carbon nitride (B-g-CN) nanosheets was prepared by a benign one-pot thermal polycondensation process. Systematic studies revealed that a B-doping amount of 1 at% into g-CN (1at%B-g-CN) showed the best photocatalytic H evolution activity of 1880 μmol h g under visible light irradiation (>400 nm), which is more than 12 times that of the pristine g-CN bulk. Detailed characterizations revealed that the high photocatalytic performance could be attributed to the combination of band structure engineering and morphological control. B-doping not only reduces the band gap to absorb more visible light but also exhibits a higher surface area of B-g-CN (49.47 m g) as compared to that of g-CN bulk (8.24 m g), which subsequently improve the photocatalytic performance drastically. This work demonstrates a synergistic strategy to prepare efficient metal-free B-g-CN nanosheets as a promising photocatalyst for H evolution under visible light with good stability.
Formatted abstract
A new type of boron-doped graphitic carbon nitride (B-g-C3N4) nanosheets was prepared by a benign one-pot thermal polycondensation process. Systematic studies revealed that a B-doping amount of 1 at% into g-C3N4 (1at%B-g-C3N4) showed the best photocatalytic H2 evolution activity of 1880 μmol h−1 g−1 under visible light irradiation (>400 nm), which is more than 12 times that of the pristine g-C3N4 bulk. Detailed characterizations revealed that the high photocatalytic performance could be attributed to the combination of band structure engineering and morphological control. B-doping not only reduces the band gap to absorb more visible light but also exhibits a higher surface area of B-g-C3N4 (49.47 m2 g−1) as compared to that of g-C3N4 bulk (8.24 m2 g−1), which subsequently improve the photocatalytic performance drastically. This work demonstrates a synergistic strategy to prepare efficient metal-free B-g-C3N4 nanosheets as a promising photocatalyst for H2 evolution under visible light with good stability.
Keyword Chemistry, Inorganic & Nuclear
Chemistry
Q-Index Code C1
Q-Index Status Provisional Code
Institutional Status UQ

Document type: Journal Article
Sub-type: Article (original research)
Collections: School of Chemical Engineering Publications
HERDC Pre-Audit
Australian Institute for Bioengineering and Nanotechnology Publications
 
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Created: Thu, 06 Jul 2017, 10:43:17 EST by Ms Kirsty Fraser on behalf of School of Chemical Engineering