期刊
MICROCHIMICA ACTA
卷 181, 期 7-8, 页码 783-789出版社
SPRINGER WIEN
DOI: 10.1007/s00604-013-1142-0
关键词
Platinum-palladium; Alloy; Graphene; Nonenzymatic; Glucose sensor
资金
- Japan Society for the Promotion of Science (JSPS)
- National Natural Science Foundation of China [21305050]
- Scientific Research Foundation of Shangda Li, Jimei University, China [ZC2013005]
- Science and Technology Planning Project of Fujian Province, China [2012Y0052]
- JSPS KAKENHI [24.02335, 24550100]
- Grants-in-Aid for Scientific Research [24550100, 12F02335] Funding Source: KAKEN
We report on a nonenzymatic method for the determination of glucose using an electrode covered with graphene nanosheets (GNs) modified with Pt-Pd nanocubes (PtPdNCs). The latter were prepared on GNs by using N,N-dimethylformamide as a bifunctional solvent for the reduction of both metallic precursors and graphene oxide, and for confining the growth of PtPdNCs on the surface. The modified electrode displays strong and sensitive current response to the electrooxidation of glucose, notably at pH 7. The sensitivities increase in the order of Pt1Pd5NCs < Pt1Pd3NCs < Pt5Pd1NCs < Pt3Pd1NCs < Pt1Pd1NCs. At an applied potential of +0.25 V, the electrode responds linearly (R = 0.9987) to glucose in up to 24.5 mM concentration, with a sensitivity of 1.4 mu A cm(-2) M-1. The sensor is not poisoned by chloride, and not interfered by ascorbic acid, uric acid and p-acetamidophenol under normal physiological conditions. The modified electrode also displays a wide linear range, good stability and fast amperometric response, thereby indicating the potential of the bimetallic materials for nonenzymatic sensing of glucose.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据