文献类型：期刊文献

中文题名：TiO_2纳米棒复合材料的制备及生长过程研究

英文题名：Preparation and Growth Process of TiO_2 Nanorod Composites

作者：严雯静[1];宣绍峰[1,2];吴秋芳[1,2]

机构：[1]华东理工大学超细粉末国家工程研究中心,上海200237;[2]上海华明高技术(集团)有限公司,上海200231

年份：2015

卷号：44

期号：11

起止页码：2882

中文期刊名：稀有金属材料与工程

外文期刊名：Rare Metal Materials and Engineering

收录：CSTPCD;;EI(收录号：20155201736595);Scopus;WOS:【SCI-EXPANDED(收录号:WOS:000365830000056)】；北大核心:【北大核心2014】；CSCD:【CSCD2015_2016】；

语种：中文

中文关键词：二氧化钛;纳米棒;粉煤灰空心微球;乙醇/水混合溶剂热法

外文关键词：TiO2;nanorod;flyash hollow microsphere;C2H5OH/H2O mixed solvothermal method

摘要：采用乙醇/水混合溶剂热法,制备以粉煤灰空心微球为基底的TiO_2纳米棒复合材料,研究了不同制备条件下纳米棒的形貌特点,分析其生长过程。结果表明:TiO_2纳米棒为金红石相,其形貌和尺寸与乙醇溶剂、钛源浓度、反应时间密切相关,适量的乙醇溶剂,使纳米棒结晶效果变好,四方棒状形貌明显,随着钛源浓度和反应时间的增加,TiO_2纳米棒尺寸增大;TiO_2纳米棒复合材料对罗丹明B具有较好的光催化降解效果。
TiO2 nanorod composites were prepared on the flyash hollow microsphere substrates by a C2H5OH/H2O mixed solvothermal method.The morphology of TiO2 nanorod with different preparation conditions and the growth process was studied.The results reveal that the crystal form of TiO2 nanorods is rutile phase.The morphology and the size of TiO2 nanorod depend on the volume ratio of C2H5OH/H2O,titanium precursor concentration and reaction time.The crystallinity of TiO2 nanorod increases with appropriate ethanol,and also the tetragonal rodlike crystal morphology becomes distinct.The size of TiO2 nanorods gradually increases with the increase of concentration and reaction time.In addition,TiO2 nanorod composites show a better photocatalytic activity in degrading rhodamine B.