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运用循环伏安法分别在0.15M吡咯(py)+0.1M氯化钾(Kcl)溶液的对氨基苯甲酸中(PAPB)和水中,在不锈钢(SS)表面制备聚吡咯(Ppy)薄膜。用循环伏安法与恒定电位法(恒电位1.5V),测试工作电极的稳定性与导电性。结果表明,单独在不锈钢表面附着聚吡咯薄膜(Ppy/SS),虽可以增强工作电极的稳定性,但工作电极的导电性减弱。而掺杂了对氨基苯甲酸的聚吡咯膜(Ppy/PAPB),能提高不锈钢复合电极的稳定性。同时,可以弥补合成单一薄膜导电性能减弱的缺点。从而将稳定性与导电性很好的结合。
Cyclic voltammetry was used to prepare polypyrrole (Ppy) films on the surface of stainless steel (SS) in aqueous solution of p-aminobenzoic acid (PAPB) and water respectively in a solution of 0.15M Py + 0.1M KCl. Cyclic voltammetry and the constant potential method (potentiostatic 1.5V), test the stability and conductivity of the working electrode. The results showed that Ppy / SS adhered on the stainless steel surface could enhance the stability of the working electrode, but the conductivity of the working electrode was weakened. The polypyrrole membrane doped with p-aminobenzoic acid (Ppy / PAPB) can improve the stability of the stainless steel composite electrode. At the same time, it can make up for the weakness of weakening the conductivity of a single thin film. Which will be a good combination of stability and conductivity.