Preparation and Visible-light Photocatalytic Properties of Polyoxometalate-doped Anatase Nanocrystal Na4W10O32/TiO2 with Mesoporous Structure

Abstract

Abstract: A simple and rapid process has been developed for the preparation of mesoporous anatase TiO₂ crystalline particles coupled by homogeneously dispersed Na₄W₁₀O₃₂ at a lower temperature ( 200 ℃ ) by combining sol-gel and programmed temperature hydrothermal methods. The composite,Na₄W₁₀O₃₂ /TiO₂,has a uniform mesopore distribution with the average pore diameter of 3.8 nm,and its BET surface area is 178.4 m²/g. The average size of the composite is below 10 nm. This new photocatalyst exhibited a visible-light photocatalytic activity to decompose para -thion-methyl.

Key words: Porous materials, Visible-light photocatalysis, Polyoxometalate, Anatase, Organophosphorus pesticide

CLC Number:

O647

TrendMD:

XU Yun-Ting, LI Li, YU Xiao-Dan, GUO Yi-Hang . Preparation and Visible-light Photocatalytic Properties of Polyoxometalate-doped Anatase Nanocrystal Na₄W₁₀O₃₂/TiO₂ with Mesoporous Structure[J]. Chem. J. Chinese Universities, 2004, 25(8): 1549.

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Preparation and Visible-light Photocatalytic Properties of Polyoxometalate-doped Anatase Nanocrystal Na₄W₁₀O₃₂/TiO₂ with Mesoporous Structure

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