碳布-聚苯胺复合材料的制备及电化学检测对硝基苯酚

The synthesis of carbon cloth-polyaniline composite and the electrochemical detection of p-nitrophenol

以碳布(CC)作为导电基底,通过恒电流法将聚苯胺(PANI)沉积在CC表面,制备了CC-PANI复合材料。采用X射线光电子能谱对CC-PANI样品的表面成分进行分析,证明了PANI的存在;采用循环伏安法和差分脉冲伏安法研究了对硝基苯酚(4-NP)在CC-PANI电极上的电化学行为。结果表明,在4-NP浓度为1~1000μmol/L的线性范围内,电流与4-NP浓度呈良好线性关系,检出限为0.36μmol/L。将CCPANI用于实际样品的检测,回收率和相对标准偏差分别为93.2%~94.8%和0.93%~3.7%。

CC-PANI composites were synthesized via depositing polyaniline(PANI)on the surface of carbon cloth(CC)using galvanostatic method by CC as conductive substrate.The surface composition of CC-PANI sample was analyzed by X-ray photoelectron spectrascopy,proving the existence of PANI.The electrochemical behavior of p-nitrophenol(4-NP)on CC-PANI was investigated by cyclic voltammetry and differential pulse voltammetry.The current showed a linear relationship with concentrations of 4-NP in the range of 1 to 1000μmol/L with the detection limit of 0.36μmol/L.The CC-PANI electrode was used to detect real samples and the recoveries and relative standard deviations were 93.2%-94.8%and 0.93%-3.7%,respectively.