周豪

个人信息Personal Information

副教授

博士生导师

硕士生导师

主要任职:化工海洋与生命学院副院长

性别:男

毕业院校:大连理工大学

学位:博士

所在单位:化工海洋与生命学院

学科:环境工程

办公地点:海洋科学与技术学院 D05 307

联系方式:zhouhao@dlut.edu.cn

电子邮箱:zhouhao@dlut.edu.cn

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Revisiting the preparation of titanium dioxide: aerosol-assisted production of photocatalyst with higher catalytic activity than P25

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论文类型:期刊论文

发表时间:2020-01-01

发表刊物:JOURNAL OF MATERIALS SCIENCE

收录刊物:EI、SCIE

卷号:55

期号:2

页面范围:565-576

ISSN号:0022-2461

摘要:This research revisited the preparation of the pure titanium dioxide. Through the aerosol-assisted technology and our self-made setup, a kind of titanium dioxide with higher activity than commercial product P25 was successfully fabricated, while this aerosol-assisted process takes only about 10 s. By adjusting the operation temperature, the obtained titanium dioxide nanoparticles have different crystalline sizes and phase compositions, which are two major factors determining the catalytic activity of the materials. The results show that the optimum temperature was 600 degrees C, and the AST-600 particle prepared under this condition has the rate constant at 1.49 in the removal of methyl orange, which is 2.36 times that of Degussa P25. Although the AST-600 particle could only be activated by UV light similar to P25, the efficiency of AST-600/g-C3N4 is higher than that of P25/g-C3N4 under the visible condition. Meanwhile, the as-prepared titanium dioxide particles have been thoroughly characterized by TEM, SEM, XRD, PL, XPS, DRS, Raman and nitrogen adsorption in the study. Hence, we prepared a pure titanium dioxide with higher catalytic activity than P25, but the process is still very convenient, low cost and easy to scale up, holding great potential as an alternative to commercial product P25.