【摘要】 以循环伏安法在石墨电极表面电聚合制备了新型全固态邻氨基酚-邻苯二胺共聚物薄膜修饰电极,采用循环伏安法研究了此电极在H⁺的有效浓度为1.00×10¹²¹0.0 mol/L范围内的电化学响应,结果表明,还原峰电位与溶液的有效酸度分别在1.00×10¹⁰⁰.10 mol/L、0.10².00 mol/L和2.00¹0.0 mol/L 3段浓度范围内呈良好的线性响应,线性回归方程分别为E_pc=0.0456lg C（H⁺）-0.295,E_pc=0.0803C（H⁺）-0.309,E_pc=0.0278C（H⁺）-0.188。在有效酸度为1.00⁸.00 mol/L的H₂SO₄、HNO₃或者HCl O₄溶液中亦有类似的线性响应。此电极制备方法简单,酸度测试范围宽至1.00×10¹⁰¹0.0 mol/L,为开发新型高酸度固态电化学传感器奠定了基础。更多还原

【Abstract】 A new all-solid state electrode modified with poly（ o-aminophenol-co-o-phenylenediamine） film was prepared by cyclic voltammetry. The electrochemical response of the electrode to various solutions in the available acidity range of 1.00 × 10¹²-10.0 mol/L was studied by cyclic voltammetry. The results showed that the reduction peak potentials and the available acidity of solution showed good linear relationship in 3 stages of1.00×10¹⁰-0.10 mol/L,0.10-2.00 mol/L and 2.00-10.0 mol/L respectively,and the regression equations were Epc= 0.0456 lg C（ H⁺）-0.295,Epc= 0.0803 c（ H⁺）-0.309,and Epc= 0.0278 c（ H⁺）-0.188,respectively.There were similar responses in the solutions of H₂ SO₄,HNO₃ and HCl O₄ in the concentration range of 1.00-8.00 mol/L. The preparation method of electrode was simple,and the determination range of available acidity was as wide as 1. 0 × 10¹⁰-10. 0 mol/L,which laid the foundation for the development of solid-state electrochemical sensors for determination of acidity of high acidity solution.更多还原