Ultrasound with low intensity assisted the synthesis of nanocrystalline TiO2 without calcination

被引：76
作者：
Ghows, Narjes [1 ]
Entezari, Mohamad H. [1 ]
机构：
[1] Ferdowsi Univ Mashhad, Dept Chem, Mashhad 91775, Iran
来源：
ULTRASONICS SONOCHEMISTRY | 2010年 / 17卷 / 05期
基金：
美国国家科学基金会;
关键词：
Ultrasound; Low intensity; Titanium tetra-isopropoxide; Hydrolysis; TiO2; nanoparticle; Anatase; SONOCHEMICAL SYNTHESIS; PHOTOCATALYTIC ACTIVITY; TEMPERATURE HYDROLYSIS; TITANIUM-DIOXIDE; ANATASE; NANOPARTICLES; PARTICLES; RUTILE; SIZE; CRYSTALLIZATION;
D O I：
10.1016/j.ultsonch.2010.03.010
中图分类号：
O42 [声学];
学科分类号：
070206 ; 082403 ;
摘要：
A novel method has been developed for the preparation of nano-sized TiO2 with anatase phase. Nanoparticles with diameter about 6 nm were prepared at a relatively low temperature (75 degrees C) and short time. The synthesis was carried out by the hydrolysis of titanium tetra-isopropoxide (TTIP) in the presence of water, ethanol, and dispersant under ultrasonic irradiation (500 kHz) at low intensity. The results show that variables such as water/ethanol ratio, irradiation time, and temperature have a great influence on the particle size and crystalline phases of TiO2 nanoparticles. Characterization of the product was carried out by different techniques such as powder X-ray diffraction (XRD), transmission electron microscopy (TEM), high resolution transmission electron microscopy (HRTEM) and UV-vis spectroscopy. (C) 2010 Elsevier B.V. All rights reserved.
引用
收藏
页码：878 / 883
页数：6
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