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

Doyeon Bang, Young Wook Chang, Joseph Park, Taeksu Lee, Jiyun Park, Jong Souk Yeo, Eun Kyung Kim, Kyung Hwa Yoo, Yong Min Huh, Seungjoo Haam

Research output: Contribution to journalArticle

11 Citations (Scopus)

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.

Original languageEnglish
Pages (from-to)4851-4857
Number of pages7
JournalJournal of Materials Chemistry A
Volume1
Issue number15
DOIs
Publication statusPublished - 2013 Apr 21

All Science Journal Classification (ASJC) codes

  • Chemistry(all)
  • Renewable Energy, Sustainability and the Environment
  • Materials Science(all)

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