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Synthesis of visible-light active TiO2 photocatalyst with Pt-modification: Role of TiO2 substrate for high photocatalytic activity

Paper ID Volume ID Publish Year Pages File Format Full-Text
48458 46508 2008 5 PDF Available
Title
Synthesis of visible-light active TiO2 photocatalyst with Pt-modification: Role of TiO2 substrate for high photocatalytic activity
Abstract

Nano-sized TiO2 photocatalysts were prepared by hydrolysis of TiCl4 followed by calcination at different temperatures. X-ray diffraction (XRD) measurements revealed that all TiO2 powders crystallized in rutile even before calcination. The photocatalytic activity of the raw TiO2 powder clearly decreased with increasing calcination temperature. Pt-modification of the surface of TiO2 increased photocatalytic activity under visible-light irradiation, depending on the calcination temperature. Maximal photocatalytic activity was obtained at calcination temperatures of 300–450 °C, which was correlated with the light absorption properties of the Pt complex on TiO2 nano-particles. It was found that TiO2 surface structure plays an important role in the formation of TiOPt bonds, resulting in a large visible-light absorbance and high photocatalytic activity under visible-light irradiation.

Keywords
TiO2; Photocatalyst; Visible light; Platinum
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Synthesis of visible-light active TiO2 photocatalyst with Pt-modification: Role of TiO2 substrate for high photocatalytic activity
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Publisher
Database: Elsevier - ScienceDirect
Journal: Applied Catalysis B: Environmental - Volume 79, Issue 2, 28 February 2008, Pages 117–121
Authors
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Subjects
Physical Sciences and Engineering Chemical Engineering Catalysis
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Price was $35.95
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