Studies on Photocatalytic Oxidation Reaction of SO2 over TiO2

Abstract

Abstract: The influence of the baked temperature for TiO₂ ultrafine particles on the photocatalytic oxidation reaction of SO₂ was investigated. The photocatalytic activity of TiO₂ baked at 320 ℃ is higher than that at other temperatures(480 ℃, 550 ℃). It may be explained by the surface state of TiO₂, increasing the content of surface hydroxyl is helpful to enhance the photocatalytic activity. According to the experimental results, the first order kinetic reaction and the mechanism of the reaction were suggested, also the rate constants and half-life time were reported.

Key words: TiO₂, SO₂, Photocatalytic oxidation reaction

CLC Number:

O643.1

TrendMD:

SHANG Jing, XU Zi-Li, DU Yao-Guo, GUO Hai-Chen . Studies on Photocatalytic Oxidation Reaction of SO₂ over TiO₂[J]. Chem. J. Chinese Universities, 2000, 21(8): 1299.

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Studies on Photocatalytic Oxidation Reaction of SO₂ over TiO₂

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