In-situ growth of CdS quantum dots on g-C3N4 nanosheets for highly efficient photocatalytic hydrogen generation under visible light irradiation

Shao Wen Cao; Yu Peng Yuan; Jun Fang; Mohammad Mehdi Shahjamali; Freddy Y.C. Boey; James Barber; Say Chye Joachim Loo; Can Xue

doi:10.1016/j.ijhydene.2012.10.116

In-situ growth of CdS quantum dots on g-C₃N₄ nanosheets for highly efficient photocatalytic hydrogen generation under visible light irradiation

Shao Wen Cao, Yu Peng Yuan, Jun Fang, Mohammad Mehdi Shahjamali, Freddy Y.C. Boey, James Barber, Say Chye Joachim Loo^*, Can Xue

^*Corresponding author for this work

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

352 Citations (Scopus)

Abstract

Well dispersed CdS quantum dots were successfully grown in-situ on g-C ₃N₄ nanosheets through a solvothermal method involving dimethyl sulfoxide. The resultant CdS-C₃N₄ nanocomposites exhibit remarkably higher efficiency for photocatalytic hydrogen evolution under visible light irradiation as compared to pure g-C₃N₄. The optimal composite with 12 wt% CdS showed a hydrogen evolution rate of 4.494 mmol h^-1 g^-1, which is more than 115 times higher than that of pure g-C₃N₄. The enhanced photocatalytic activity induced by the in-situ grown CdS quantum dots is attributed to the interfacial transfer of photogenerated electrons and holes between g-C₃N ₄ and CdS, which leads to effective charge separation on both parts.

Original language	English
Pages (from-to)	1258-1266
Number of pages	9
Journal	International Journal of Hydrogen Energy
Volume	38
Issue number	3
DOIs	https://doi.org/10.1016/j.ijhydene.2012.10.116
Publication status	Published - Feb 6 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

Carbon nitride
Charge transfer
Hydrogen production
Photocatalyst
Solar fuels
Water splitting

UN SDGs

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

Access to Document

10.1016/j.ijhydene.2012.10.116

Cite this

Cao, S. W., Yuan, Y. P., Fang, J., Shahjamali, M. M., Boey, F. Y. C., Barber, J., Joachim Loo, S. C., & Xue, C. (2013). In-situ growth of CdS quantum dots on g-C₃N₄ nanosheets for highly efficient photocatalytic hydrogen generation under visible light irradiation. International Journal of Hydrogen Energy, 38(3), 1258-1266. https://doi.org/10.1016/j.ijhydene.2012.10.116

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title = "In-situ growth of CdS quantum dots on g-C3N4 nanosheets for highly efficient photocatalytic hydrogen generation under visible light irradiation",

abstract = "Well dispersed CdS quantum dots were successfully grown in-situ on g-C 3N4 nanosheets through a solvothermal method involving dimethyl sulfoxide. The resultant CdS-C3N4 nanocomposites exhibit remarkably higher efficiency for photocatalytic hydrogen evolution under visible light irradiation as compared to pure g-C3N4. The optimal composite with 12 wt% CdS showed a hydrogen evolution rate of 4.494 mmol h-1 g-1, which is more than 115 times higher than that of pure g-C3N4. The enhanced photocatalytic activity induced by the in-situ grown CdS quantum dots is attributed to the interfacial transfer of photogenerated electrons and holes between g-C3N 4 and CdS, which leads to effective charge separation on both parts.",

keywords = "Carbon nitride, Charge transfer, Hydrogen production, Photocatalyst, Solar fuels, Water splitting",

author = "Cao, {Shao Wen} and Yuan, {Yu Peng} and Jun Fang and Shahjamali, {Mohammad Mehdi} and Boey, {Freddy Y.C.} and James Barber and {Joachim Loo}, {Say Chye} and Can Xue",

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AU - Cao, Shao Wen

AU - Yuan, Yu Peng

AU - Fang, Jun

AU - Shahjamali, Mohammad Mehdi

AU - Boey, Freddy Y.C.

AU - Barber, James

AU - Joachim Loo, Say Chye

AU - Xue, Can

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AB - Well dispersed CdS quantum dots were successfully grown in-situ on g-C 3N4 nanosheets through a solvothermal method involving dimethyl sulfoxide. The resultant CdS-C3N4 nanocomposites exhibit remarkably higher efficiency for photocatalytic hydrogen evolution under visible light irradiation as compared to pure g-C3N4. The optimal composite with 12 wt% CdS showed a hydrogen evolution rate of 4.494 mmol h-1 g-1, which is more than 115 times higher than that of pure g-C3N4. The enhanced photocatalytic activity induced by the in-situ grown CdS quantum dots is attributed to the interfacial transfer of photogenerated electrons and holes between g-C3N 4 and CdS, which leads to effective charge separation on both parts.

KW - Carbon nitride

KW - Charge transfer

KW - Hydrogen production

KW - Photocatalyst

KW - Solar fuels

KW - Water splitting

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