【摘要】 制备和表征了金纳米棒-碳纳米管-氧化石墨烯复合物（AuNRs-CNTs-GO）,并将其应用于修饰玻碳电极（AuNRs-CNTs-GO/GCE）,并比较了香草醛（VA）在不同修饰电极上的电化学行为。结果表明,与其它修饰材料相比,AuNRs-CNTs-GO对香草醛有更强的电催化氧化和富集作用。利用差分脉冲伏安（DPV）法,香草醛的阳极峰电流与其浓度在0.01～0.4μmol/L和0.4～40.0μmol/L两个区间范围内呈线性关系。对应的回归方程分别为:i_pa（μA）=0.02+0.27c（μmol/L）和i_pa（μA）=0.10+0.13c（μmol/L）。检测限是2.0 nmol/L。该修饰电极可用于实际样品中香草醛的定量检测。更多还原

【Abstract】 The composite of gold nanorods(AuNRs)-carbon nanotubes(CNTs)-graphene oxide(GO)(AuNRs-CNTs-GO) was synthesized,characterized,and used to modify glassy carbon electrode.The electrochemical behavior of vanillin on different modified electrodes was investigated by cyclic voltammetry.AuNRs-CNTs-GO displayed high accumulation efficiency as well as considerable surface enhancement effect for the electro-oxidation of vanillin.Then,it was used to determine vanillin by differential pulse voltammetry(DPV).It showed two linear range of 0.02-0.4 and 0.4-40.0 μmol/L with a detection limit of 2.0 nmol/L.It can be applied to the determination of vanillin in real samples.更多还原