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Fabrication of visible-light-driven one-dimensional anatase TiO2/Ag heterojunction plasmonic photocatalyst

Paper ID Volume ID Publish Year Pages File Format Full-Text
50600 46804 2012 4 PDF Available
Title
Fabrication of visible-light-driven one-dimensional anatase TiO2/Ag heterojunction plasmonic photocatalyst
Abstract

Visible-light-driven one-dimensional (1D) anatase TiO2/Ag plasmonic photocatalyst was successfully prepared through a facile wet impregnation method. Experimental results indicate that Ag nanoparticles cover on the surface of TiO2 uniformly and the heterogeneous structure is formed efficiently. The obtained 1D anatase TiO2/Ag heterogeneous composites exhibit excellent photocatalytic activity (nearly 100% within 2 h) for degradation of 2,4-dichlorophenol in wastewaters, which is ascribed to the suitable particle size of Ag nanoparticles in favor of enhancing the surface plasmon resonance and the heterogeneous structure advantageous of the separation of photogenerated electron–hole pairs. After reusage for ten times, the composites still present high photocatalytic activity, indicating the excellent stability.

► A novel 1D TiO2/Ag heterojunction plasmonic photocatalyst. ► The special heterojunction in favor of the separation of electron-hole pairs. ► Excellent visible-light photocatalytic activity and stability.

Keywords
Anatase TiO2/Ag; Composite; Heterogeneous structure; Visible-light photocatalysis; Plasmonic
First Page Preview
Fabrication of visible-light-driven one-dimensional anatase TiO2/Ag heterojunction plasmonic photocatalyst
Publisher
Database: Elsevier - ScienceDirect
Journal: Catalysis Communications - Volume 24, 5 July 2012, Pages 48–51
Authors
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Subjects
Physical Sciences and Engineering Chemical Engineering Catalysis