Heating-sol-gel template process for the growth of TiO2 nanorods with rutile and anatase structure
Heating-sol-gel template process for the growth of TiO2 nanorods with rutile and anatase structure
复制标题
DOI：
10.1016/j.apsusc.2004.05.201
复制
发表时间：
2004-11-15
影响因子：
6.7
通讯作者：
Tanemura, M
中科院分区：
文献类型：
--
作者：
Miao, L;Tanemura, S;Tanemura, M
采用加热-溶胶-凝胶模板法分别成功制备了由金红石纳米颗粒和锐钛矿纳米颗粒组成的致密纳米棒。纳米棒的直径为100-300 nm，长度为几微米，由模板的孔径大小控制。讨论了金红石纳米棒和锐钛矿纳米棒的制备工艺和微观结构的异同。TEM图像显示锐钛矿纳米棒是许多直径约为10 nm的模糊多边形纳米颗粒的聚集体，而金红石纳米棒是直径为10-30 nm的不规则八边形和/或六边形纳米颗粒的聚集体。XRD、ED和HRTEM晶格图证实，通过加热-溶胶-凝胶法制备的纳米棒由许多单个纳米颗粒很好地组装在一起。金红石纳米棒中的纳米颗粒比锐钛矿纳米棒中的纳米颗粒大，这可能与热处理工艺不同有关。(C) 2004 Elsevier B.V.版权所有
Densely assembled nanorods consist of the nanoparticles of rutile and those of anatase have been fabricated successfully by a heating-sol-gel template process, respectively. The size of nanorods varies as a diameter of 100-300 nm and a length of several micrometers, which are controllable by the pore size of the template. The similarities and/or differences of the fabricated process and microstructure for rutile and anatase nanorods were discussed. TEM image revealed that anatase nanorods are the aggregates of many indistinct polygonal nanoparticles up to similar to10 nm in diameter, while rutile nanorods are the aggregates of irregular octagon and/or hexagon nanoparticles in 10-30 nm diameter. XRD, ED and HRTEM lattice image confirmed the nanorods fabricated by the heating-sol-gel process are well assembled by many individual nanoparticles. The nanoparticles in rutile nanorods were larger than those in anatase nanorods possibly due to the different heat-treatment procedure. (C) 2004 Elsevier B.V. All rights reserved.