Synthesis of CdS Nanorods by an Ethylenediamine Assisted Hydrothermal Method for Photocatalytic Hydrogen Evolution

被引：303

作者：

Li, Yuexiang ^{[1
]}

Hu, Yuanfang ^{[1
]}

Peng, Shaoqin ^{[1
]}

Lu, Gongxuan ^{[2
]}

Li, Shuben ^{[2
]}

机构：

[1] Nanchang Univ, Dept Chem, Nanchang 330031, Peoples R China

[2] Chinese Acad Sci, Lanzhou Inst Chem Phys, State Key Lab Oxo Synth & Select Oxidat, Lanzhou 730000, Peoples R China

来源：

JOURNAL OF PHYSICAL CHEMISTRY C | 2009年 / 113卷 / 21期

关键词：

SOLVOTHERMAL SYNTHESIS; CADMIUM-SULFIDE; GROWTH; NANOWIRES; WATER; NANOSTRUCTURES; MECHANISMS; ROUTE; TIO2;

D O I：

10.1021/jp901505j

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：

US nanocrystals were synthesized by a hydrothermal method using ethylenediamine (en) as the template agent and coordination agent, and characterized by transmission electron microscopy (TEM), high-resolution transmission electron microscopy (HRTEM), X-ray diffraction (XRD), BET, and UV-vis absorption spectroscopic techniques. Their photoactivity was evaluated by hydrogen evolution from aqueous solution containing formic acid as a hole scavenger under visible light (lambda >= 420 nm) irradiation. The nanocrystals display rodlike and granular shapes, and their amount and morphology depend on the hydrothermal temperature and the added content of en. Photoactivity of the nanorods is higher than that of the nanograins. The effect of deposited Pt as cocatalyst on photoactivity for hydrogen evolution has been investigated. Pt can be dispersed highly on CdS so that the Pt content for effective hydrogen evolution is very low. 0.050 wt % Pt-loaded CdS shows the highest activity for hydrogen evolution under visible light irradiation, and the apparent quantum yield amounts to 13.9%. A possible mechanism was discussed.

引用

页码：9352 / 9358

页数：7

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