Preparation of B-Doped TiO2 Nanoparticles and Their Photocatalytic Activities

doi:10.7517/j.issn.1674-0475.2010.04.287

Abstract

Abstract: Using acetic acid as catalyzer and chelate,a sort of monodispersed,ellipsoidal and hollow B doped TiO₂ nanoparticles is successfully prepared by Sol-gel method,which is based on an improved Sol-gel technique using boric acid triethylester,by controlling the hydrolysis of these precursors with an acetic acid.The TiO₂ nanoparticles prepared were characterized by means of TG-DTA、XRD、XPS、UV-Vis、TEM and BET.The photocatalytic activity of the elaborated powders was studied following the degradation of Rhodamine B.The results showed that the photocatalytic activity of B doped TiO₂ prepared by Sol-gel method is much higher than that of pure TiO₂ particles.The most efficient degradation of Rhodamine B was found with TiO₂ particles doped with 20% B in mole fraction and calcined at 450 ℃.Also the reason for the enhancement of the photocatalytic activity of TiO₂ by B doping was discussed.

Key words: TiO₂, Boron, doping, sol-gel method, photocatalytic activity

CLC Number:

WANG Ying-ling, XIE You-hai, YUAN Jian-mei, ZHOU Qing-xiang, LIU Guo-guang. Preparation of B-Doped TiO₂ Nanoparticles and Their Photocatalytic Activities[J]. Imaging Science and Photochemistry, 2010, 28(4): 287-295.

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Preparation of B-Doped TiO₂ Nanoparticles and Their Photocatalytic Activities

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