Design and synthesis of CeO2 nanowire/MnO2 nanosheet heterogeneous structure for enhanced catalytic properties

Haiwei Du, Yuan Wang, Hamidreza Arandiyan, Adnan Younis, Jason Scott, Bo Qu, Tao Wan, Xi Lin, Jianchao Chen, Dewei Chu

Research output: Contribution to journalArticlepeer-review

40 Citations (Scopus)

Abstract

A novel CeO2 nanowires/MnO2 nanosheets heterogeneous structure was successfully synthesized by a facile hydrothermal method and its carbon monoxide (CO) catalytic properties were studied. Amorphous MnO2 nanosheets were firstly formed on the surface of CeO2 nanowires to establish a core-shell structure mediated by interfacial redox process which was further transformed to δ-MnO2 through post heat treatment. Compared with as-prepared CeO2 nanowires, CeO2 nanowires/MnO2 nanosheets heterogeneous architecture showed improved catalytic performance because of the strong synergistic interaction between CeO2 and MnO2 at the interface. Moreover, the formation of δ-MnO2 further enhanced the catalytic properties by achieving more defective structures through a slight Mn doping. The catalytic activities can be further enhanced by core-shell compositional optimization. Thus, designing heterogeneous junction was an attractive approach for improving the catalytic properties of CeO2 based nanomaterials.

Original languageEnglish
Pages (from-to)103-111
Number of pages9
JournalMaterials Today Communications
Volume11
DOIs
Publication statusPublished - Jun 1 2017
Externally publishedYes

Keywords

  • CeO nano-catalysts
  • CO oxidation
  • Core-shell structure
  • Heterogeneous structure

ASJC Scopus subject areas

  • General Materials Science
  • Mechanics of Materials
  • Materials Chemistry

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