期刊
BIOSENSORS & BIOELECTRONICS
卷 26, 期 8, 页码 3641-3646出版社
ELSEVIER ADVANCED TECHNOLOGY
DOI: 10.1016/j.bios.2011.02.020
关键词
Porous carbon; Interference lithography; Palladium nanoflowers; Glucose
类别
资金
- Sandia National Laboratories
- United States Department of Energy's National Nuclear Security Administration [DE-AC04-94AL85000]
- U.S. Department of Energy [DE-AC52-06NA25396]
Nonenzymatic glucose oxidation is demonstrated on highly faceted palladium nanowflower-modified porous carbon electrodes fabricated by interference lithography. Varying electrodeposition parameters were used to control the final shape and morphology of the deposited nanoparticles on the 3D porous carbon which showed a 12 times increase in the electrochemically active surface area over analogous planar electrodes. Extremely fast amperometric glucose responses (achieving 95% of the steady state limiting current in less than 5 s) with a linear range from I to 10 mM and a detection limit of 10 mu M were demonstrated. The unusual surface properties of the pyrolyzed photoresist films produced strongly adhered palladium crystal structures that were stable for hundreds of cycles towards glucose oxidation without noticeable current decay. Published by Elsevier B.V.
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