Synthesis of TiO_2 nanoparticles by propane/air turbulent flame CVD process

查看全文 作　　者：Hongyong Xie Guilan Gao Zhen Tian Naici Bing Lijun [1]Wang

机构地区：[1]School of Urban Development and Environmental Engineering, Shanghai Second Polytechnic University, 2360 Jin Hal Road, Pudong, Shanghai 201209, China

出　　处：《Particuology》索引2009年第7卷第3期,共7页

摘　　要：Synthesis of TiO2 nanoparticles by the oxidation of titanium tetrachloride (TiCl4) in high-strength propane/air turbulent flame is investigated tentatively for mass production of TiO2 nanoparticles. Effects of reactor heat flux varying from 247 to 627 kJ/m2 s, initial TiO2 number density from 2×1020 to 1×1021 m-3, and apparent residence time of TiO2 nanoparticles in reactor from 0.06 to 0.9 s, on particle morphology, phase composition, UV absorption and photoluminescence (PL) spectra are studied. The TiO2 nanoparti- cles synthesized, with mean size of 30-80 nm and rutile mass fraction from 0.155 up to 0.575, exhibited a strong PL signal at the wavelength of 370-450 nm, with a wide peak signal at 400-420 nm, reflecting significant oxygen vacancies on the surface of the TiO2 nanoparticles. 关键词：二氧化钛纳米粒子湍流火焰沉积过程化学气相合成 TIO2纳米粒子空气丙烷

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Synthesis of TiO_2 nanoparticles by propane/air turbulent flame CVD process

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