期刊
CATALYSIS COMMUNICATIONS
卷 17, 期 -, 页码 131-135出版社
ELSEVIER
DOI: 10.1016/j.catcom.2011.10.034
关键词
Heterojunction; Photocatalyst; Visible light; Ag3PO4; Ag3PO4/TiO2; 2-propanol
资金
- Korean Center for Artificial Photosynthesis (KCAP)
- Ministry of Education, Science, and Technology [NRF-2011-C1AAA001-2011-0030278]
- Ministry of Environment, Republic of Korea [022-061-026]
- National Research Foundation of Korea [2011-0002995]
Ag3PO4 nanoparticle of similar to 100 nm size was synthesized by an ion-exchange reaction between AgNO3 and Na3PO4 at ambient condition. The dark yellowish Ag3PO4 with a bandgap of 2.44 eV revealed significant visible-light absorption. Novel heterojunction structures of Ag3PO4/TiO2 were then fabricated by covering the surface of Ag3PO4 with polycrystalline TiO2 by sol-gel process. Under visible-light irradiation (lambda >= 420 nm). 3/97 Ag3PO4/TiO2 (in wt.% ratio) showed remarkably high photocatalytic activity in removal of gaseous 2-propanol (IP) and in evolution of CO2. Its photocatalytic behavior seemed to be caused by the inter-semiconductor hole-transfer between the valence band (VB) of Ag3PO4 and TiO2. (C) 2011 Elsevier B.V. All rights reserved.
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