抗坏血酸在PPy-HEImTfa/Pt电极上的电催化氧化及其机理

doi:10.3866/PKU.WHXB20101218

Abstract

Abstract:

A platinum electrode was electrochemically modified with polypyrrole (PPy) in the ionic liquid 1-ethylimidazolium trifluoroacetate (HEImTfa) to produce a modified electrode (PPy-HEImTfa/Pt). Its electrocatalytic performance toward the oxidation of ascorbic acid (0.1 mol·L^-1) was investigated by cyclic voltammetry. Compared with a bare Pt electrode and a PPy-H₂SO₄/Pt electrode, which was prepared in a solution of H₂SO₄, the peak potentials for ascorbic acid oxidation on the PPy-HEImTfa/Pt electrode decreased by 0.19 and 0.10 V, respectively. Additionally, the peak currents increased by 3.6 and 3.0 mA, respectively. Therefore, the electrocatalytic activity of the PPy-HEImTfa/Pt electrode for the oxidation of ascorbic acid was far better than that of the other systems. In situ Fourier transform infrared (In situ FTIR) spectroscopy results showed that the ascorbic acid was firstly oxidized to dehydroascorbic acid on the PPy-HEImTfa/Pt electrode and then underwent a fast hydration reaction to give hydrated dehydroascorbic acid in the aqueous solution. The hydrated dehydroascorbic acid then underwent further hydrolysis to form 2,3-diketogulonic acid by a ring opening reaction. Finally, a part of ascorbic acid was oxidized to CO₂ at high potentials.

Key words: Electrocatalytic oxidation, 1-Ethylimidazolium trifluoroacetate, Polypyrrole, Ascorbic acid, In situ Fourier transform infrared spectroscopy

LI Mei-Chao, WANG Wu-Yang, ZHU Wan-Xia, MA Chun-An. Electrocatalytic Oxidation of Ascorbic Acid on a PPy-HEImTfa/Pt Electrode and Its Mechanism[J]. Acta Phys. -Chim. Sin. 2010, 26(12), 3212-3216. doi: 10.3866/PKU.WHXB20101218

