Au@MOF-5衍生碳复合材料修饰电极用于维生素C的测定  

Au@MOF-5 Derived Carbon Composite Modified Electrode for Sensitive Electrochemical Detection of Vitamin C

作　　者：秦影 邹如意 刁慧婷 王青艳 万君怡 庄玲[2] QIN Ying;ZOU Ruyi;DIAO Huiting;WANG Qingyan;WAN Junyi;ZHUANG Ling

机构地区：[1]上饶师范学院化学与环境科学学院,江西上饶334001 [2]上饶师范学院物理科学与智能教育学院,江西上饶334001

出　　处：《化工设计通讯》2024年第8期151-153,共3页Chemical Engineering Design Communications

基　　金：2022年省级引导市县科技发展专项资金项目(2023AB015);校级创新训练项目(2022-PX-39);省级创新训练计划项目(S202210416004)。

摘　　要：MOF-5衍生的碳材料(CC)和氯金酸经水热过程,制备了碳载纳米金复合物(Au@CC)。用SEM和XRD对其形貌和晶相结构进行了分析。电化学性能测试表明,在pH=1的磷酸盐缓冲溶液(PBS)中,以Au@CC构建的电化学传感器(Au@CC/GCE)可增强维生素C(Vc)的电化学反应。在1.96~15.68×10^(-5)mol/L浓度范围内,差分脉冲伏安法(DPV)测定了Vc的峰电流与浓度的线性关系为:I(m A)=0.00348Ci(10-5mol/L)+0.00452(γ=0.997),检测限(LOD)为0.010×10^(-5)mol/L(S/N=3)。可用于Vc样品的检测。By hydrothermal reaction of carbon derived from MOF-5(CC)and chloro-auric acid,carbon supported gold nanocomposites(Au@CC)were prepared.The morphology and crystal phase structure of the composites were analyzed by SEM and XRD.The electrochemical performance test shows that the sensor constructed with Au@CC(Au@CC/GCE)can enhance the electrochemical reaction of vitamin C(Vc)in PBS with pH=1.In the concentration range of 1.96~15.68×10^(-5) mol/L,the linear relationship between the oxidation peak current and the concentration of Vc measured by differential pulse voltammetry(DPV)is as follows:I(mA)=0.00348Ci(10-5mol/L)+0.00452(γ=0.997),the detection limit(LOD)was 0.010×10^(-5) mol/L(S/N=3).Au@CC/GCE is suitable for the detection of Vc samples.

关 键 词：MOF-5衍生碳 电化学传感器 磷酸盐缓冲溶液 维生素C 

分 类 号：O657.1[理学—分析化学]