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对乙酰氨基酚在纳米金/十二烷基苯磺酸钠修饰电极上的电化学行为研究
引用本文:王正国,邓勤,郑韵英,石海信. 对乙酰氨基酚在纳米金/十二烷基苯磺酸钠修饰电极上的电化学行为研究[J]. 化学研究与应用, 2012, 0(2): 175-180
作者姓名:王正国  邓勤  郑韵英  石海信
作者单位:钦州学院化学化工学院
基金项目:广西壮族自治区社科基金项目(2010GXNSFA013061)资助
摘    要:基于电化学沉积法制备了纳米金/十二烷基苯磺酸钠修饰玻碳电极(Nano-Au/SDBS/GCE),并采用扫描电子显微镜、X-射线光电子能谱和电化学方法进行表征。研究了对乙酰氨基酚在Nano-Au/SDBS/GCE上的伏安行为,结果表明,对乙酰氨基酚由在裸玻碳电极上的不可逆氧化过程变为准可逆过程,氧化峰峰电位由0.60 V负移至0.50 V,且在0.42 V处产生一个新的还原峰,表明nano-Au/SDBS膜能催化对乙酰氨基酚的电化学反应。在优化条件下,氧化峰峰电流与对乙酰氨基酚浓度在1.0×10-6mol/L~9.0×10-6mol.L–1和1.0×10-5~1.0×10-4mol.L–1间有良好的线性关系,检出限为8.0×10-7mol.L–1(S/N=3)。

关 键 词:对乙酰氨基酚  纳米金  十二烷基苯磺酸钠  修饰电极.

Investigation on electrochemical behavior of p-acetamidophenol at nano-Au/sodium dodecylbenzene sulfonate modified electrode
WANG Zheng-guo,DENG Qin,ZHENG Yin-yun,SHI Hai-xin. Investigation on electrochemical behavior of p-acetamidophenol at nano-Au/sodium dodecylbenzene sulfonate modified electrode[J]. Chemical Research and Application, 2012, 0(2): 175-180
Authors:WANG Zheng-guo  DENG Qin  ZHENG Yin-yun  SHI Hai-xin
Affiliation:(College of Chemistry and Chemical Engineering,Qinzhou University,Qinzhou 535000,China)
Abstract:Gold nanoparticles/sodium dodecylbenzene sulfonate modified glassy carbon electrode(nano-Au/SDBS/GCE)was fabricated with electrochemical technique.The obtained nano-Au/SDBS/GCE were characterized with transmission electronic microscopy(TEM),X-ray Photoelectron Spectroscopy(XPS)and electrochemical techniques.Electrochemical behaviors of p-acetamidophenol at the nano-Au/SDBS/GCE were investigated.Compared to voltammetric behaviors of p-acetamidophenol at the bare glassy carbon electrode,the reversibility for the electrochemical reaction of p-acetamidophenol at the nano-Au/SDBS/GCE was improved due to a quasi-reversible process occurred rather than an irreversible process.The oxidation peak potential negatively shifted from 0.60 V to 0.50V with the peak current significant increasing,and a new reduction peak was observed at 0.42 V.All results indicate that nano-Au/SDBS film can catalyze the electrochemical reaction of p-acetamidophenol.Under optimal conditions,the oxidation peak current was proportional to the p-acetamidophenol concentration in the range of 1.0×10-6~9.0 × 10-6 mol·L-1 and 1.0×10-5~1.0 × 10-4 mol·L-1.The estimated detection limit was 8.0 ×10-7 mol·L-1(S/N=3).
Keywords:p-acetamidophenol  gold nanoparticles  sodium dodecylbenzene sulfonate  modified electrode
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