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

Yongjun Ji*, Zheying Jin, Jing Li, Yu Zhang, Hezhi Liu, Laishun Shi, Ziyi Zhong, Fabing Su

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

19 Scopus citations

Abstract

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. [Figure not available: see fulltext.]

Original languageEnglish
Pages (from-to)381-396
Number of pages16
JournalNano Research
Volume10
Issue number2
DOIs
StatePublished - 1 Feb 2017
Externally publishedYes

Keywords

  • heterostructure
  • hollow sphere
  • rambutan
  • Rochow reaction
  • supercapacitors

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