钙钛矿修饰玻碳电极测定铬离子

Determination of Chromium Ions with Perovskite Modified Glassy Carbon Electrode

制备了有机-无机-钙钛矿材料(C_(2)H_(7)NPbBr_(3)NCs),并用于修饰玻碳电极。使用该电极研究了Cr^(3+)的电化学行为,同时优化了Cr^(3+)浓度、溶液pH值、缓冲溶液pH值及缓冲溶液用量等实验条件。在Na_(2)HPO_(4)-C(OH)(COOH)(CH_(2)COOH)_(2)(枸橼酸)缓冲溶液(pH=5.60)中,采用循环伏安法发现,在1.0~8.0μmol·L^(-1)浓度范围内,Cr^(3+)的浓度与电流呈线性关系。所制备的修饰电极可直接用于废水中Cr^(3+)的测定,且具有较强抗干扰能力。

The organic-inorganic-perovskite material(C_(2)H_(7)NPbBr_(3)NCs)was prepared and used to modify the glass carbon electrode.By using the electrode,behavior of Cr^(3+)was studied,and the concentration of Cr^(3+),solution pH,pH of buffer solution and dosage of buffer solution were optimized.In Na_(2)HPO_(4)-C(OH)(COOH)(CH_(2)COOH)_(2)(citrate)buffer solution(pH=5.60),the concentration of Cr 3+is linearly related to the current in the range of 1.0~8.0μmol·L^(-1) with cyclic voltammetry.The modified electrode can be directly used for the determination of Cr^(3+)in waste water,and has strong anti-interference ability.