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通过电化学方法将Fe~(3+)取代的Dawson型磷钨杂多阴离子(P_2W_(17)Fe)掺杂于聚吡咯(PPY)薄膜内,制备成PPY/P_2W_(17)Fe H_2O_2传感器。研究了它对H_2O_2电化学还原过程的催化作用,催化电流与H_2O_2浓度在7.5×10~(-5)—8.0×10~(-3)mol/L范围内有良好线性关系,用于水溶液中H_2O_2浓度的测定,结果满意。
The PPy / P_2W_ (17) Fe H_2O_2 sensor was prepared by doping Pt ~ (3+) -doped Dawson-type heteropolytophosphates (P_2W_ (17) Fe) into polypyrrole (PPY) films by electrochemical method. The catalytic effect of H 2 O 2 on the electrochemical reduction of H 2 O 2 was studied. The catalytic current has a good linear relationship with the concentration of H 2 O 2 in the range of 7.5 × 10 -5 -8.0 × 10 -3 mol / L. H_2O_2 concentration, the results are satisfactory.