MOF-derived ZnCo2O4 porous micro-rice with enhanced electro-catalytic activity for the oxygen evolution reaction and glucose oxidation |
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| Authors: | Daojun Zhang Zimo Wang Jiakai Li Chengming Hu Xiaobei Zhang Bei Jiang Zhi Cao Jingchao Zhang Renchun Zhang |
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| Institution: | Henan Key Laboratory of New Optoelectronic Functional Materials, College of Chemistry and Chemical Engineering, Anyang Normal University, Anyang 455000 Henan China, +86 372 2900040 ; College of Chemistry and Molecular Engineering, Zhengzhou University, 100 Science Road, Zhengzhou 450001 P. R. China |
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| 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.A porous ZnCo2O4 micro-rice like microstructure was synthesized via calcination of a Zn–Co MOF precursor at an appropriate temperature. |
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