Silver nanoparticles embedded titania nanotube with tunable blue light band gap

被引：7
|
作者：
Wang, Wei-Lin [1 ]
Yang, Chung-Sung [1 ]
机构：
[1] Natl Chia Yi Univ, Dept Appl Chem, Chiayi 60004, Taiwan
来源：
MATERIALS CHEMISTRY AND PHYSICS | 2016年 / 175卷
关键词：
Crystal growth; Photoemission; Electron microscopy; X-ray photo-emission spectroscopy (XPS); Nanostructures; PHOTOCATALYST; NANOFIBERS; NANOWIRES; OXIDE;
D O I：
10.1016/j.matchemphys.2016.03.005
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
Silver nanoparticles embedded titania nanotube (SET) have been successfully prepared by titania nanotubes and silver nanoparticles via a template-free reaction. Powder X-ray diffraction (P-XRD) spectra and Fourier transform infrared (FT-IR) spectra show that the charge of silver atoms maintains neutral in the formation of silver nanoparticles. The Ag atom of Ag nanoparticles and the oxygen atom of TiO2 possess a chemical bonding with an ionic character rather than a covalent character. The quantitative microanalysis data collected from X-ray photo-emission (XPS) spectra indicate that the ratio of Ag/Ti in SET is 15.2 +/- 2.7%. The cut-off band gap of SET is adjustable from 420 nm (Ag/Ti = 12.5%) to 430 nm (Ag/Ti = 17.8%). (C) 2016 Elsevier B.V. All rights reserved.
引用
收藏
页码：146 / 150
页数：5
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