標題: Conformal deposition of Pt on titania nanotubes to produce a bio-electrode for neuro-stimulating applications
作者: Wu, Yi-Jia
Chung, Tsai-Wei
Huang, Jun-Qian
Wu, Pu-Wei
Chen, Po-Chun
Lee, Jyh-Fu
Chan, Ting-Shan
材料科學與工程學系
Department of Materials Science and Engineering
關鍵字: Titania;Nanotube array;Pt;Electroless deposition;Bio-electrode
公開日期: 1-Mar-2018
摘要: We develop an alkaline electroless bath for deposition of a conformal Pt layer 40 nm thick on titania nanotubes 800 nm long. The charge storage capacity (CSC) and electrochemically active surface area (ECSA) of this Pt-coated titania nanotube array have been studied to evaluate its potential as a bio-electrode for implantable bioelectronic devices. Images from electron microscopes confirm the formation of a uniform Pt film on both the internal and external surfaces of the nanotubes. The X-ray diffraction pattern indicates a preferred (111) orientation. Analysis from X-ray absorption spectroscopy on the plating bath suggests a reduction sequence of Pt4+ -> Pt2+ -> Pt. The Pt-coated titania nanotube array has large CSC and ECSA values, attributed to the hollow tubular nanostructure with a conformal Pt coating.
URI: http://dx.doi.org/10.1016/j.elecom.2018.01.019
http://hdl.handle.net/11536/144623
ISSN: 1388-2481
DOI: 10.1016/j.elecom.2018.01.019
期刊: ELECTROCHEMISTRY COMMUNICATIONS
Volume: 88
起始頁: 61
結束頁: 66
Appears in Collections:Articles