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One-step electrochemical fabrication of vertically self-organized silver nanograss

Title
 One-step electrochemical fabrication of vertically self-organized silver nanograss 
Authors
 Doyeon Bang ; Young Wook Chang ; Seungjoo Haam ; Yong-Min Huh ; Kyung-Hwa Yoo ; Eun-Kyung Kim ; Jong-Souk Yeo ; Jiyun Park ; Taeksu Lee ; Joseph Park 
Issue Date
2013
Journal Title
 Journal of Materials Chemistry A 
ISSN
 2050-7488 
Citation
 Journal of Materials Chemistry A, Vol.1(15) : 4851~4857, 2013 
Abstract
Fabrication of one dimensional metal nanomaterials offers many beneficial aspects due to their unique size- and shape-dependent characteristics. However, facile fabrication of a robust one dimensional nanostructure has still remained a great challenge. Here, we developed a new synthetic route of one-step electrochemical deposition of silver nanograss without the assistance of a template. By applying an overpotential of −2.0 V (vs. Ag/AgCl) under aqueous alkaline conditions, silver nanograss with a slight tilt in a randomly oriented direction was spontaneously formed on the working electrode surface. Two applications that utilize advantageous features of this silver nanograss were demonstrated: (i) an efficient surface-enhanced Raman scattering substrate for a chemical sensor and (ii) an enzyme-less hydrogen peroxide sensor. Compared to silver nanowire arrays fabricated using anodized aluminum oxide (AAO) templates, the silver nanograss exhibited comparable hydrogen sensing due to its catalytic hydrogen peroxide reduction activity and produced a much stronger surface-enhanced Raman spectroscopy (SERS) signal due to its innate structure.
URI
http://ir.ymlib.yonsei.ac.kr/handle/22282913/86737
DOI
10.1039/C3TA01278F
Appears in Collections:
1. 연구논문 > 1. College of Medicine > Dept. of Radiology
Yonsei Authors
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Link
 http://pubs.rsc.org/en/content/articlelanding/2013/ta/c3ta01278f#!divAbstract
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