摘要
以泡沫镍为基底通过一步法原位生长氧化镍,同时加入铟离子与锡离子,制备了高灵敏度无酶葡萄糖传感器敏感电极复合材料In-Sn@NiO。X射线光电子能谱(X-ray Photoelectron Spectroscopy,XPS)测试结果证明,氧化镍表面存在铟元素与锡元素。扫描电子显微镜(Scanning Electron Microscope,SEM)结果表明,掺杂铟离子与锡离子后,氧化镍表面形貌由较为致密的片状堆叠结构变成了垂直生长的纳米柱结构,结构更有利于表面粒子传输。电化学测试结果显示,掺杂后电极对葡萄糖的响应得到了显著的改善,最高灵敏度达到了91.9 mA/(μmol·L^(-1)·cm^2),检测限为0.02μmol/L。
To further improve the performance of non-enzymatic electrochemical glucose sensor, a one-step in-situ oxidation method was used to prepare nickel oxide material directly grown on nickel foam. Moreover, the indium and tin ions were doped into the nickel oxide material during the growth process, and an In-Sn@ NiO composite could be obtained. XPS measurement indicated that the indium and tin ions were successfully doped into nickel oxide material. Through the SEM images, the surface of the doped nickel oxide electrode showed a structure of nanorods instead of nanosheets. Compared with undoped material, the structures could benefit the transport of surface particles. From the results of electrochemical sensitivity test towards glucose, this electrode exhibited a remarkable performance with a sensitivity of 91.9 mA/(μmol· L-1 , cm2) and the limit of detection was 0.02 μmol/L.
作者
李嘉丹
徐红梅
赵旭
LI Jia-dan;XU Hong-mei;ZHAO Xu(Department of Electronics and Communication Engineering, College of Engineering, Yanbian University , Yanji, Jilin 133002, China;College of Chemistry, Jilin University, Changchun, Jilin 130012, China)
出处
《食品与机械》
CSCD
北大核心
2018年第1期57-61,共5页
Food and Machinery
基金
延边大学2017年度国家自然基金前期培育专项(编号:413080016)
吉林省科技发展计划项目(编号:20170414025GH)
关键词
氧化镍
电化学
无酶
葡萄糖传感器
nickel oxide
electrochemical
non-enzymatic
glucose sensor