THE EFFECT OF NOBLE METAL ON THE GENERATION OF H2O2 IN THE TiO2 AQUEOUS SUSPENSION DURING ILLUMINATION

doi:10.7517/j.issn.1674-0475.1999.02.159

Abstract

Abstract: The effect of Ag⁺ and Pd²⁺ ion on the generation of H₂O₂ in the TiO₂ aqueous suspension were studied and compared with the surface modification of TiO₂ with Ag and Pd. The production of H₂O₂ under ultraviolet illumination was greatly enhanced after such noble metals were added. This effect was due to the inhibiting of recombination of electrons and holes by noble metal atoms adsorbed on TiO₂ surface. But the amount of H₂O₂ generated in Pd²⁺/TiO₂ aqueous suspension was not as large as that in Pd/TiO₂ system during the first ten minutes of illumination. The slow reduction of Pd²⁺ under ultraviolet illumination to Pd leads to such results.

Key words: TiO₂, modified by noble metal, addition of ion, H₂O₂

YAO Xiao-bin, MA Ying, YAO Jian-nian. THE EFFECT OF NOBLE METAL ON THE GENERATION OF H₂O₂ IN THE TiO₂ AQUEOUS SUSPENSION DURING ILLUMINATION[J]. Imaging Science and Photochemistry, 1999, 17(2): 159-163.

References

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THE EFFECT OF NOBLE METAL ON THE GENERATION OF H₂O₂ IN THE TiO₂ AQUEOUS SUSPENSION DURING ILLUMINATION

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