Synthesis of Meso-porous Co3O4 Polyhedra and Their Electrochemical Properties

doi:10.7503/cjcu20180853

Chem. J. Chinese Universities ›› 2019, Vol. 40 ›› Issue (7): 1374.doi: 10.7503/cjcu20180853

• Analytical Chemistry • Previous Articles Next Articles

Synthesis of Meso-porous Co₃O₄ Polyhedra and Their Electrochemical Properties

ZHOU Hai^1,2, CHEN Hao¹, GUO Ya¹, KANG Min^1,2()

1. Department of Chemistry and Chemical Engineering, Zunyi Normal College,
2. Academician Workstation of Zunyi Normal College, Zunyi 563006, China

Received:2018-12-20 Online:2019-07-10 Published:2019-07-12
Contact: KANG Min E-mail:20056570@163.com
Supported by:
Supported by the Technology Foundation of the Science and Technology Department of Guizhou Province, China(Nos. [2015]2145, [2017]1208) and the Natural Science Research Project of Education Department of Guizhou Province, China(Nos. [2015]394, [2016]093).

Abstract

Abstract: CoOOH polyhedra was synthesized via hydrothermal treatment of Co(NO₃)₂ and (NH₄)₂S₂O₈, which was then transformed into meso-porous Co₃O₄ polyhedra via thermal annealing. The structure and composition of materials were characterized by means of scanning electron microscopy(SEM), transmission electron microscopy(TEM), X-ray diffraction(XRD) and N₂ adsorption-desorption. The influence of reaction time, reaction temperature and (NH₄)₂S₂O₈ concentration on the morphology of CoOOH polyhedra were investigated and the possible formation mechanism of CoOOH polyhedra was also analyzed. With respect to non-enzyme glucose sensing, the present Co₃O₄ polyhedra exhibited a linear detection range from 0.05 mmol/L to 1.8 mmol/L, a sensitivity of 148 μA·cm^-2·mmol·L^-1 and a detection limit of 1 μmol/L.

Key words: Hydrothermal synthesis, CoOOH polyhedra, Meso-porous Co₃O₄ polyhedra, Ammonium persulfate, Glucose sensing

CLC Number:

O657

TrendMD:

ZHOU Hai, CHEN Hao, GUO Ya, KANG Min. Synthesis of Meso-porous Co₃O₄ Polyhedra and Their Electrochemical Properties[J]. Chem. J. Chinese Universities, 2019, 40(7): 1374.

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Synthesis of Meso-porous Co₃O₄ Polyhedra and Their Electrochemical Properties

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