Synthesis of CoSALEN Composite in APO-5 and Its Electrocatalytic Behaviour for Reaction of Dioxygen Reduction

Authors

Rong ZHANG, College of Chemistry and Chemical Engineering,;Key Laboratory of Coal Science and Technology, MOE,Taiyuan University of Technology,Taiyuan 030024,China;
Li-hua TANG, College of Chemistry and Chemical Engineering,;Key Laboratory of Coal Science and Technology, MOE,Taiyuan University of Technology,Taiyuan 030024,China;
Bin-bin FAN, Key Laboratory of Coal Science and Technology, MOE,Taiyuan University of Technology,Taiyuan 030024,China;
Jing-hong MA, Key Laboratory of Coal Science and Technology, MOE,Taiyuan University of Technology,Taiyuan 030024,China;
Rui-feng LI, College of Chemistry and Chemical Engineering,;Key Laboratory of Coal Science and Technology, MOE,Taiyuan University of Technology,Taiyuan 030024,China;

Abstract

CoAPO-5 molecular sieve was hydrothermally synthesized. The Cobalt ions in CoAPO-5 were coordinated with the SALEN ligend diffusing into the channels of the molecular sieve to form CoSALEN complexes. The electrochemical behaviors and electrocatalysis for dioxygen reduction of the CoSALEN complex immobilized in APO-5 modified glassy carbon electrodes ( GCEs) have been investigated by cyclic voltammetry( CV) and chronoamperometry ( CA) in differrent pH aqueous solutions. The results showed that the PS/CoSALEN/APO-5 /GC modified electrode is of the high electrocatalytic activity towards dioxygen reduction in pH 6. 86 buffer solution with a reduced overpotential of 447 mV lower than bare GC electrode. The electroreduction of O2 at the modified GCEs is irreversibly diffusion-controlled with four electrons per O2 molecule. The catalytic mechanism of dioxygen reduction at the PS/CoSALEN/APO-5 /GCE is suggested according to the results from CV and potential step chronoamperometry.

Keywords

CoSALEN/APO-5, modified electrodes, electrocatalysis, dioxygen reduction, cyclic voltammetry

DOI Link

https://doi.org/10.61558/2993-074X.3340

Publication Date

2010-05-28

Online Available Date

2010-05-28

Revised Date

2010-05-28

Received Date

2010-05-28

Recommended Citation

Rong ZHANG, Li-hua TANG, Bin-bin FAN, Jing-hong MA, Rui-feng LI. Synthesis of CoSALEN Composite in APO-5 and Its Electrocatalytic Behaviour for Reaction of Dioxygen Reduction[J]. Journal of Electrochemistry, 2010 , 16(2): Article 12.
DOI: 10.61558/2993-074X.3340
Available at: https://jelectrochem.xmu.edu.cn/journal/vol16/iss2/12

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