[1]张茜芸,仲兆平,姚杰.超声波强化均匀沉淀法制备纳米TiO2[J].东南大学学报(自然科学版),2012,42(4):680-684.[doi:10.3969/j.issn.1001-0505.2012.04.020]
　Zhang Xiyun,Zhong Zhaoping,Yao Jie.Preparation of nano-TiO2 by homogeneous precipitation intensified with ultrasound[J].Journal of Southeast University (Natural Science Edition),2012,42(4):680-684.[doi:10.3969/j.issn.1001-0505.2012.04.020]
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超声波强化均匀沉淀法制备纳米TiO2()
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《东南大学学报(自然科学版)》[ISSN:1001-0505/CN:32-1178/N]

卷:
42
期数:
2012年第4期
页码:
680-684
栏目:
环境科学与工程
出版日期:
2012-07-20

文章信息/Info

Title:
Preparation of nano-TiO2 by homogeneous precipitation intensified with ultrasound
作者:
张茜芸;  仲兆平;  姚杰
东南大学能源热转换及其过程测控教育部重点实验室, 南京 210096
Author(s):
Zhang Xiyun;  Zhong Zhaoping;  Yao Jie
Key Laboratory of Energy Thermal Conversion and Control of Ministry of Education, Southeast University, Nanjing 210096, China
关键词:
SCR催化剂;  超声波;  均匀沉淀;  纳米TiO2
Keywords:
selective catalytic reduction(SCR)catalyst;  ultrasound;  homogeneous precipitation;  nano-TiO2
分类号:
X701
DOI:
10.3969/j.issn.1001-0505.2012.04.020
摘要:
为了改善纳米TiO2的分散性能和细化其颗粒尺寸,采用超声波强化均匀沉淀法制备纳米TiO2.首先以工业级硫酸氧钛为原料,用均匀沉淀法制备纳米TiO2,通过对比试验来反映超声波对于制备纳米TiO2的影响.然后采用BET比表面积与孔隙度分析、扫描电子显微镜、透射电子显微镜、X射线衍射分析研究了超声波的强化作用.试验结果表明:超声波的强化作用具有明显的细化颗粒尺寸的作用; 能增加纳米TiO2的比表面积、孔容积与孔径; 能改善分散度,使颗粒粒径分布范围变窄.通过均匀沉淀过程能直接获得纯锐钛型纳米TiO2,而无需经过特定温度的煅烧定型,超声波作用对产物晶型无影响.
Abstract:
In order to improve the dispersion of nano-TiO2 and to reduce the particle size, nano-TiO2 were synthesized by homogeneous precipitation intensified with ultrasound. Industrial grade TiOSO4 was used as raw material to synthesize nano-TiO2 by homogeneous precipitation. The effect of ultrasound on the fabrication of nano-TiO2 was studied by comparison tests. The characterization of nano-TiO2 was investigated by the BET surface area and porosity analysis, scanning electron microscope, transmission electron microscope, and X-ray diffraction analysis. The results show that the role of ultrasound can reduce the particle size significantly. Also it can increase the surface area, pore volume and pore size of nano-TiO2, and improve the dispersion properties and particle size distribution. Anatase nano-TiO2 can be obtained directly by the homogeneous precipitation process without specific calcine steps. And ultrasonic treatment does not change anatase crystal of the nano-TiO2 samples.

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备注/Memo

备注/Memo:
作者简介: 张茜芸(1989—),女,硕士生; 仲兆平(联系人),男,博士,教授,博士生导师, zzhong@seu.edu.cn.
基金项目: 国家高技术研究发展计划(863计划)资助项目(2008AA05Z303)、江苏省科技支撑计划资助项目(BE2010184)、江苏省环保科研课题资助项目(201031).
引文格式: 张茜芸,仲兆平,姚杰.超声波强化均匀沉淀法制备纳米TiO2[J].东南大学学报:自然科学版,2012,42(4):680-684. [doi:10.3969/j.issn.1001-0505.2012.04.020]
更新日期/Last Update: 2012-07-20