References

1. Raoof, J. B.; Ojani, R.; Rashid-Nadimi, S. Electrochim. Acta, 2005, 50(24): 4694
2. Xing, X. K.; Bae, I. T.; Shao, M. J.; Liu C. C. J. Electroanal. Chem., 1993, 346(1-2): 309
3. Zhang, L. Electrochim. Acta, 2007, 52(24): 6969
4. Paixao, T. R. L. C.; Bertotti, M. J. Pharm. Biomed. Anal., 2008, 46(3): 528
5. Ambrosi, A.; Morrin, A.; Smyth, M. R.; Killard, A. J. Anal. Chim. Acta, 2008, 609(1): 37
6. Diaz, A. F.; Kanazawa, K. K.; Gardini, G. P. J. Chem. Soc., Chem. Commun., 1979, (14): 635
7. Li, Y. F. Polymer Bulletin, 2005, (4): 51. [李永舫. 高分子通报, 2005, (4): 51]
8. Ozcan, L.; Sahin, M.; Sahin, Y. Sensors, 2008, 8(9): 5792
9. Gholivand, M. B.; Amiri, M. Electroanalysis, 2009, 21(22): 2461
10. Wang, J. S.;Wang, J. X.;Wang, Z.;Wang, S. C. Synth. Met., 2006, 156(7-8): 610
11. Mohadesi, A.; Taher, M. A. Sens. Actuators B, 2007, 123(2): 733
12. Mascaro, L. H.; Goncalves, D.; Bulhoes, L. O. S. Thin Solid Films, 2004, 461(2): 243
13. Mazurkiewicz, J. H.; Innis, P. C.;Wallace, G. G.; MacFarlane, D. R.; Forsyth, M. Synth. Met., 2003, 135(1-3): 31
14. Pringle, J. M.; Efthimiadis, J.; Howler, P. C.; Efthimiadis, J.; MacFarlane, D. R.; Chaplin, A. B.; Hall, S. B.; Officer, D. L.; Wallace, G. G. Polymer, 2004, 45(5): 1447
15. Sekiguchi, K.; Atobe, M.; Fuchigami, T. Electrochem. Commun., 2002, 4(11): 881
16. Li, M. C.; Ma, C. A.; Liu, B. Y.; Jin, Z. M. Electrochem. Commun., 2005, 7(2): 209
17. Sun, S. G.; Gong, H. Petrochemical Technology, 2001, 30(10): 806. [孙世刚, 贡辉. 石油化工, 2001, 30(10): 806]
18. Nichl, M. E.; Hu, H. Sol. Energy Mater. Sol. Cells, 2000, 63(4): 423
19. Li, M. C.; Shen, Z. L.; Ma, C. A.; Gao, Y. F. Journal of Chemical Industry and Engineering (China), 2006, 57(7): 1588
20. Yang, H.; Lu, T. H.; Xue, K. H.; Sun, S. G.; Lu, G. Q.; Chen, S. P. J. Electrochem. Soc., 1997, 144(7): 2302
21. Xue, K. H.; Cai, C. X.; Yang, H.; Zhou, Y. M.; Sun, S. G.; Chen, S. P.; Xu, G. J. Power Sources, 1998, 75(2): 207
22. Gao, Y. F.; Liu,W. H.; Li, Z. G.; Ma, C. A. Chin. J. Spectroscopy Laboratory, 2002, 19(3): 354. [高云芳, 刘文涵, 李祖光, 马淳安. 光谱实验室, 2002, 19(3): 354]
23. Kokoh, K. B.; Hahn, F.; Metayer, A.; Lamy, C. Electrochim. Acta, 2002, 47(24): 3965
24. Wang, X. Y.; Cui, X. P.; Cui, Y. M.; Jin, B. K.; Lin, X. Q. Chem. J. Chin. Univ., 2002, 23(8): 1498. [汪夏燕, 崔兴品, 崔运梅, 金葆康, 林祥钦. 高等学校化学学报, 2002, 23(8): 1498]

