Microstructure and photocatalytic activity of titanium dioxide nanoparticles

doi:10.1088/1674-1056/21/9/098102

中国物理B ›› 2012, Vol. 21 ›› Issue (9): 98102-098102.doi: 10.1088/1674-1056/21/9/098102

• INTERDISCIPLINARY PHYSICS AND RELATED AREAS OF SCIENCE AND TECHNOLOGY • 上一篇下一篇

Microstructure and photocatalytic activity of titanium dioxide nanoparticles

李春艳^a, 王江彬^b, 王乙潜^a

a The Cultivation Base for State Key Laboratory, Qingdao University, Qingdao 266071, China;
b Laiyang Zixilai Environmental Protection Technology Co. Ltd., North of Toll Station, Laiyang 265229, China

收稿日期:2012-01-13 修回日期:2012-03-16 出版日期:2012-08-01 发布日期:2012-08-01
基金资助:
Project supported by the National Basic Research Program of China (Grant No. 2012CB722705), the Shandong Provincial Natural Science Foundation for Outstanding Young Scientists, China (Grant No. JQ201002), and the Shandong Provincial Scientific Research Award for Outstanding Young and Middle-Aged Scientists, China (Grant No. BS2009CL0005).

Microstructure and photocatalytic activity of titanium dioxide nanoparticles

Li Chun-Yan (李春艳)^a, Wang Jiang-Bin (王江彬)^b, Wang Yi-Qian (王乙潜)^a

a The Cultivation Base for State Key Laboratory, Qingdao University, Qingdao 266071, China;
b Laiyang Zixilai Environmental Protection Technology Co. Ltd., North of Toll Station, Laiyang 265229, China

Received:2012-01-13 Revised:2012-03-16 Online:2012-08-01 Published:2012-08-01
Contact: Wang Yi-Qian E-mail:yqwang@qdu.edu.cn
Supported by:
Project supported by the National Basic Research Program of China (Grant No. 2012CB722705), the Shandong Provincial Natural Science Foundation for Outstanding Young Scientists, China (Grant No. JQ201002), and the Shandong Provincial Scientific Research Award for Outstanding Young and Middle-Aged Scientists, China (Grant No. BS2009CL0005).

摘要/Abstract

摘要： Titanium dioxide nanoparticles with an average diameter of about 10 nm are fabricated using a sintering method. The degradation of methyl orange indicates that the photocatalytic efficiency is greatly enhanced, which is measured to be 62.81%. The transmission electron microscopy is used to investigate the microstructure of TiO₂ nanoparticles in order to correlate with their photocatalytic properties. High-resolution transmission electron microscopy examinations show that all the nanoparticles belong to the anatase phase, and pure edge dislocations exist in some nanoparticles. The great enhancement of photocatalytic efficiency is attributed to two factors, the quantum size effect and the surface defects in the nanoparticles.

关键词: titanium dioxide nanoparticles, high-resolution transmission electron microscopy, photocatalytic activity

Abstract: Titanium dioxide nanoparticles with an average diameter of about 10 nm are fabricated using a sintering method. The degradation of methyl orange indicates that the photocatalytic efficiency is greatly enhanced, which is measured to be 62.81%. The transmission electron microscopy is used to investigate the microstructure of TiO₂ nanoparticles in order to correlate with their photocatalytic properties. High-resolution transmission electron microscopy examinations show that all the nanoparticles belong to the anatase phase, and pure edge dislocations exist in some nanoparticles. The great enhancement of photocatalytic efficiency is attributed to two factors, the quantum size effect and the surface defects in the nanoparticles.

Key words: titanium dioxide nanoparticles, high-resolution transmission electron microscopy, photocatalytic activity

中图分类号: (Nanocrystalline materials)

81.07.Bc

68.37.Og (High-resolution transmission electron microscopy (HRTEM)) 84.60.Jt (Photoelectric conversion)

李春艳, 王江彬, 王乙潜. Microstructure and photocatalytic activity of titanium dioxide nanoparticles[J]. 中国物理B, 2012, 21(9): 98102-098102.

Li Chun-Yan (李春艳), Wang Jiang-Bin (王江彬), Wang Yi-Qian (王乙潜). Microstructure and photocatalytic activity of titanium dioxide nanoparticles[J]. Chin. Phys. B, 2012, 21(9): 98102-098102.

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Microstructure and photocatalytic activity of titanium dioxide nanoparticles

Microstructure and photocatalytic activity of titanium dioxide nanoparticles

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