Effect of Zn nanoparticles morphology on the photoelectrochemical properties of Zn/TiO2NTs nanocomposites

被引：10

作者：

He, Huichao ^{[1
]}

Xiao, Peng ^{[2
]}

Zhang, Yunhuai ^{[1
]}

Jia, Yichao ^{[1
]}

Yang, Yannan ^{[3
]}

Qiao, Zhengyang ^{[1
]}

机构：

[1] Chongqing Univ, Coll Chem & Chem Engn, Chongqing 400030, Peoples R China

[2] Chongqing Univ, Coll Phys, Chongqing 400030, Peoples R China

[3] Environm Monitoring Stn Ziyang, Ziyang 641300, Peoples R China

来源：

JOURNAL OF ALLOYS AND COMPOUNDS | 2012年 / 522卷

关键词：

Zinc nanoparticles; Titania nanotube; Photoelectrochemical property; Morphology; TIO2 NANOTUBE ARRAYS; PHOTOCATALYTIC ACTIVITY; DOPED TIO2; ELECTROLYTES; FILMS; NANOSTRUCTURES; DEGRADATION; ANODIZATION; DEPOSITION; LAYERS;

D O I：

10.1016/j.jallcom.2012.01.077

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：

Zn nanoparticles with different size and distribution were loaded on/into TiO2 nanotube arrays (Zn/TiO2NTs) via pulsed electrodeposition method. The morphology of Zn/TiO2NTs was studied by field emission scanning electron microscopy (FESEM). The morphology influence of Zn nanoparticles on the photoelectrochemical properties of Zn/TiO2NTs were investigated by UV-vis diffuse reflectance spectrum (UV-vis DRS) and photoelectrochemical measurements. The results showed that Zn/TiO2NTs composites with an average size at 40-50 nm and uniformly distributed of Zn nanoparticles possessed the narrowest band gap, the best photocurrent response, the highest charge carriers density and minimum charge-transfer resistance. These discrepancies in photoelectrochemical properties of different Zn/TiO2NTs samples can be ascribed to the size and distribution effect (morphology effect) of Zn nanoparticles which can influence the transfer and separation of photo-induced carriers generated by TiO2NTs. (C) 2012 Elsevier B. V. All rights reserved.

引用

页码：63 / 68

页数：6

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