Effect of alcohol solvents on TiO2 films prepared by sol-gel method

被引：23
|
作者：
Wiranwetchayan, Orawan [1 ]
Promnopas, Surin [1 ]
Thongtem, Titipun [2 ,3 ]
Chaipanich, Arnon [1 ,3 ]
Thongtem, Somchai [1 ,3 ]
机构：
[1] Chiang Mai Univ, Dept Phys & Mat Sci, Fac Sci, Chiang Mai 50200, Thailand
[2] Chiang Mai Univ, Dept Chem, Fac Sci, Chiang Mai 50200, Thailand
[3] Chiang Mai Univ, Mat Sci Res Ctr, Fac Sci, Chiang Mai 50200, Thailand
来源：
SURFACE & COATINGS TECHNOLOGY | 2017年 / 326卷
关键词：
TiO2; films; X-ray diffraction; Electron microscopy; Spectroscopy; THIN-FILMS; 101; FACETS; ANATASE; DYE; GLASS; TEMPERATURE; PERFORMANCE; MORPHOLOGY; NANORODS; EFFICIENCY;
D O I：
10.1016/j.surfcoat.2017.07.068
中图分类号：
TB3 [工程材料学];
学科分类号：
0805 ; 080502 ;
摘要：
' The TiO2 (anatase) films were prepared by sol-gel method using titanium (IV) isopropoxide (TTIP) as a precursor and polyvinylpyrrolidone (PVP) as a polymeric precursor dissolved in different alcohol solvents (methanol, ethanol, isopropanol and 1-butanol) and were heated treatment at 450 degrees C for 1 h. In this research, the alcohol solvents have significant influence on the morphology, crystalline degree and energy band gap of TiO2. The number of carbon, boiling point, dielectric constant and viscosity of alcohol solvents were the main factor influencing the size of TiO2 nanoparticles. The alcohol solvent with higher boiling point and viscosity, and long length of carbon chain can lead to the smaller crystallite size. The number of carbon and viscosity of solvent and crystallite size can play the important role in the agglomeration of particles. The energy band gaps of the films determined by UV-visible spectroscopy were in the 3.00-330 eV range. (C) 2017 Elsevier B.V. All rights reserved.
引用
收藏
页码：310 / 315
页数：6
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