Preparation and Photocatalytic Activity of Pt-modified TiO2 Pillared Bentonite

Abstract

Abstract: TiO₂ pillared bentonite (TiO₂-PILC) was prepared with an intercalation of polynuclear titanium complex formed by reaction of Ti(i-C₃H₇O)₄ and acetic acid. TiO₂ pillared bentonites modified with
platinum (Pt-TiO₂-PILCs) were carried out via the photodeposition method. Characteristics of the pillared bentonites were examined by XRD, BET, TEM. TiO₂-PILC and Pt-TiO₂-PILCs were used
as composite photocatalysts in photocatalytic degradation of sodium pentachlorophenate(PCP-Na). The results indicate that all the pillared bentonites contain TiO₂ in the anatase phase and with
a mean crystallite size of TiO₂ about 5nm. The photocatalytic activities of Pt-TiO₂-PILCs are superior to that of TiO2-PILC. In addition, the experiments also illustrate that the composite photocatalysts
can be easily recovered, regenerated and reused.

Key words: TiO₂ pillared bentonite, platinum, photodeposition method, photocatalytic activity, sodium pentachlorophenate

CLC Number:

O643

LI Yi-Min,LU Yue-Qing,QIU Huan-Huan,LIU Ying,LI Hai-Yang. Preparation and Photocatalytic Activity of Pt-modified TiO₂ Pillared Bentonite[J]. Journal of Inorganic Materials.

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Preparation and Photocatalytic Activity of Pt-modified TiO₂ Pillared Bentonite

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