Photocatalytic-Oxidation of H2S on TiO2

doi:10.7517/j.issn.1674-0475.2004.03.211

Abstract

Abstract: The photocatalytic-oxidation of H₂S on TiO₂ was investigated.Oxygen is indispensable for the photodestruction of H₂S.When the mol ratio of oxygen to H₂S was 42:1 in the raw gas,the degradation of H₂S reached 97% with 28000 h^-1 volume space velocity.TiO₂ catalyst can be poisoned by S⁰.After TiO₂ catalyst was regenerated by light in the presence of air,S⁰ was converted to SO₄^2-,the photocatalytic activity of TiO₂ was recovered.The presence of surface SO₄^2- can stabilize the photocatalytic activity of TiO₂.

Key words: TiO₂, H₂S, photocatalytic, SO₄^2-

CLC Number:

O643.3

GUO Jian-hui, JIN Zhen-sheng, ZHANG Min, HUANG Yong, YANG Jian-jun, ZHANG Zhi-jun. Photocatalytic-Oxidation of H₂S on TiO₂[J]. Imaging Science and Photochemistry, 2004, 22(3): 211-217.

References

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Photocatalytic-Oxidation of H₂S on TiO₂

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