Improved surface-enhanced Raman scattering on electrochemically roughened silver substrates prepared in bielectrolyte solutions

Yu Chuan Liu, Cheng C. Wang, Jeng Feng Tsai

Research output: Contribution to journalArticle

5 Citations (Scopus)

Abstract

In this work, the effect of supplemental LiClO4 electrolytes in KCl solutions used in roughening silver substrates by electrochemical triangular-wave oxidation-reduction cycles (ORC) on surface-enhanced Raman scattering (SERS) was first investigated. To prepare SERS-active substrates by ORC procedures, electrolytes of KCl were generally employed. In contrast, LiClO4 ones were unsuitable for producing SERS-active substrates. Encouragingly, SERS of Rhodamine 6G (R6G) adsorbed on the roughened Ag substrate prepared in an aqueous solution containing KCl and LiClO4 electrolytes exhibits a higher intensity by one order of magnitude, as compared with that of R6G adsorbed on a roughened Ag substrate prepared in a solution only containing KCl. Further investigations indicate that the oxidation state of Cl on the roughened Ag substrate demonstrates decided effects on this improved SERS.

Original languageEnglish
Pages (from-to)433-438
Number of pages6
JournalAnalytica Chimica Acta
Volume584
Issue number2
DOIs
Publication statusPublished - Feb 19 2007
Externally publishedYes

Fingerprint

Raman Spectrum Analysis
Silver
Raman scattering
silver
scattering
substrate
Electrolytes
Substrates
electrolyte
Oxidation-Reduction
aqueous solution
oxidation
Oxidation
lithium perchlorate
rhodamine 6G

Keywords

  • Electrolytes
  • Silver Substrates
  • Surface-enhanced Raman scattering

ASJC Scopus subject areas

  • Biochemistry
  • Analytical Chemistry
  • Spectroscopy
  • Environmental Chemistry

Cite this

Improved surface-enhanced Raman scattering on electrochemically roughened silver substrates prepared in bielectrolyte solutions. / Liu, Yu Chuan; Wang, Cheng C.; Tsai, Jeng Feng.

In: Analytica Chimica Acta, Vol. 584, No. 2, 19.02.2007, p. 433-438.

Research output: Contribution to journalArticle

@article{a564ac659fff4412b7479761db6667bf,
title = "Improved surface-enhanced Raman scattering on electrochemically roughened silver substrates prepared in bielectrolyte solutions",
abstract = "In this work, the effect of supplemental LiClO4 electrolytes in KCl solutions used in roughening silver substrates by electrochemical triangular-wave oxidation-reduction cycles (ORC) on surface-enhanced Raman scattering (SERS) was first investigated. To prepare SERS-active substrates by ORC procedures, electrolytes of KCl were generally employed. In contrast, LiClO4 ones were unsuitable for producing SERS-active substrates. Encouragingly, SERS of Rhodamine 6G (R6G) adsorbed on the roughened Ag substrate prepared in an aqueous solution containing KCl and LiClO4 electrolytes exhibits a higher intensity by one order of magnitude, as compared with that of R6G adsorbed on a roughened Ag substrate prepared in a solution only containing KCl. Further investigations indicate that the oxidation state of Cl on the roughened Ag substrate demonstrates decided effects on this improved SERS.",
keywords = "Electrolytes, Silver Substrates, Surface-enhanced Raman scattering",
author = "Liu, {Yu Chuan} and Wang, {Cheng C.} and Tsai, {Jeng Feng}",
year = "2007",
month = "2",
day = "19",
doi = "10.1016/j.aca.2006.10.060",
language = "English",
volume = "584",
pages = "433--438",
journal = "Analytica Chimica Acta",
issn = "0003-2670",
publisher = "Elsevier",
number = "2",

}

TY - JOUR

T1 - Improved surface-enhanced Raman scattering on electrochemically roughened silver substrates prepared in bielectrolyte solutions

AU - Liu, Yu Chuan

AU - Wang, Cheng C.

AU - Tsai, Jeng Feng

PY - 2007/2/19

Y1 - 2007/2/19

N2 - In this work, the effect of supplemental LiClO4 electrolytes in KCl solutions used in roughening silver substrates by electrochemical triangular-wave oxidation-reduction cycles (ORC) on surface-enhanced Raman scattering (SERS) was first investigated. To prepare SERS-active substrates by ORC procedures, electrolytes of KCl were generally employed. In contrast, LiClO4 ones were unsuitable for producing SERS-active substrates. Encouragingly, SERS of Rhodamine 6G (R6G) adsorbed on the roughened Ag substrate prepared in an aqueous solution containing KCl and LiClO4 electrolytes exhibits a higher intensity by one order of magnitude, as compared with that of R6G adsorbed on a roughened Ag substrate prepared in a solution only containing KCl. Further investigations indicate that the oxidation state of Cl on the roughened Ag substrate demonstrates decided effects on this improved SERS.

AB - In this work, the effect of supplemental LiClO4 electrolytes in KCl solutions used in roughening silver substrates by electrochemical triangular-wave oxidation-reduction cycles (ORC) on surface-enhanced Raman scattering (SERS) was first investigated. To prepare SERS-active substrates by ORC procedures, electrolytes of KCl were generally employed. In contrast, LiClO4 ones were unsuitable for producing SERS-active substrates. Encouragingly, SERS of Rhodamine 6G (R6G) adsorbed on the roughened Ag substrate prepared in an aqueous solution containing KCl and LiClO4 electrolytes exhibits a higher intensity by one order of magnitude, as compared with that of R6G adsorbed on a roughened Ag substrate prepared in a solution only containing KCl. Further investigations indicate that the oxidation state of Cl on the roughened Ag substrate demonstrates decided effects on this improved SERS.

KW - Electrolytes

KW - Silver Substrates

KW - Surface-enhanced Raman scattering

UR - http://www.scopus.com/inward/record.url?scp=33846533108&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=33846533108&partnerID=8YFLogxK

U2 - 10.1016/j.aca.2006.10.060

DO - 10.1016/j.aca.2006.10.060

M3 - Article

VL - 584

SP - 433

EP - 438

JO - Analytica Chimica Acta

JF - Analytica Chimica Acta

SN - 0003-2670

IS - 2

ER -