Large impact of heating time on physical properties and photocatalytic H2 production of g-C3N4 nanosheets synthesized through urea polymerization in Ar atmosphere

Yu Peng Yuan; Wen Tao Xu; Li Sha Yin; Shao Wen Cao; Yu Sen Liao; Yi Qian Tng; Can Xue

doi:10.1016/j.ijhydene.2013.07.104

Large impact of heating time on physical properties and photocatalytic H₂ production of g-C₃N₄ nanosheets synthesized through urea polymerization in Ar atmosphere

Yu Peng Yuan^*, Wen Tao Xu, Li Sha Yin, Shao Wen Cao, Yu Sen Liao, Yi Qian Tng, Can Xue

^*Corresponding author for this work

Research output: Contribution to journal › Article › peer-review

114 Citations (Scopus)

Abstract

The effect of heating time on the polymerization processes of urea into g-C₃N₄ nanosheets was studied in Ar atmosphere. It was found that heating time had a great influence on the crystalline quality, specific surface area (S_BET) and photocatalytic H₂ production of the obtained g-C₃N₄ nanosheets. G-C₃N₄ nanosheets with some degree of disorders in crystal structure were formed within 1 h at 550 C, and these structural disorders maintained after 4 h, however disorders disappeared after extended heating of 6 h. G-C₃N₄ nanosheets with similar disorders in the crystal structure hold similar S_BET and exhibit comparable H₂ production rates. The highest H₂ production rate of 1.4 mmol h^-1 g^-1 occurs after 8 h heating, corresponding to 2.6% quantum efficiency at 420 nm.

Original language	English
Pages (from-to)	13159-13163
Number of pages	5
Journal	International Journal of Hydrogen Energy
Volume	38
Issue number	30
DOIs	https://doi.org/10.1016/j.ijhydene.2013.07.104
Publication status	Published - Oct 8 2013
Externally published	Yes

ASJC Scopus Subject Areas

Renewable Energy, Sustainability and the Environment
Fuel Technology
Condensed Matter Physics
Energy Engineering and Power Technology

Keywords

G-CN H production Photocatalysis Nanosheets

UN SDGs

This output contributes to the following UN Sustainable Development Goals (SDGs)

Access to Document

10.1016/j.ijhydene.2013.07.104

Cite this

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title = "Large impact of heating time on physical properties and photocatalytic H2 production of g-C3N4 nanosheets synthesized through urea polymerization in Ar atmosphere",

abstract = "The effect of heating time on the polymerization processes of urea into g-C3N4 nanosheets was studied in Ar atmosphere. It was found that heating time had a great influence on the crystalline quality, specific surface area (SBET) and photocatalytic H2 production of the obtained g-C3N4 nanosheets. G-C3N4 nanosheets with some degree of disorders in crystal structure were formed within 1 h at 550 C, and these structural disorders maintained after 4 h, however disorders disappeared after extended heating of 6 h. G-C3N4 nanosheets with similar disorders in the crystal structure hold similar SBET and exhibit comparable H2 production rates. The highest H2 production rate of 1.4 mmol h-1 g-1 occurs after 8 h heating, corresponding to 2.6% quantum efficiency at 420 nm.",

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Large impact of heating time on physical properties and photocatalytic H₂ production of g-C₃N₄ nanosheets synthesized through urea polymerization in Ar atmosphere. / Yuan, Yu Peng; Xu, Wen Tao; Yin, Li Sha et al.
In: International Journal of Hydrogen Energy, Vol. 38, No. 30, 08.10.2013, p. 13159-13163.

Research output: Contribution to journal › Article › peer-review

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T1 - Large impact of heating time on physical properties and photocatalytic H2 production of g-C3N4 nanosheets synthesized through urea polymerization in Ar atmosphere

AU - Yuan, Yu Peng

AU - Xu, Wen Tao

AU - Yin, Li Sha

AU - Cao, Shao Wen

AU - Liao, Yu Sen

AU - Tng, Yi Qian

AU - Xue, Can

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AB - The effect of heating time on the polymerization processes of urea into g-C3N4 nanosheets was studied in Ar atmosphere. It was found that heating time had a great influence on the crystalline quality, specific surface area (SBET) and photocatalytic H2 production of the obtained g-C3N4 nanosheets. G-C3N4 nanosheets with some degree of disorders in crystal structure were formed within 1 h at 550 C, and these structural disorders maintained after 4 h, however disorders disappeared after extended heating of 6 h. G-C3N4 nanosheets with similar disorders in the crystal structure hold similar SBET and exhibit comparable H2 production rates. The highest H2 production rate of 1.4 mmol h-1 g-1 occurs after 8 h heating, corresponding to 2.6% quantum efficiency at 420 nm.

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