標題: The exceptional photo-catalytic activity of ZnO/RGO composite via metal and oxygen vacancies
作者: Chen, Ting-Ting
Chang, I-Chun
Yang, Min-Han
Chiu, Hsin-Tien
Lee, Chi-Young
應用化學系
Department of Applied Chemistry
關鍵字: Photocatalysis;Defect;Heterojunction;Graphene;ZnO
公開日期: 1-Oct-2013
摘要: ZnO/reduced graphene oxide (RGO) nanocomposite with many zinc and oxygen vacancies, synthesized in a simple solvothermal reaction exhibits significant photocatalytic activity. Photoluminescence and electron paramagnetic resonance measurements indicate that the zinc vacancies and oxygen vacancies were generated on the ZnO surface, and were crucial to that photocatalytic behavior. The photodegradation of methylene orange was significantly reduced by the addition of h(+) and (OH)-O-center dot scavengers. Both zinc and oxygen vacancies cause effective charge separation in the photodegradation of methylene orange, which markedly inhibits the recombination of charges. The advanced photocatalytic behavior of the ZnO/RGO composite is discussed in detail herein. (c) 2013 Elsevier B.V. All rights reserved.
URI: http://dx.doi.org/10.1016/j.apcatb.2013.05.059
http://hdl.handle.net/11536/22740
ISSN: 0926-3373
DOI: 10.1016/j.apcatb.2013.05.059
期刊: APPLIED CATALYSIS B-ENVIRONMENTAL
Volume: 142
Issue: 
起始頁: 442
結束頁: 449
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