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铁道科学与工程学报

JOURNAL OF RAILWAY SCIENCE AND ENGINEERING

Vol. 19    Special 3    December 2009

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Structure and property of mesoporous molybdenum/carbon
co-doped brookite titania
LÜ Xiao-meng(吕晓萌)1, LIU Jun(刘 军)2, ZHANG Hui(张 辉)1, DING Jian-lin(丁建林)1, XIE Ji-min(谢吉民)1

1. School of Chemistry and Chemical Engineering, Jiangsu University, Zhenjiang 212013, China;
2. School of Environment, Jiangsu University, Zhenjiang 212013, China

Abstract:Phase-pure brookite TiO2 was prepared by hydrothermal method using Ti(SO4)2 as precursor. From the point of energy compensation, molybdenum/carbon co-doped brookite TiO2 photocatalysts were prepared in the presence of dissolved glucose and ammonium molybdate. The samples were characterized by thermoanalysis, UV-vis diffuse reflectance spectroscopy (UV-vis/DRS), X-ray diffractometry (XRD), nitrogen adsorption and transmission electron microscopy (TEM). The photocatalytic activities of the as-prepared samples were tested on the photodecoloration of rhodamine B (Rh B) under simulated solar-light irradiation. The wavelength of light adsorption of co-doped samples is red shifted and the intensity of light adsorption increases highly in visible-light region compared with the single-doped samples. Thermal stability of brookite phase is improved greatly after co-doping, indicating that the co-doping facilitates the phase stabilization. Co-doping can improve the photodecoloration activity of composite brookite TiO2.

 

Key words: co-doping; brookite titania; photocatalysis

ISSN 1672-7029
CN 43-1423/U

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