Transactions of Nonferrous Metals Society of China The Chinese Journal of Nonferrous Metals

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中国有色金属学报(英文版)

Transactions of Nonferrous Metals Society of China

Vol. 20    No. 12    December 2010

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Fabrication and photocatalytical properties of flower-like TiO2 nanostructures
LIU Min(刘 敏), LU Wei-ming(鲁伟明), ZHAO Lei(赵 雷), ZHOU Chun-lan(周春兰),
 LI Hai-ling(李海玲), WANG Wen-jing(王文静)

Key Laboratory of Solar Thermal Energy and Photovoltaic System, Institute of Electrical Engineering,
Chinese Academy of Sciences, Beijing 100190, China

Abstract:Three-dimensional (3D) flower-like anatase TiO2 nanostructures and flower-like titanate nanostructures were successfully synthesized via hydrothermal synthesis followed by post-treatment from titanium powder. The flower-like anatase TiO2 nanostructures were characterized in detail with scanning electron microscopy (SEM), X-ray diffraction (XRD), UV-vis spectrum and nitrogen adsorption-desorption measurement, respectively. It is found that the flower-like TiO2 nanostructures have a high specific surface area and a large light-harvesting efficiency. The photocatalytical activity of the flower-like anatase TiO2 nanostructures was determined by degradation of methylene blue in aqueous solution, and was compared with commercial P25 titania. It is revealed that the photocatalytical activity of the flower-like anatase TiO2 nanostructures is enhanced a lot. The apparent rate constant of the flower-like anatase TiO2 nanostructures is almost 2 times that of P25 titania.

 

Key words: Ti powder; hydrothermal synthesis; flower-like; TiO2; photocatalysis

ISSN 1004-0609
CN 43-1238/TG
CODEN: ZYJXFK

ISSN 1003-6326
CN 43-1239/TG
CODEN: TNMCEW

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