Hollow microsphere assembly of ZnO nanosheets

Growth and assembly of ZnO nanosheets into hollow microsphere are performed using PEG 200 as directing agent. FESEM images show that the average width of these assemblied ZnO nanosheets is around ∼250 nm, the length is about 500–800 nm and the thickness is about 25 nm, the diameter of ZnO-assembled...

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Published inMaterials chemistry and physics Vol. 112; no. 2; pp. 592 - 595
Main Authors Zhou, Xingfu, Hu, Zhaolin, Fang, Yiqun, Ding, Weiping, Xu, Nanping
Format Journal Article
LanguageEnglish
Published Elsevier B.V 01.12.2008
Subjects
Chemical synthesis
Electron microscopy
Luminescence
Oxides
Oxides
Chemical synthesis
Electron microscopy
Luminescence
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Summary:Growth and assembly of ZnO nanosheets into hollow microsphere are performed using PEG 200 as directing agent. FESEM images show that the average width of these assemblied ZnO nanosheets is around ∼250 nm, the length is about 500–800 nm and the thickness is about 25 nm, the diameter of ZnO-assembled microsphere is about 2–4 μm. Study shows that microsphere of ZnO nanosheets have a centre cavity, these microsphere assemblied ZnO nanosheets have a wide visible yellow emission at 567 cm −1, confocal laser microscopy of an individual ZnO nanosheets assemblied microsphere also show the intense yellow light emission. The oriented attachment of ∼5 nm ZnO nanoparticle building blocks eventually form the ZnO nanosheets. The most plausible dissociation–deposition mechanism that directs the formation of microspheric assembly of ZnO nanosheets is also proposed.
Bibliography:ObjectType-Article-2
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content type line 23
ISSN:0254-0584
1879-3312
DOI:10.1016/j.matchemphys.2008.06.025