Carbon fiber cloth-supported Au nanodendrites as a rugged surface-enhanced Raman scattering substrate and electrochemical sensing platform

Pham Khac Duy, Pham Thi Hai Yen, Seulah Chun, Vu Thi Thu Ha, Hoeil Chung

Research output: Contribution to journalArticle

16 Citations (Scopus)

Abstract

A carbon fiber cloth (CFC)-supported Au nanodendrite (CFC-AuND) prepared by simple electrodeposition of Au onto CFC has been demonstrated. The motivation of employing CFC was to fully incorporate its useful characteristics of flexibility, porosity, and conductivity in the development of substrates versatile for both surface-enhanced Raman scattering (SERS) and electrochemical measurements. To improve sample representation in SERS measurement, a wide area coverage (WAC) scheme able to cover an area of 28.3 mm2 (illumination diameter: 6 mm) was used to compensate for the variation in Raman intensities of analytes adsorbed at different locations on the substrate. When a 1 nM 2-naphthalenethiol sample was measured using CFC-AuND, the corresponding Raman peaks were clearly observed and the substrate-to-substrate reproducibility of five separately prepared substrates was acceptable, with the relative standard deviation (RSD) of 8.5%. In addition, since the substrate was physically flexible, its SERS performance was not seriously degraded even after moderate bending. Next, the CFC-AuND substrate was used for the electrochemical detection of Hg(II) in aqueous samples by means of stripping voltammetry. The limit of detection (LOD) was 0.09 ppb and the substrate-to-substrate reproducibility was also superior, with RSDs below 3.6%. Overall, the results of the present work demonstrate the potential of CFC-AuND as a rugged, field-usable, cost-effective substrate for SERS and electrochemical measurements.

Original languageEnglish
Pages (from-to)377-383
Number of pages7
JournalSensors and Actuators, B: Chemical
Volume225
DOIs
StatePublished - 2016 Mar 31

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carbon fibers
Carbon fibers
Raman scattering
platforms
Raman spectra
Substrates
carbon fiber
Voltammetry
stripping
Electrodeposition
electrodeposition
standard deviation
flexibility
Porosity
Lighting
illumination
costs
porosity
conductivity

Keywords

  • Carbon fiber cloth
  • Gold nanodendrite
  • Mercury detection
  • Nanodendrite network porous structure
  • Surface enhanced Raman scattering (SERS)

Cite this

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abstract = "A carbon fiber cloth (CFC)-supported Au nanodendrite (CFC-AuND) prepared by simple electrodeposition of Au onto CFC has been demonstrated. The motivation of employing CFC was to fully incorporate its useful characteristics of flexibility, porosity, and conductivity in the development of substrates versatile for both surface-enhanced Raman scattering (SERS) and electrochemical measurements. To improve sample representation in SERS measurement, a wide area coverage (WAC) scheme able to cover an area of 28.3 mm2 (illumination diameter: 6 mm) was used to compensate for the variation in Raman intensities of analytes adsorbed at different locations on the substrate. When a 1 nM 2-naphthalenethiol sample was measured using CFC-AuND, the corresponding Raman peaks were clearly observed and the substrate-to-substrate reproducibility of five separately prepared substrates was acceptable, with the relative standard deviation (RSD) of 8.5{\%}. In addition, since the substrate was physically flexible, its SERS performance was not seriously degraded even after moderate bending. Next, the CFC-AuND substrate was used for the electrochemical detection of Hg(II) in aqueous samples by means of stripping voltammetry. The limit of detection (LOD) was 0.09 ppb and the substrate-to-substrate reproducibility was also superior, with RSDs below 3.6{\%}. Overall, the results of the present work demonstrate the potential of CFC-AuND as a rugged, field-usable, cost-effective substrate for SERS and electrochemical measurements.",
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Carbon fiber cloth-supported Au nanodendrites as a rugged surface-enhanced Raman scattering substrate and electrochemical sensing platform. / Duy, Pham Khac; Yen, Pham Thi Hai; Chun, Seulah; Ha, Vu Thi Thu; Chung, Hoeil.

In: Sensors and Actuators, B: Chemical, Vol. 225, 31.03.2016, p. 377-383.

Research output: Contribution to journalArticle

TY - JOUR

T1 - Carbon fiber cloth-supported Au nanodendrites as a rugged surface-enhanced Raman scattering substrate and electrochemical sensing platform

AU - Duy, Pham Khac

AU - Yen, Pham Thi Hai

AU - Chun, Seulah

AU - Ha, Vu Thi Thu

AU - Chung, Hoeil

PY - 2016/3/31

Y1 - 2016/3/31

N2 - A carbon fiber cloth (CFC)-supported Au nanodendrite (CFC-AuND) prepared by simple electrodeposition of Au onto CFC has been demonstrated. The motivation of employing CFC was to fully incorporate its useful characteristics of flexibility, porosity, and conductivity in the development of substrates versatile for both surface-enhanced Raman scattering (SERS) and electrochemical measurements. To improve sample representation in SERS measurement, a wide area coverage (WAC) scheme able to cover an area of 28.3 mm2 (illumination diameter: 6 mm) was used to compensate for the variation in Raman intensities of analytes adsorbed at different locations on the substrate. When a 1 nM 2-naphthalenethiol sample was measured using CFC-AuND, the corresponding Raman peaks were clearly observed and the substrate-to-substrate reproducibility of five separately prepared substrates was acceptable, with the relative standard deviation (RSD) of 8.5%. In addition, since the substrate was physically flexible, its SERS performance was not seriously degraded even after moderate bending. Next, the CFC-AuND substrate was used for the electrochemical detection of Hg(II) in aqueous samples by means of stripping voltammetry. The limit of detection (LOD) was 0.09 ppb and the substrate-to-substrate reproducibility was also superior, with RSDs below 3.6%. Overall, the results of the present work demonstrate the potential of CFC-AuND as a rugged, field-usable, cost-effective substrate for SERS and electrochemical measurements.

AB - A carbon fiber cloth (CFC)-supported Au nanodendrite (CFC-AuND) prepared by simple electrodeposition of Au onto CFC has been demonstrated. The motivation of employing CFC was to fully incorporate its useful characteristics of flexibility, porosity, and conductivity in the development of substrates versatile for both surface-enhanced Raman scattering (SERS) and electrochemical measurements. To improve sample representation in SERS measurement, a wide area coverage (WAC) scheme able to cover an area of 28.3 mm2 (illumination diameter: 6 mm) was used to compensate for the variation in Raman intensities of analytes adsorbed at different locations on the substrate. When a 1 nM 2-naphthalenethiol sample was measured using CFC-AuND, the corresponding Raman peaks were clearly observed and the substrate-to-substrate reproducibility of five separately prepared substrates was acceptable, with the relative standard deviation (RSD) of 8.5%. In addition, since the substrate was physically flexible, its SERS performance was not seriously degraded even after moderate bending. Next, the CFC-AuND substrate was used for the electrochemical detection of Hg(II) in aqueous samples by means of stripping voltammetry. The limit of detection (LOD) was 0.09 ppb and the substrate-to-substrate reproducibility was also superior, with RSDs below 3.6%. Overall, the results of the present work demonstrate the potential of CFC-AuND as a rugged, field-usable, cost-effective substrate for SERS and electrochemical measurements.

KW - Carbon fiber cloth

KW - Gold nanodendrite

KW - Mercury detection

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JO - Sensors and Actuators, B: Chemical

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