Systematic shape evolution of Co3O4 nanocrystals from octahedra to spheres under the influence of C2O42− and PVP

Min Kang; Hai Zhou; Dong Wu; Baoliang Lv

doi:10.1039/C6CE02106A

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Systematic shape evolution of Co₃O₄ nanocrystals from octahedra to spheres under the influence of C₂O₄²⁻ and PVP†

Min Kang,^a Hai Zhou,*^a Dong Wu^b and Baoliang Lv

*^b

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* Corresponding authors

^a Department of Chemistry and Chemical Engineering, Zunyi Normal College, Zunyi 563006, China
E-mail: 591658314@163.com
Fax: +86 0851 28924799
Tel: +86 0851 28924799

^b State Key Laboratory of Coal Conversion, Institute of Coal Chemistry, Chinese Academy of Sciences, Taiyuan 030001, China
E-mail: lbl604@sxicc.ac.cn
Fax: +86 0351 4041153
Tel: +86 0351 4063121

Abstract

A series of Co₃O₄ nanocrystals with systematic shape evolution from octahedra to corner-truncated octahedra, corner-truncated cubes, globate polyhedra and micro-spheres were successfully synthesized under the influence of C₂O₄²⁻ and PVP. It was proved that crystal facet growth limitation caused by the adsorption of C₂O₄²⁻ and PVP on the surface of Co₃O₄ particles played a crucial role in this shape evolution process. Besides obtaining a series of intermediate Co₃O₄ nanocrystals exposing different facets, this strategy could also show the relationship between these structures. The present work extends the PVP-assisted method to realize the shape evolution process of metal oxide nanomaterials.

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Correction: Systematic shape evolution of Co3O4 nanocrystals from octahedra to s…

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Article information

DOI: https://doi.org/10.1039/C6CE02106A
Article type: Paper
Submitted: 01 Oct 2016
Accepted: 07 Nov 2016
First published: 07 Nov 2016

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CrystEngComm, 2016,18, 9299-9306

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Systematic shape evolution of Co₃O₄ nanocrystals from octahedra to spheres under the influence of C₂O₄²⁻ and PVP

M. Kang, H. Zhou, D. Wu and B. Lv, CrystEngComm, 2016, 18, 9299 DOI: 10.1039/C6CE02106A

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