摘要
制备了金(核)铂(壳)结构纳米粒子(Au@Pt-NPs)及其Au@Pt-NPs/PVP膜修饰电极,考察该修饰电极在酸性介质中对甲醛的电催化氧化行为,研究表明金和铂之间存在协同催化作用,使Au@Pt纳米粒子比单独铂和金纳米粒子具有更高的催化活性。循环伏安行为显示修饰电极的氧化峰电流与溶液中甲醛浓度有良好的线性关系,线性范围为0.01—0.4mg/g、检出限为4μg/g,可作为甲醛的一种灵敏而快速的电化学检测方法。
Au core Pt shell nanoparticles（Au@Pt-NPs） modified electrode was prepared with PVP layer-by-layer assembly film. The electrocatalytic oxidation properties for formaldehyde of the Au @Pt-NPs modified electrode in acidic aqueous have been investigated and compared. The electrocatalytic activity are markedly enhanced for formaldehyde oxidation on the Au @Pt-NPs modified electrode, which are attributed to the cooperation between Pt and Au. The characteristics of CVs showed the electrocatalytic oxidation current had good linear range for formaldehyde with concentration from 0. 01mg to 0. 4mg/g with a detection limit of 4μg/g. modified electrode can be developed as a rapid, sensitive electrochemical So this Au @Pt-NPs detection method for formaldehyde.
出处
《光谱实验室》
CAS
CSCD
2008年第2期236-239,共4页
Chinese Journal of Spectroscopy Laboratory
基金
江苏省教育厅基金资助课题(07KJB150100)
