Journal
CATALYSIS COMMUNICATIONS
Volume 10, Issue 6, Pages 925-929Publisher
ELSEVIER SCIENCE BV
DOI: 10.1016/j.catcom.2008.12.029
Keywords
TiO2; Nitrogen doping; Au loading; Photocatalytic activity; Synergetic effect
Categories
Funding
- National High Technology Research and Development Program of China [2006AA03Z358]
- National Natural Science Foundation of China [20706015, 50703009]
- Shanghai Rising-Star Program [06QA14013, 07QA14014]
- Major Basic Research Project of Shanghai [07DJ14001]
- Ph.D. Programs Foundation of Ministry of Education of China [20070251022]
- Special Projects for Key Laboratories in Shanghai [07DZ22016, 06DZ22008]
- Special Projects for Nanotechnology of Shanghai [0752nm010, 0652nm034]
- 973 Program [2004CB719500]
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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. (C) 2008 Elsevier B.V. All rights reserved.
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