標題: Enhanced photocatalytic decomposition of methylene blue by the heterostructure of PdO nanoflakes and TiO2 nanoparticles
作者: Huang, Chien-Jung
Pan, Fu-Ming
Chang, I-Chun
材料科學與工程學系
Department of Materials Science and Engineering
關鍵字: PdO;TiO2;Heterostructure;Methylene blue;Photocatalysis
公開日期: 15-Dec-2012
摘要: We prepared PdO nanoflakes by reactive sputter deposition to form a heterostructure with TiO2 nanoparticles on the SiO2 substrate for the study of photocatalytic decomposition of methylene blue (MB) molecules. Although the PdO nanoflake has little photocatalytic activity toward MB decomposition, the PdO/TiO2 heterostructure has a photocatalytic activity toward MB decomposition under UV light illumination as large as twice that of bare TiO2 nanoparticles. The enhancement in the photocatalytic activity is ascribed to the fast photogenerated carrier separation resulting from the potential barrier formed at the heterojunction between the two oxide semiconductors. Although PdO nanoflakes can be photoexcited under visible light illumination, the PdO/TiO2 heterostructure exhibits little photocatalytic activity toward the MB decomposition. (C) 2012 Elsevier B. V. All rights reserved.
URI: http://dx.doi.org/10.1016/j.apsusc.2012.09.058
http://hdl.handle.net/11536/20578
ISSN: 0169-4332
DOI: 10.1016/j.apsusc.2012.09.058
期刊: APPLIED SURFACE SCIENCE
Volume: 263
Issue: 
起始頁: 345
結束頁: 351
Appears in Collections:Articles


Files in This Item:

  1. 000311217500056.pdf