[1]	Yan Yang, Bowen He, Hualong Ma, Sen Yang, Zhouhong Ren, Tian Qin, Fagui Lu, Liwen Ren, Yixiao Zhang, Tianfu Wang, Xi Liu, Liwei Chen. PtRuAgCoNi High-Entropy Alloy Nanoparticles for High-Efficiency Electrocatalytic Oxidation of 5-Hydroxymethylfurfural [J]. Acta Phys. -Chim. Sin., 2022, 38(12): 2201050-.
[2]	Ya-Jie LI,Xing-Yuan NI,Jun SHEN,Dong LIU,Nian-Ping LIU,Xiao-Wei ZHOU. Preparation and Performance of Polypyrrole/Nitric Acid Activated Carbon Aerogel Nanocomposite Materials for Supercapacitors [J]. Acta Phys. -Chim. Sin., 2016, 32(2): 493-502.
[3]	ZHANG Chang, QIN Yu-Cai, GAO Xiong-Hou, ZHANG Hai-Tao, MO Zhou-Sheng, CHU Chun-Yu, ZHANG Xiao-Tong, SONG Li-Juan. Modulation of the Acidity and Catalytic Conversion Properties of Y Zeolites Modified by Cerium Cations [J]. Acta Phys. -Chim. Sin., 2015, 31(2): 344-352.
[4]	SU Jia, LU Shan, WANG Sha-Sha, ZHANG Xue-Hua, FU Yu-Bin, HE Tao. Influence of pH Values on the Structure and Performance of a Polypyrrole Counter Electrode for Dye-Sensitized Solar Cells [J]. Acta Phys. -Chim. Sin., 2014, 30(8): 1487-1494.
[5]	FAN Ren-Jie, LIN Rui, HUANG Zhen, ZHAO Tian-Tian, MA Jian-Xin. Preparation and Characterization of Pt Catalysts Supported on Cobalt-Polypyrrole-Carbon for Fuel Cells [J]. Acta Phys. -Chim. Sin., 2014, 30(7): 1259-1266.
[6]	MA Guo-Fu, MU Jing-Jing, ZHANG Zhi-Guo, SUN Kan-Jun, PENG Hui, LEI Zi-Qiang. Preparation of Polypyrrole/Sodium Alginate Nanospheres and Their Application for High-Performance Supercapacitors [J]. Acta Phys. -Chim. Sin., 2013, 29(11): 2385-2391.
[7]	SHI Qin, MEN Chun-Yan, LI Juan. Preparation and Electrochemical Capacitance Properties of Graphene Oxide/Polypyrrole Intercalation Composite [J]. Acta Phys. -Chim. Sin., 2013, 29(08): 1691-1697.
[8]	CUI Ying, KUANG Yin-Jie, ZHANG Xiao-Hua, LIU Bo, CHEN Jin-Hua. Spontaneous Deposition of Pt Nanoparticles on Poly(diallyldimethylammonium chloride)/Carbon Nanotube Hybrids and Their Electrocatalytic Oxidation of Methanol [J]. Acta Phys. -Chim. Sin., 2013, 29(05): 989-995.
[9]	YE Yong-Wei, WANG Xi, ZHENG Wan-Fang, LI Mei-Chao, MA Chun-An. Electrooxidation Reaction of 3-Bromobenzoic Acid on Pt Electrode [J]. Acta Phys. -Chim. Sin., 2013, 29(03): 553-558.
[10]	ZHOU Zhi-You, LIN Jian-Long, SHANG Shu-Jing, REN Jie, SUN Shi-Gang. Preparation of Dendritic Pt Thin Films and Their Anomalous Infrared Effects [J]. Acta Phys. -Chim. Sin., 2012, 28(07): 1745-1750.
[11]	NIE Su-Lian, ZHAO Yan-Chun, FAN Jie-Wen, TIAN Jian-Niao, NING Zhen, LI Xiao-Xiao. Highly Active Pd-Co₃O₄/MWCNTs Catalysts for Methanol Electrocatalytic Oxidation [J]. Acta Phys. -Chim. Sin., 2012, 28(04): 871-876.
[12]	ZHU Jian-Bo, XU You-Long, WANG Jie, WANG Jing-Ping. Electropolymerization and Characterization of Fast Charge-Discharge PPy/F-SWNTs Composite Materials [J]. Acta Phys. -Chim. Sin., 2012, 28(02): 373-380.
[13]	ZHU Ying-Hong, ZENG Hong-Yan, LI Shan-Shan, LU Zai-Xiang, MA Chun-An. Electrochemical Oxidation of p-Methoxy Toluene in BMIMBF4 Ionic Liquid [J]. Acta Phys. -Chim. Sin., 2012, 28(02): 421-426.
[14]	TIAN Ying, WANG Jing-Ri, LIU Ming, SHI Kun, YANG Feng-Lin. Redox Stability of Polypyrrole in Aqueous Electrolyte Solutions by a Recurrent Potential Pulse Technique [J]. Acta Phys. -Chim. Sin., 2011, 27(05): 1116-1121.
[15]	HUANG Rong, CHEN Ming-An, LU Xue-Bin. Chemical Oxidative Polymerization of Polypyrrole and Its Corrosion Resistance on the AZ31 Magnesium Alloy [J]. Acta Phys. -Chim. Sin., 2011, 27(01): 113-119.

Electrocatalytic Oxidation of Ascorbic Acid on a PPy-HEImTfa/Pt Electrode and Its Mechanism

PDF

Like

Knowledge

Abstract

Cite this article

share this article

References

Related Articles 15

Metrics

Recommended 0