Rambutan-like hierarchically heterostructured CeO2-CuO hollow microspheres： Facile hydrothermal synthesis and applications

Hierarchically heterostructured hollow spheres are of great interest for a wide range of applications owing to their unique structural features and properties. However, the fabrication of well-defined hollow spheres with highly specific morphology for mixed transition metal oxides on a large scale r...

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Bibliographic Details
Published in:Nano research 2017-02, Vol.10 (2), p.381-396
Main Authors: Ji, Yongjun, Jin, Zheying, Li, Jing, Zhang, Yu, Liu, Hezhi, Shi, Laishun, Zhong, Ziyi, Su, Fabing
Format: Article
Language:English
Subjects:
Atomic/Molecular Structure and Spectra
Biomedicine
Biotechnology
Catalysis
Catalysts
Cerium oxides
Chemical engineering
Chemistry and Materials Science
Condensed Matter Physics
Coordination compounds
Copper
Copper oxides
Electrode materials
Electrodes
Electrolytes
Fabrication
Heterostructures
Materials Science
Metal oxides
Microscopy
Microspheres
Morphology
Nanoparticles
Nanorods
Nanotechnology
Oxides
Research Article
Spheres
Synthesis
Transition metal oxides
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Summary:Hierarchically heterostructured hollow spheres are of great interest for a wide range of applications owing to their unique structural features and properties. However, the fabrication of well-defined hollow spheres with highly specific morphology for mixed transition metal oxides on a large scale remains challenging. In this work, uniform rambutan-like heterostructured CeO2~CuO hollow microspheres with numerous copper-ceria interfacial sites and nanorods and nanoparticles as building blocks are prepared via a facile hydrothermal method followed by calcination. Importantly, this approach can be readily scaled up and is applicable to the synthesis of various CuO-based mixed metal oxide complex hollow spheres. The as-prepared CeO2-CuO hollow rambutans exhibit superior performance both as electrode materials for supercapacitors and as Cu-based catalysts for the Rochow reaction, mainly due to the small primary nanoparticle constituents, high surface area, and formation of numerous interior heterostructures.
ISSN:1998-0124
1998-0000
DOI:10.1007/s12274-016-1298-0