基于一步法构建的无酶传感器检测过氧化物的研究
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摘要
本文采用一步电沉积法制备铜纳米粒子(CuNPs)-碳纳米管(CNTs)纳米复合材料修饰的泡沫镍(Ni foam)电极。运用扫描电镜(SEM)和能谱仪(EDS)对复合纳米材料进行了表征。通过循环伏安法(CV)、交流阻抗法(EIS)和计时电流法(I-t)对传感器的制备过程和电化学性能进行了探究,并对H_2O_2、过氧化氢叔丁基(BHP)、过氧化氢异丙苯(CHP)进行了分析测定。该传感器对H_2O_2的线性检测范围为5.0×10~(-7)～3.4×10~(-4) mol/L,检出限为2.4×10~(-7) mol/L;对BHP的线性检测范围为9.0×10-5～2.5×10~(-3) mol/L,检出限为5.8×10~(-5) mol/L;对CHP的线性检测范围为5.0×10~(-5)～1.6×10~(-3) mol/L,检出限为3.5×10~(-5) mol/L。
One-step electrodeposition method was used to prepare copper nanoparticles(CuNPs)-carbon nanotubes(CNTs)nanocomposites modified foamed nickel electrode. The nanocomposites were characterized by scanning electron microscopy(SEM)and energy dispersive spectroscopy(EDS).The preparation process and electrochemical performances of the sensor were investigated by cyclic voltammetry,electrochemical impedance spectroscopy and chronoamperometry.The sensor were used for the detection of hydrogen peroxide,tert-butyl hydroperoxide(BHP),and cumene hydroperoxide(CHP).The linear ranges of the sensor were 5.0×10~(-7)-3.4×10~(-4) mol/L for hydrogen peroxide,9.0×10~(-5)-2.5×10~(-3) mol/L for tert-butyl hydroperoxide and 5.0×10~(-5)-1.6×10~(-3) mol/L for cumene hydroperoxide with detection limits of 2.4×10~(-7) mol/L,5.8×10~(-5) mol/L and 3.5×10~(-5) mol/L,respectively.
One-step electrodeposition method was used to prepare copper nanoparticles(CuNPs)-carbon nanotubes(CNTs)nanocomposites modified foamed nickel electrode. The nanocomposites were characterized by scanning electron microscopy(SEM)and energy dispersive spectroscopy(EDS).The preparation process and electrochemical performances of the sensor were investigated by cyclic voltammetry,electrochemical impedance spectroscopy and chronoamperometry.The sensor were used for the detection of hydrogen peroxide,tert-butyl hydroperoxide(BHP),and cumene hydroperoxide(CHP).The linear ranges of the sensor were 5.0×10~(-7)-3.4×10~(-4) mol/L for hydrogen peroxide,9.0×10~(-5)-2.5×10~(-3) mol/L for tert-butyl hydroperoxide and 5.0×10~(-5)-1.6×10~(-3) mol/L for cumene hydroperoxide with detection limits of 2.4×10~(-7) mol/L,5.8×10~(-5) mol/L and 3.5×10~(-5) mol/L,respectively.
引文
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