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Research Article

Single crystalline CeO2 nanotubes

Fangxian Cao1, Mingkai Zhang1, Kaili Yang1, Zhimin Tian1, Jing Li2, Yongquan Qu1,3( )
Frontier Institute of Science and Technology, Xi’an Jiaotong University, Xi’an 710049, China
College of Chemistry and Chemical Engineering, Liaocheng University, Liaocheng 252059, China
Key Laboratory of Special Functional and Smart Polymer Materials of Ministry of Industry and Information Technology, School of Chemistry and Chemical Engineering, Northwestern Polytechnical University, Xi’an 710072, China
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Abstract

Here, we report a facile synthetic methodology to prepare uniform single crystalline CeO2 nanotubes through a hydrothermal transformation of CeO2 nanorods in aqueous Ce(NO3)3 solution. A chemically driven etching-dissolution-deposition mechanism is proposed, involving the surface Ce3+ hydrolysis and dissolution at tips of nanorods and subsequent redeposition and crystallization on the outer sides of nanorods. Compared to CeO2 nanorods, CeO2 nanotubes exhibited the richer structural defects, higher reducibility and larger surface area, leading to a higher haloperoxidase-like activity.

Keywords

CeO2 nanorodhydrothemal transformationCeO2 nanotubeetching-dissolution-deposition mechanismhaloperoxidase-like activity

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Nano Research
Volume 14 Issue 3,
March 2021
Pages 715-719
DOI: 10.1007/s12274-020-3103-3
Cite this article:
Cao F, Zhang M, Yang K, et al. Single crystalline CeO2 nanotubes. Nano Research, 2021, 14(3): 715-719. https://doi.org/10.1007/s12274-020-3103-3
Topics:
Cerium oxideCrystal symmetryEtchingNanorodsNanotubes

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Received: 05 August 2020
Revised: 07 September 2020
Accepted: 08 September 2020
Published: 01 March 2021
© Tsinghua University Press and Springer-Verlag GmbH Germany, part of Springer Nature
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