Electrocatalytic Oxidation of Glycerol at the Platinum Electrode Modified with an Nd-Fe-MoO₄^2- Cyano-Bridged Mixed Coordination Polymer

Authors

Yong-jun MA, Key Laboratory of Ecological Environment Related Polymer Materials of Education Ministry, College of Chemistry &Chemical Engineering , Northwest Normal University, Lanzhou 730070, China;Follow
Yu-xiu TIAN, Key Laboratory of Ecological Environment Related Polymer Materials of Education Ministry, College of Chemistry &Chemical Engineering , Northwest Normal University, Lanzhou 730070, China;
Jing LIU, Key Laboratory of Ecological Environment Related Polymer Materials of Education Ministry, College of Chemistry &Chemical Engineering , Northwest Normal University, Lanzhou 730070, China;
Min ZHOU, Key Laboratory of Ecological Environment Related Polymer Materials of Education Ministry, College of Chemistry &Chemical Engineering , Northwest Normal University, Lanzhou 730070, China;
Jing DING, Key Laboratory of Ecological Environment Related Polymer Materials of Education Ministry, College of Chemistry &Chemical Engineering , Northwest Normal University, Lanzhou 730070, China;
Zhi-mei JIN, Key Laboratory of Ecological Environment Related Polymer Materials of Education Ministry, College of Chemistry &Chemical Engineering , Northwest Normal University, Lanzhou 730070, China;
Xiang-mei WANG, Key Laboratory of Ecological Environment Related Polymer Materials of Education Ministry, College of Chemistry &Chemical Engineering , Northwest Normal University, Lanzhou 730070, China;

Corresponding Author

Yong-jun MA(mayj@nwnu.edu.cn)

Abstract

A platinum electrode decorated with the ordered Nd-Fe-MoO₄^2- cyano-bridged mixed coordination polymer was successfully prepared by electrodeposition in virtue of the lyotropic liquid crystal soft template methods, and electrocatalytic oxidation behavior of glycerol was investigated on the chemically modified electrode by cyclic voltammetry. The influences of experimental factors such as the concentrations of H⁺ and SO₄^2- in electrolytes, glycerol concentration and scan rate on the electrocatalytic activity of glycerol at the modified electrode were also studied. It indicated that the proper amount of SO₄^2- in weakly acidic electrolyte could help to improve the electro-oxidation process of glycerol at the modified electrode. In the potential range of -0.2 ~ 0.3 V, the good linear relationship between the electro-oxidation current of glycerol (Peak 1) and the square root value of the scan rate revealed the fact that the electro-oxidation of glycerol had a diffusion-controlled characteristics. The oxidation peak current density of glycerol on the modified electrode was fourfold as large as that at the platinum electrode, while the apparent activation energy of the electrode reaction for glycerol had much less value. Therefore, there existed synergistic catalytic action to electro-oxidation process of glycerol at the Nd-Fe-MoO₄^2-/Pt electrode, and the modified electrode possessed the high electrocatalytic activity, fast current response and steady catalytic activity.

Graphical Abstract

Keywords

glycerol, electrocatalytic oxidation, cyano-bridged mixed coordination polymer, chemically modified electrode

DOI Link

https://doi.org/10.13208/j.electrochem.130723

Publication Date

2014-04-28

Online Available Date

2014-04-17

Revised Date

2013-11-11

Received Date

2013-07-23

Recommended Citation

Yong-jun MA, Yu-xiu TIAN, Jing LIU, Min ZHOU, Jing DING, Zhi-mei JIN, Xiang-mei WANG. Electrocatalytic Oxidation of Glycerol at the Platinum Electrode Modified with an Nd-Fe-MoO₄^2- Cyano-Bridged Mixed Coordination Polymer[J]. Journal of Electrochemistry, 2014 , 20(2): 150-155.
DOI: 10.13208/j.electrochem.130723
Available at: https://jelectrochem.xmu.edu.cn/journal/vol20/iss2/10