MOF-derived ZnCo2O4 porous micro-rice with enhanced electro-catalytic activity for the oxygen evolution reaction and glucose oxidation

Daojun Zhang; Zimo Wang; Jiakai Li; Chengming Hu; Xiaobei Zhang; Bei Jiang; Zhi Cao; Jingchao Zhang; Renchun Zhang

doi:10.1039/C9RA08723K

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MOF-derived ZnCo₂O₄ porous micro-rice with enhanced electro-catalytic activity for the oxygen evolution reaction and glucose oxidation†

Daojun Zhang,

*^ab Zimo Wang,^a Jiakai Li,^a Chengming Hu,^a Xiaobei Zhang,^b Bei Jiang,^a Zhi Cao,^a Jingchao Zhang^a and Renchun Zhang^a

Author affiliations

* Corresponding authors

^a Henan Key Laboratory of New Optoelectronic Functional Materials, College of Chemistry and Chemical Engineering, Anyang Normal University, Anyang 455000, Henan, China
E-mail: zhangdj0410@sohu.com
Tel: +86 372 2900040

^b College of Chemistry and Molecular Engineering, Zhengzhou University, 100 Science Road, Zhengzhou 450001, P. R. China

Abstract

A porous ZnCo₂O₄ micro-rice like microstructure was synthesized via calcination of a Zn–Co MOF precursor at an appropriate temperature. The as-prepared ZnCo₂O₄ sample presented good electrocatalytic oxygen evolution reaction performance with a small overpotential (η₁₀ = 389 mV) and high stability in basic electrolyte. Furthermore, in basic medium, the as-synthesized ZnCo₂O₄ micro-rice also showed good electrocatalytic activity for glucose oxidation. A ZnCo₂O₄ micro-rice modified glass carbon electrode may be used as a potential non-enzymatic glucose sensor. The excellent electrocatalytic OER and glucose oxidation performances of ZnCo₂O₄ might be attributed to the unique porous structure formed by the nanoparticles. The porous architecture of the micro-rice can provide a large number of electrocatalytically active sites and high electrochemical surface area (ECSA). The result may offer a new way to prepare low-cost and high performance oxygen evolution reaction and glucose oxidation electrocatalysts.

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Article information

DOI: https://doi.org/10.1039/C9RA08723K
Article type: Paper
Submitted: 24 Oct 2019
Accepted: 13 Dec 2019
First published: 02 Mar 2020
This article is Open Access

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RSC Adv., 2020,10, 9063-9069

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MOF-derived ZnCo₂O₄ porous micro-rice with enhanced electro-catalytic activity for the oxygen evolution reaction and glucose oxidation

D. Zhang, Z. Wang, J. Li, C. Hu, X. Zhang, B. Jiang, Z. Cao, J. Zhang and R. Zhang, RSC Adv., 2020, 10, 9063 DOI: 10.1039/C9RA08723K

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