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Morphology-controlled synthesis of sunlight-driven plasmonic photocatalysts Ag@AgX (X = Cl, Br) with graphene oxide template

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Title: Morphology-controlled synthesis of sunlight-driven plasmonic photocatalysts Ag@AgX (X = Cl, Br) with graphene oxide template
Authors: Wang, Yanqing Browse this author
Sun, Ling Browse this author
Fugetsu, Bunshi Browse this author →KAKEN DB
Issue Date: 28-Oct-2013
Publisher: Royal Society of Chemistry
Journal Title: Journal of Materials Chemistry A
Volume: 1
Issue: 40
Start Page: 12536
End Page: 12544
Publisher DOI: 10.1039/c3ta12893h
Abstract: Novel cubic Ag@AgX@Graphene (X = Cl, Br) nanocomposites are facilely manipulated by means of a graphene oxide (GO) sheet-assisted assembly protocol, where GO sheets act as an amphiphilic template for hetero-growth of AgX nanoparticles. A morphology transformation of AgX nanoparticles from sphere to cube-like shape was accomplished by involving GO. With further UV irradiation, the reduction of GO to graphene and the generation of Ag nanocrystals on AgX occur simultaneously. We have demonstrated that the thus-produced Ag@AgX@Graphene nanocomposites could be employed as stable plasmonic photocatalysts to decompose acridine orange as a typical dye pollutant under sunlight irradiation. Compared with the bare quasi-spherical Ag@AgX, such graphene-interfaced cubic Ag@AgX nanocomposites display distinctly higher adsorptive capacity, smaller crystal size and reinforced electron-hole pair separation owing to the interfacial contact between Ag@AgX and graphene sheet components, resulting in an enhanced photocatalytic decomposition performance. This investigation provides new possibilities for the development of morphology-controlled plasmonic photocatalysts and facilitates their practical application in environmental issues.
Description: First published online 15 Aug 2013
Relation: http://pubs.rsc.org/en/content/articlelanding/2013/ta/c3ta12893h/
Type: article (author version)
URI: http://hdl.handle.net/2115/56793
Appears in Collections:環境科学院・地球環境科学研究院 (Graduate School of Environmental Science / Faculty of Environmental Earth Science) > 雑誌発表論文等 (Peer-reviewed Journal Articles, etc)

Submitter: 古月 文志

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