Document Detail


Fe(3) O(4) /WO(3) Hierarchical Core-Shell Structure: High-Performance and Recyclable Visible-Light Photocatalysis.
MedLine Citation:
PMID:  21432916     Owner:  NLM     Status:  Publisher    
Abstract/OtherAbstract:
A facile solvothermal epitaxial growth combined with a mild oxidation route has been developed for the fabrication of a magnetically recyclable Fe(3) O(4) /WO(3) core-shell visible-light photocatalyst. In this core-shell structured photocatalyst, visible-light-active WO(3) nanoplates (the shells) with high surface area are used as a medium to harvest absorbed photons and convert them to photogenerated charges, while conductive Fe(3) O(4) microspheres (the cores) are used as charge collectors to transport the photogenerated charges. This is a new role for magnetite. The Fe(3) O(4) /WO(3) core-shell structured photocatalysts possess large surface-exposure area, high visible-light-absorption efficiency, stable recyclability, and efficient charge-separation properties, the combination of which has rarely been reported in other visible-light-active photocatalysts. Photoelectrochemical investigations verify that the core-shell structured Fe(3) O(4) /WO(3) has a more effective photoconversion capability than pure WO(3) or Fe(3) O(4) . At the same time, the visible-light photocatalytic ability of the Fe(3) O(4) /WO(3) photocatalyst has significantly enhanced activity in the photodegradation of organic-dye materials. The results presented herein provide new insights into core-shell materials as high-performance visible-light photocatalysts and their potential use in environmental protection.
Authors:
Guangcheng Xi; Bing Yue; Junyu Cao; Jinhua Ye
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Publication Detail:
Type:  JOURNAL ARTICLE     Date:  2011-3-22
Journal Detail:
Title:  Chemistry (Weinheim an der Bergstrasse, Germany)     Volume:  -     ISSN:  1521-3765     ISO Abbreviation:  -     Publication Date:  2011 Mar 
Date Detail:
Created Date:  2011-3-24     Completed Date:  -     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  9513783     Medline TA:  Chemistry     Country:  -    
Other Details:
Languages:  ENG     Pagination:  -     Citation Subset:  -    
Copyright Information:
Copyright © 2011 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim.
Affiliation:
International Center for Materials Nanoarchitectonic and Photocatalytic Materials Center, National Institute for Materials Science, 1-2-1 Sengen, Tsukuba, Ibaraki 305-0047 (Japan).
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