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

被引：332

作者：

Cao, Shao-Wen ^{[1
]}

Yuan, Yu-Peng ^{[1
,2
]}

Fang, Jun ^{[1
]}

Shahjamali, Mohammad Mehdi ^{[1
]}

Boey, Freddy Y. C. ^{[1
]}

Barber, James ^{[1
,3
]}

Loo, Say Chye Joachim ^{[1
]}

Xue, Can ^{[1
]}

机构：

[1] Nanyang Technol Univ, Sch Mat Sci & Engn, Solar Fuels Lab, Singapore 639798, Singapore

[2] Anhui Univ, Sch Chem & Chem Engn, Lab Adv Porous Mat, Hefei 230039, Peoples R China

[3] Univ London Imperial Coll Sci Technol & Med, Div Mol Biosci, London SW7 2AZ, England

来源：

INTERNATIONAL JOURNAL OF HYDROGEN ENERGY | 2013年 / 38卷 / 03期

基金：

中国国家自然科学基金;

关键词：

Solar fuels; Hydrogen production; Water splitting; Carbon nitride; Photocatalyst; Charge transfer; GRAPHITIC CARBON NITRIDE; COMPOSITE PHOTOCATALYST; OPTICAL-PROPERTIES; H-2; EVOLUTION; NANOCRYSTALS; ENHANCEMENT; WATER; NANOSTRUCTURES; NANOCOMPOSITES; HYBRID;

D O I：

10.1016/j.ijhydene.2012.10.116

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

Well dispersed CdS quantum dots were successfully grown in-situ on g-C3N4 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 photo-generated electrons and holes between g-C3N4 and CdS, which leads to effective charge separation on both parts. Copyright (C) 2012, Hydrogen Energy Publications, LLC. Published by Elsevier Ltd. All rights reserved.

引用

页码：1258 / 1266

页数：9

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