期刊
BIOSENSORS & BIOELECTRONICS
卷 52, 期 -, 页码 105-110出版社
ELSEVIER ADVANCED TECHNOLOGY
DOI: 10.1016/j.bios.2013.08.038
关键词
Network film electrode; Nonenzymatic glucose sensing; Glucose/O-2 fuel cell; Ultrathin Au nanowires
类别
资金
- National Natural Science Foundation of China [21305041, 21075036, 21175042, 20975038, 21275052]
- Program for Science and Technology Innovative Research Team in Higher Educational Institutions of Hunan Province
- Start-Up Fund for Young Teachers in Hunan Normal University
We report here on the facile fabrication of network film electrodes with ultrathin Au nanowires (AuNWs) and their electrochemical applications for high-performance nonenzymatic glucose sensing and glucose/O-2 fuel cell under physiological conditions (pH 7.4, containing 0.15 M Cl-). AuNWs with an average diameter of similar to 7 or 2 nm were prepared and can self-assemble into robust network films on common electrodes. The network film electrode fabricated with 2-nm AuNWs exhibits high sensitivity (56.0 mu A cm(-2) mM(-1)), low detection limit (20 mu M), short response time (within 10 s), excellent selectivity, and good storage stability for nonenzymatic glucose sensing. Glucose/O-2 fuel cells were constructed using network film electrodes as the anode and commercial Pt/C catalyst modified glassy carbon electrode as cathode. The glucose/O-2 fuel cell using 2-nm AuNWs as anode catalyst output a maximum power density of is 126 mu W cm(-2), an open-circuit cell voltage of 0.425 V, and a short-circuit current density of 1.34 mA cm(-2), respectively. Due to the higher specific electroactive surface area of 2-nm AuNWs, the network film electrode fabricated with 2-nm AuNWs exhibited higher electrocatalytic activity toward glucose oxidation than the network film electrode fabricated with 7-nm AuNWs. The network film electrode exhibits high electrocatalytic activity toward glucose oxidation under physiological conditions, which is helpful for constructing implantable electronic devices. (C) 2013 Elsevier B.V. All rights reserved.
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