Journal
CATALYSIS COMMUNICATIONS
Volume 12, Issue 10, Pages 890-894Publisher
ELSEVIER SCIENCE BV
DOI: 10.1016/j.catcom.2011.02.008
Keywords
ZnO/Ag; Photocatalyst; Nitrogen-doped; DFT
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Funding
- National Natural Science Foundation of China [50972063, 50572041]
- Natural Science Foundation of Shandong Province [Y2007F64]
- Education Department in Shandong Province [J 06A02]
- Tackling Key Program of Science and Technology in Shandong Province [2006GG2203014]
- Application Foundation Research Program of Qingdao [09-1-3-27-jch]
- Key Technology Major Research Plan in Qingdao [09-1-4-21-gx]
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N-doped ZnO/Ag nanocomposites were successfully prepared by two-step liquid deposition approach and plasma nitriding technology. The photocatalytic studies suggested that N-doped ZnO/Ag nanocomposites showed enhanced photocatalytic efficiency of photodegradation of methyl orange aqueous solution compared with the un-doped sample under UV light irradiation. The theoretical results indicated that the Fermi level shifted into the valence band, a narrow-deep acceptor level formed in the energy gap, then the transition of an electron from valence band to conduction band needs less energy which demonstrated the mechanism for the enhanced photocatalytic activity of N-doped ZnO/Ag nanocomposites. (C) 2011 Elsevier B.V. All rights reserved.
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