Reduced graphene oxide and CdTe nanoparticles co-decorated TiO2 nanotube array as a visible light photocatalyst

被引：22
|
作者：
Liu, Meijun [1 ]
He, Lei [1 ]
Liu, Xuanneng [1 ]
Liu, Chengbin [1 ]
Luo, Shenglian [1 ]
机构：
[1] Hunan Univ, State Key Lab Chemo Biosensing & Chemometr, Changsha 410082, Hunan, Peoples R China
来源：
JOURNAL OF MATERIALS SCIENCE | 2014年 / 49卷 / 05期
基金：
中国国家自然科学基金;
关键词：
SOLAR-CELLS; THIN-FILM; DEGRADATION; WATER; FABRICATION; COMPOSITE; ACID; PHOTORESPONSE; ARCHITECTURE; PERFORMANCE;
D O I：
10.1007/s10853-013-7922-4
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
TiO2 nanotube array (TiO2 NT) was co-decorated by reduced graphene oxide (RGO) and CdTe nanoparticles (NPs) through a simple one-step electrodeposition process. RGO film was formed on the top surface of TiO2 NT and CdTe NPs homogeneously dispersed within the RGO sheets and on the inner/outer walls of TiO2 NT. Resulting from the synergetic effect of RGO and CdTe, the photocatalytic activity of the ternary RGO/CdTe-TiO2 NT photocatalyst far exceeded those of bare TiO2 NT, RGO-TiO2 NT, and CdTe-TiO2 NT photocatalysts in the degradation of herbicide 2,4-dichlorophenoxyacetic acid (2,4-D) under simulated solar light or visible light irradiation. After 180-min UV-Vis (or visible light) irradiation, almost 100 % (or 96 %) 2,4-D removal efficiency was achieved on RGO/CdTe-TiO2 NT, much higher than 42 % (or 2 %) on bare TiO2 NT, 58 % (or 10 %) on RGO-TiO2 NT, and 52 % (or 41 %) on CdTe-TiO2 NT. This study will inspire better design of advanced photocatalysts with high visible-light photocatalytic activity.
引用
收藏
页码：2263 / 2269
页数：7
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