The fabrication of SnSe/Ag nanoparticles on TiO2 nanotubes
The fabrication of SnSe/Ag nanoparticles on TiO2 nanotubes
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TiO2 纳米管上 SnSe/Ag 纳米粒子的制备
DOI：
10.1016/j.mseb.2012.10.006
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发表时间：
2013-01-01
影响因子：
3.6
通讯作者：
Yang, X. J.
中科院分区：
文献类型：
--
作者：
Ma, L. L.;Cui, Z. D.;Yang, X. J.
采用脉冲电化学沉积法和多元醇化学沉积法分别在TiO2纳米管（NT）上沉积了SnSe和Ag纳米粒子。扫描电镜（SEM）形态观察表明，SnSe的平均尺寸约为30 nm， Ag的平均尺寸约为5 nm。透射电子显微镜（TEM）和选择区域电子衍射（SAED）检测表明，银纳米颗粒具有良好的结晶度。然而，SnSe纳米颗粒是无定形的，在300℃的大气中退火后变成结晶。用紫外-可见漫反射光谱（DRS）评价了SnSe/Ag-TiO2 NT的光催化性能。结果表明，SnSe和Ag纳米粒子的沉积增加了可见光波长范围内的光吸收强度，这表明SnSe/Ag- tio2 NT是一种很有前途的光催化三元杂化材料。(C) 2012 Elsevier B.V.版权所有
SnSe and silver (Ag) nanoparticles were sequentially deposited on TiO2 nanotube (NT) by pulsed electrochemical deposition and polyol chemistry process, respectively. The morphological observation under scanning electron microscope (SEM) showed that the average size of SnSe was about 30 nm and the Ag was about 5 nm. Transmission electron microscopy (TEM) combined with selected area electron diffraction (SAED) examination indicated that Ag nanoparticles exhibited a well-defined crystallinity. However, SnSe nanoparticles were amorphous and they turned to crystalline after being annealed at 300 degrees C in the atmosphere. The photocatalytic behavior of SnSe/Ag-TiO2 NT was evaluated by UV-vis diffuse reflectance spectra (DRS). The results showed that the deposition of SnSe and Ag nanoparticles increased light absorption intensity in the wavelength range of visible light, which implied that the SnSe/Ag-TiO2 NT is a promising ternary hybrid material in photocatalysis. (C) 2012 Elsevier B.V. All rights reserved.