【作者】 杨娟； 赵发琼； 曾百肇；

【Author】 Juan Yang;Faiong Zhao;Baizhao Zeng;Key Laboratory of Analytical Chemistry for Biology and Medicine (Ministry of Education), College of Chemistry and Molecular Sciences, Wuhan University;

【机构】 武汉大学化学与分子科学学院；

【摘要】 采用恒电位沉积法在玻碳电极表面沉积AuPt合金纳米粒子,利用巯基与Au之间的相互作用,通过巯基乙酸对AuPt合金纳米粒子表面进行改性,得到表面带有丰富羧基的AuPt纳米粒子,再采用层层自组装的方法使ZIF-8在其表面有序生长。将得到的AuPt合金纳米粒子/ZIF-8复合膜制备成过氧化氢传感器,由于里层AuPt合金为过氧化氢的还原提供活性位点而外层ZIF-8可起分子筛的作用,以及检测中采用了较低的工作电位(-0.2 V),使得其对过氧化氢的检测既有好的选择性又有高的灵敏度(如图1)。更多还原

【Abstract】 A novel AuPt alloy nanoparticles/ZIF-8 composite film was successfully prepared through a facile layer-by-layer approach.The AuPt alloy nanoparticles were prepared by electrodeposition strategy and the highly-oriented ZIF-8 thin films were then grown on thioglycollic acid-functionalized AuPt substrate.When the AuPt alloy nanoparticles/ZIF-8 hybrid thin film was used to construct a H₂O₂ sensor, it exhibited excellent selective catalytic activity, due to the relative low applied potential（-0.2 V）, the catalysis of AuPt alloy nanoparticles and the selection of ZIF-8 molecular sieves.更多还原