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Synergetic effects of nitrogen doping and Au loading on enhancing the visible-light photocatalytic activity of nano-TiO2

Paper ID Volume ID Publish Year Pages File Format Full-Text
51460 46843 2009 5 PDF Available
Title
Synergetic effects of nitrogen doping and Au loading on enhancing the visible-light photocatalytic activity of nano-TiO2
Abstract

Nitrogen-doped together with gold-loaded TiO2 (Au/N–TiO2) nanoparticles were prepared by a simple wet-chemical method. The samples were characterized by XRD, TEM, XPS, UV–vis diffuse reflectance spectroscopy, and photoluminescence (PL) spectroscopy. It reveals that Au was loaded on the surface of TiO2 in the form of metallic Au, and nitrogen is introduced into TiO2 matrix in the form of substitutional nitrogen and interstitial nitrogen. Au/N–TiO2 exhibits much higher visible-light photocatalytic activity when compared with single N-doped or Au-loaded TiO2. A synergetic effect was proposed to explain the effects of nitrogen doping and Au loading on enhancing the visible-light photocatalytic activity of TiO2.

Keywords
TiO2; Nitrogen doping; Au loading; Photocatalytic activity; Synergetic effect
First Page Preview
Synergetic effects of nitrogen doping and Au loading on enhancing the visible-light photocatalytic activity of nano-TiO2
Publisher
Database: Elsevier - ScienceDirect
Journal: Catalysis Communications - Volume 10, Issue 6, 15 February 2009, Pages 925–929
Authors
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Subjects
Physical Sciences and Engineering Chemical Engineering Catalysis