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Facile One-Pot Synthesis of PbSe and NiSe2 Hollow Spheres:Kirkendall-Effect-Induced Growth and Related Properties

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A facile one-pot polyol process for the synthesis of PbSe and NiSe2 hollow spheres, using R-Se solid
spheres as starting core materials was successfully developed. The careful characterization of the timedependent products demonstrates that the Kirkendall effect could be the involved growth mechanism for
the evolution process from Se solid spheres to PbSe and NiSe2 hollow spheres, which is schematically
illustrated as a two-stage temperature-controlled, Kirkendall-effect-directed formation. The microstructure
analysis shows that both the PbSe and NiSe2 hollow spheres are polycrystalline with cubic structure. The
band gap of the PbSe hollow spheres exhibits a notable size effect, and the magnetic susceptibility of the
NiSe2 hollow spheres is significantly increased compared with that of its bulk counterpart. This work
indicates that the nonmetal Se solid spheres can act as an appropriate fast diffusion core material for
hollow structure through Kirkendall effect in the solution phase method.

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Informasi Detail

Judul Seri

Chemistry of Materials

No. Panggil

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Penerbit

Washington, DC : American Chemical Society., 2009

Deskripsi Fisik

Chem. Mater. 2009, 21, 969–974

Bahasa

English

ISBN/ISSN

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Klasifikasi

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Tipe Isi

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Tipe Media

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Tipe Pembawa

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Edisi

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Subjek

KIMIA

Info Detail Spesifik

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Pernyataan Tanggungjawab

agus

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