Studies on Electrochemical Generation System of Superoxide Free Radical

Abstract

Abstract: A mercury-free solid electrode system for the electrochemical generation of O ·- 2 was described. The effects of pH, the amount of the surfactant and electrode materials on the reduction of O₂ were investigated. The electrogeneration of O ·- 2 was only obtained at the Pt electrode in this medium system. The different electrochemical behaviour of O₂ at Pt electrode and Au electrode were explained in terms of the different adsorptions of DSAB, which was confirmed by quartz crystal microbalance(QCM). The frequency responses for the reduction of O₂ at Pt electrode and Au electrodes were compared by electrochemical quartz crystal microbalance(EQCM), suggesting that the electrogenerated O ·- 2 was adsorbed on the surface of the Pt electrode. The one-electron reduction of oxygen in this system was also confirmed by using chronocoulometry. The scavenging activities of two kinds of antioxidants(ascorbic acid and cysteine) were examined and compared.

Key words: Superoxide free radical, Electrochemical generation, Surfactant, Quartz crystal microbalance

CLC Number:

O657.15

TrendMD:

WEI Ying-Liang, WANG Ya-Zhen, HU Sheng-Shui . Studies on Electrochemical Generation System of Superoxide Free Radical[J]. Chem. J. Chinese Universities, 2004, 25(1): 148.

[1]	QIAO Zhenghua, FAN Qi, HAO Jingcheng. Silicone Surfactant-enhanced Dual Networks and High Temperature Resistance Porous Silicone Elastomers [J]. Chem. J. Chinese Universities, 2022, 43(10): 20220384.
[2]	HAN Yixiu, WU Dianguo, LI Hongpu, YIN Hongyao, MEI Yongjun, FENG Yujun, ZHONG Zuqin. Interactions Between Hydrophobic Associating Poly（sodium acrylate） and a Zwitterionic Surfactant in Non-aqueous Media and Low Temperature Environment [J]. Chem. J. Chinese Universities, 2021, 42(6): 2056.
[3]	HU Xueyi, HAN Lulu, FANG Yun, XIA Yongmei. Admicelles and Adsolubilization of Extended Surfactants on Alumina [J]. Chem. J. Chinese Universities, 2021, 42(3): 843.
[4]	ZHANG Xuan,ZHANG Tianci,JIANG Ping,GE Jijiang,ZHANG Guicai. Enhancement of CO₂ Foam Stability with Modified Silica Nanoparticles in High Salinity Brine ^† [J]. Chem. J. Chinese Universities, 2020, 41(5): 1076.
[5]	JI Lei,GUO Fanzuo,WANG Kehan,WANG Lei. Surfactant-assisted Formation of Nanoporous Pt Particles as Co-catalyst Loaded on P25 and Enhanced Photocatalytic Performance^† [J]. Chem. J. Chinese Universities, 2019, 40(7): 1501.
[6]	YANG Yihan,WANG Dong,ZHANG Zhang,XU Yan. Activation of Esterification Activity of Rhizopus Chinensis Lipase in Organic Media by Surfactant^† [J]. Chem. J. Chinese Universities, 2018, 39(9): 1948.
[7]	YANG Jiarui, WANG Yifu, WANG Jilin, WANG Lulu, FENG Ruijiang. In situ Initiation, Polymerization and Construction of Cationic Active Sites of Gemini Molecules in Polysulfone Substrates^† [J]. Chem. J. Chinese Universities, 2018, 39(8): 1829.
[8]	DONG Shigang, GAO Yingbo, GUAN Zichao, WANG Haipeng, WANG Xia, DU Ronggui, SONG Guangling. Inhibition Effect of Polyvinylpyrrolidone on Corrosion of Reinforcing Steel in Simulated Concrete Pore Solutions^† [J]. Chem. J. Chinese Universities, 2018, 39(6): 1260.
[9]	LONG Shijun,CHEN Mingmin,ZHAO Youjiao,WANG Xiaotao,LI Xuefeng,LIAO Yonggui. Regulation of Gemini Surfactant on Photochromic Behavior of PVA Dispersed Spiropyran Organogel Thin Film^† [J]. Chem. J. Chinese Universities, 2018, 39(5): 1078.
[10]	YIN Jinchao, CHEN Yukai, JIANG Jianzhong, CUI Zhenggang. Synthesis and Properties of pH and Redox Dual-switchable Surfactant^† [J]. Chem. J. Chinese Universities, 2017, 38(9): 1645.
[11]	XU Hongmei, LI Jie, QIAO Yunfan, ZHANG Min, ZHANG Hongyang, WANG Yuerong, HU Ping. Dispersion of Single-wall Carbon Nanotubes in Bile Salt Surfactants and Separation of SWCNTs(6,5) by Aqueous Two-phase Extraction^† [J]. Chem. J. Chinese Universities, 2017, 38(7): 1148.
[12]	LI Dan, WU Qian, LIU Li, SUN Xiaori, GUO Meng, FENG Yimin. Preparation and Stability of Gemini Surfactant Modified Gold Nanofluids^† [J]. Chem. J. Chinese Universities, 2017, 38(10): 1829.
[13]	WANG Yifu, DONG Jinxin, WANG Jilin, WANG Lulu, FENG Ruijiang. Ordered Self-assembly of Gemini Molecules in Mesoporous Silica Channels Constructing Normal Micelles to Assist the Migration of OH-† [J]. Chem. J. Chinese Universities, 2017, 38(1): 141.
[14]	GUO Haiquan, MA Xiaoye, JIN Rizhe, KANG Chuanqing, QIU Xuepeng, GAO Lianxun. Preparation and Properties of Nanocomposites Based on Polyimide and Polyfluorinated Surfactant-pillared Layered Double Hydroxide^† [J]. Chem. J. Chinese Universities, 2016, 37(2): 403.
[15]	CAO Xulong, HU Yue, SONG Xinwang, ZHU Yangwen, HAN Yugui, WANG Kunpeng, GUO Dongsheng, LIU Yu. Interaction of Anionic Polyacrylamide with Cationic Surfactants^† [J]. Chem. J. Chinese Universities, 2015, 36(2): 395.

Studies on Electrochemical Generation System of Superoxide Free Radical

PDF (PC)

Knowledge

Abstract

Cite this article

share this article

References

Related Articles 15

Recommended Articles

Metrics

Comments