Selective breaking of hydrogen bonds of layered carbon nitride for visible light photocatalysis

Kang, Yuyang, Yang, Yongqiang, Yin, Li-Chang, Kang, Xiangdong, Wang, Lianzhou, Liu, Gang and Cheng, Hui-Ming (2016) Selective breaking of hydrogen bonds of layered carbon nitride for visible light photocatalysis. Advanced Materials, 28 30: 6471-6477. doi:10.1002/adma.201601567


Author Kang, Yuyang
Yang, Yongqiang
Yin, Li-Chang
Kang, Xiangdong
Wang, Lianzhou
Liu, Gang
Cheng, Hui-Ming
Title Selective breaking of hydrogen bonds of layered carbon nitride for visible light photocatalysis
Journal name Advanced Materials   Check publisher's open access policy
ISSN 1521-4095
0935-9648
Publication date 2016-08-10
Sub-type Letter to editor, brief commentary or brief communication
DOI 10.1002/adma.201601567
Open Access Status Not yet assessed
Volume 28
Issue 30
Start page 6471
End page 6477
Total pages 7
Place of publication Weinheim, Germany
Publisher Wiley - V C H Verlag GmbH & Co. KGaA
Language eng
Subject 2500 Materials Science
2211 Mechanics of Materials
2210 Mechanical Engineering
Abstract Two remarkable features were created by selectively breaking hydrogen bonds existing in the C-N covalent bonds-dominated intralayer framework of layered carbon nitride. One is the increased band tails or localized states close to the band edges as a result of the destruction of intralayer long-range atomic order and loss of partial nitrogen atoms. The other is the abundant pores formed throughout the whole particles as a result of volume shrinkage with the breaking of hydrogen bonds. These abundant pores subsequently promote the transfer of electrons to reach the lateral surface of the pores by providing additional reductive reaction sites. As a consequence of these favorable changes in improving all three basic processes of photocatalysis, the carbon nitride with an optimized breaking of hydrogen bonds gives a significantly enhanced photocatalytic hydrogen generation activity under visible light. These results suggest that the number of the reductive reaction sites of the carbon nitride with broken hydrogen bonds is greatly increased with the abundant lateral edges/surfaces of the pore walls as additional reductive reaction sites.
Keyword Carbon nitride
Hydrogen bonds
Photocatalyst
Visible light
Q-Index Code CX
Q-Index Status Provisional Code
Institutional Status UQ

Document type: Journal Article
Sub-type: Letter to editor, brief commentary or brief communication
Collections: School of Chemical Engineering Publications
HERDC Pre-Audit
Australian Institute for Bioengineering and Nanotechnology Publications
 
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