文献类型：期刊文献

中文题名：Aerosol Spray Pyrolysis Synthesis of Porous Anatase TiO_2 Microspheres with Tailored Photocatalytic Activity

英文题名：Aerosol Spray Pyrolysis Synthesis of Porous Anatase TiO_2 Microspheres with Tailored Photocatalytic Activity

作者：Wen-Ge Li[1];Yan-Jie Hu[1];Hao Jiang[1];Chun-Zhong Li[1]

机构：[1]Key Laboratory for Ultrafine Materials of the Ministry of Education, School of Materials Science and Engineering,East China University of Science and Technology

年份：2019

卷号：32

期号：3

起止页码：286

中文期刊名：Acta Metallurgica Sinica(English Letters)

外文期刊名：金属学报（英文版）

收录：CSTPCD;;Scopus;CSCD:【CSCD2019_2020】；

基金：supported by the National Natural Science Foundation of China (Nos. 21236003, 21506125, 91534202 and 91534122);the Basic Research Program of Shanghai (14JC1490700);the China Postdoctoral Science Foundation (2014M561497 and 2014M560307);the Fundamental Research Funds for the Central Universities

语种：英文

中文关键词：Ultrasonic;spray;pyrolysis;TiO2;microspheres;Porous;structure;Photodegradation

外文关键词：Ultrasonic spray pyrolysis;TiO_2 microspheres;Porous structure;Photodegradation

摘要：Porous titanium dioxide(TiO_2) microspheres(MS) were prepared by a facile ultrasonic spray pyrolysis process with commercial colloidal silica as a sacrificial template. The morphology structure, Brunauer–Emmett–Teller surface areas and pore size distribution of TiO_2 microspheres were studied by changing the content and diameter of the silica template in detail. These porous micro-sized MS are composed of anatase TiO_2 nanocrystallites of 5–10 nm and have unique bimodal mesopores. The largest specific surface area of 112.3 m^2/g has been achieved using 60 wt% 20 nm silica as a template.When used as photocatalysts, the best photocatalytic activity of the as-prepared porous MS is comparable to commercial P25 nanopowders. Moreover, the micro-size and tailored properties from the design that appear during the ultrasonic spray pyrolysis process give these porous MS a promising application in photocatalytic reaction.
Porous titanium dioxide(TiO_2) microspheres(MS) were prepared by a facile ultrasonic spray pyrolysis process with commercial colloidal silica as a sacrificial template. The morphology structure, Brunauer–Emmett–Teller surface areas and pore size distribution of TiO_2 microspheres were studied by changing the content and diameter of the silica template in detail. These porous micro-sized MS are composed of anatase TiO_2 nanocrystallites of 5–10 nm and have unique bimodal mesopores. The largest specific surface area of 112.3 m^2/g has been achieved using 60 wt% 20 nm silica as a template.When used as photocatalysts, the best photocatalytic activity of the as-prepared porous MS is comparable to commercial P25 nanopowders. Moreover, the micro-size and tailored properties from the design that appear during the ultrasonic spray pyrolysis process give these porous MS a promising application in photocatalytic reaction.