期刊
BIOSENSORS & BIOELECTRONICS
卷 25, 期 7, 页码 1603-1608出版社
ELSEVIER ADVANCED TECHNOLOGY
DOI: 10.1016/j.bios.2009.11.019
关键词
Glucose; Biofuel cell; Intense pulsed light; Carbon nanotubes; Photothermal dewetting
类别
资金
- NSF Center for Scalable and Integrated NanoManufacturing (SINAM) [DMI-NSEC-0327077]
- NSF IGERT [DGE-0654431]
- California NanoSystems Institute
- Directorate For Engineering [0751621] Funding Source: National Science Foundation
- Div Of Civil, Mechanical, & Manufact Inn [0751621] Funding Source: National Science Foundation
A novel method using intense pulsed light (IPL) for the metal nano-island formation on carbon nanotube (CNT) was introduced. The IPL-induced photothermal dewetting process improved platinum (Pt) catalyst utilization by transforming nano-islands from Pt film on CNT and increasing the surface area for the subsequent sputtering. The irradiation of high intensity of light on the Pt film causes surface-energy-driven diffusion of Pt atoms and forms the array of nano-islands on CNT. The thickness of Pt film can change the size of nano-islands. Cyclic voltammetry showed a dramatically improved glucose oxidation at the IPL morphology modified Pt-CNT electrode compared to the Pt sputtered CNT electrode without IPL irradiation. The power densities of glucose/air biofuel cell based on the morphology modified Pt-CNT electrode and the as-sputtered Pt-CNT electrode were 0.768 mu W/cm(2) and 0.178 mu M/cm(2), respectively. The biofuel cell based on morphology modified Pt-CNT electrode showed highly stable output in long-term performance. The power density dropped 14.1% in 30 days. Efforts are underway to improve the interface transfer to achieve higher potential and current output. (C) 2009 Elsevier B.V. All rights reserved.
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