PREPARATION AND PHOTOCATALYTIC PERFORMANCE OF Y2O3/TiO2 CONDUCTED WITH THE DEGRADATION OF SODIUM DODECYLBENZENE SULPHONATE

doi:10.7517/j.issn.1674-0475.2002.04.241

Abstract

Abstract: Y₂O₃/TiO₂ catalysts were prepared by impregnation method and characterized by means of UV,SEM,and BET.Being a model reaction,the photocatalytic degradation of DBS solution was investigated in TiO₂ and Y₂O₃/TiO₂ powder suspensions and irradiated by high pressure mercury lamp.Photocatalytic degradation efficiency of different catalysts were evaluated by the apparent first-order kinetic constant and the decomposition rate of DBS.The effects of preparation conditions,the mass ratio and adsorption of Y₂O₃/TiO₂ ,calcination conditions and special surface area on composite photocatalyst photoactivity were also investigated.Results show that there exists a best ratio value between Y₂O₃ and TiO₂,while the mass ratio of composite catalyst is 1 to 200,the photocatalytic activity of Y₂O₃/TiO₂ catalyst is 2.4 times as that of TiO₂.

Key words: titanium dioxide, yttrium oxide, composite catalyst

CLC Number:

TQ57

ZHANG Jun-ping, CHEN Ping. PREPARATION AND PHOTOCATALYTIC PERFORMANCE OF Y₂O₃/TiO₂ CONDUCTED WITH THE DEGRADATION OF SODIUM DODECYLBENZENE SULPHONATE[J]. Imaging Science and Photochemistry, 2002, 20(4): 241-246.

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PREPARATION AND PHOTOCATALYTIC PERFORMANCE OF Y₂O₃/TiO₂ CONDUCTED WITH THE DEGRADATION OF SODIUM DODECYLBENZENE SULPHONATE

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