| Effect of crystal and domain orientation on the visible light photochemical reduction of Ag on BiFeO<sub>3</sub> | |
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MedLine Citation:
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PMID: 21517040 Owner: NLM Status: Publisher |
Abstract/OtherAbstract:
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The reduction of silver from an aqueous solution on BiFeO3 surfaces, activated by visible light, was investigated as a function of crystal and ferroelectric domain orientation. When excited by light with energy between 2.53 and 2.70 eV, BiFeO3 photochemically reduces silver cations from solution in patterns corresponding to the underlying ferroelectric domain structure. Silver is preferentially reduced on domains with a positive polarization directed toward the surface. The amount of reduced silver depends on whether the component of the domain polarization normal to the surface is positive or negative, but is relatively insensitive to the crystal orientation. It is concluded that the ferroelectric polarization decreases electron drift to the surface in domains with a negative polarization, causing spatially selective photochemical behavior, and that the direction of the polarization is more important than the amplitude. |
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Authors:
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Andrew M Schultz; Yiling Zhang; Paul Andrew Salvador; Gregory S Rohrer |
Publication Detail:
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Type: JOURNAL ARTICLE Date: 2011-4-25 |
Journal Detail:
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Title: ACS applied materials & interfaces Volume: - ISSN: 1944-8244 ISO Abbreviation: - Publication Date: 2011 Apr |
Date Detail:
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Created Date: 2011-4-26 Completed Date: - Revised Date: - |
Medline Journal Info:
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Nlm Unique ID: 101504991 Medline TA: ACS Appl Mater Interfaces Country: - |
Other Details:
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Languages: ENG Pagination: - Citation Subset: - |
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From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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