Templated Synthesis, Characterization, and Sensing Application of Macroscopic Platinum Nanowire Network Electrodes

Authors: Wang, Donghai; Kou, Rong; Gil, Maria P.; Jakobson, Hans Peter; Tang, Jing; Yu, Donghong; Lu, Yunfeng

Source: Journal of Nanoscience and Nanotechnology, Volume 5, Number 11, November 2005 , pp. 1904-1909(6)

Publisher: American Scientific Publishers

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Abstract:

Novel platinum nanowire network electrodes have been fabricated through electrodeposition using mesoporous silica thin films as templates. These electrodes were characterized by X-ray diffraction, transmission electron microscope, and scanning electron microscope. The electrochemical properties of the electrodes, such as electrochemical active area and methanol oxidation, have also been studied. Compared with conventional polycrystalline Pt electrodes, these novel nanowire network electrodes possess high electrochemical active areas and demonstrate higher current densities and a lower onset potential for methanol electro-oxidation. Enzymatic Pt nanowire-network-based sensors show higher sensitivity for glucose detection than that using conventional polycrystalline Pt electrode. Such macroscopic nanowire network electrodes provide ideal platforms for sensing and other device applications.

Keywords: PLATINUM NANOWIRE; ELECTRODE; MESOPOROUS; ELECTRODEPOSITION; METHANOL OXIDATION; SENSORS

Document Type: Research article

DOI: 10.1166/jnn.2005.435