Preparation of surface-enhanced raman scattering-active Au/Al 2O3 colloids by sonoelectrochemical methods

Fu Der Mai; Chung Chin Yu; Yu Chuan Liu; Kuang Hsuan Yang; Ming Yu Juang

doi:10.1021/jp203931r

Preparation of surface-enhanced raman scattering-active Au/Al ₂O₃ colloids by sonoelectrochemical methods

Fu Der Mai, Chung Chin Yu, Yu Chuan Liu, Kuang Hsuan Yang, Ming Yu Juang

Research output: Contribution to journal › Article › peer-review

15 Citations (Scopus)

Abstract

As shown in the literature, surface-enhanced Raman scattering (SERS)-active Au or Ag nanoparticle films in agglomerated states on substrates were generally prepared by salting-out the colloidal solutions with NaClO₄ or NaCl. In this work, we report a new pathway to prepare SERS-active Au/Al ₂O₃ colloids by sonoelectrochemical methods. The prepared colloids demonstrate strong SERS effects on substrates without an additional salting-out procedure. The particle size of prepared Au nanoparticles (NPs) coated on Al₂O₃ NPs is ca. 20 nm in diameter. Experimental results indicate that the synthesized SERS-active Au/Al₂O ₃ colloids demonstrate a large Raman scattering enhancement for Rhodamine 6G with a detection limit of 2 × 10^-10 M, which is lower than most of those shown in the literature based on Au NPs.

Original language	English
Pages (from-to)	13660-13666
Number of pages	7
Journal	Journal of Physical Chemistry C
Volume	115
Issue number	28
DOIs	https://doi.org/10.1021/jp203931r
Publication status	Published - Jul 21 2011

ASJC Scopus subject areas

Physical and Theoretical Chemistry
Electronic, Optical and Magnetic Materials
Surfaces, Coatings and Films
Energy(all)

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title = "Preparation of surface-enhanced raman scattering-active Au/Al 2O3 colloids by sonoelectrochemical methods",

abstract = "As shown in the literature, surface-enhanced Raman scattering (SERS)-active Au or Ag nanoparticle films in agglomerated states on substrates were generally prepared by salting-out the colloidal solutions with NaClO4 or NaCl. In this work, we report a new pathway to prepare SERS-active Au/Al 2O3 colloids by sonoelectrochemical methods. The prepared colloids demonstrate strong SERS effects on substrates without an additional salting-out procedure. The particle size of prepared Au nanoparticles (NPs) coated on Al2O3 NPs is ca. 20 nm in diameter. Experimental results indicate that the synthesized SERS-active Au/Al2O 3 colloids demonstrate a large Raman scattering enhancement for Rhodamine 6G with a detection limit of 2 × 10-10 M, which is lower than most of those shown in the literature based on Au NPs.",

author = "Mai, {Fu Der} and Yu, {Chung Chin} and Liu, {Yu Chuan} and Yang, {Kuang Hsuan} and Juang, {Ming Yu}",

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T1 - Preparation of surface-enhanced raman scattering-active Au/Al 2O3 colloids by sonoelectrochemical methods

AU - Mai, Fu Der

AU - Yu, Chung Chin

AU - Liu, Yu Chuan

AU - Yang, Kuang Hsuan

AU - Juang, Ming Yu

PY - 2011/7/21

Y1 - 2011/7/21

N2 - As shown in the literature, surface-enhanced Raman scattering (SERS)-active Au or Ag nanoparticle films in agglomerated states on substrates were generally prepared by salting-out the colloidal solutions with NaClO4 or NaCl. In this work, we report a new pathway to prepare SERS-active Au/Al 2O3 colloids by sonoelectrochemical methods. The prepared colloids demonstrate strong SERS effects on substrates without an additional salting-out procedure. The particle size of prepared Au nanoparticles (NPs) coated on Al2O3 NPs is ca. 20 nm in diameter. Experimental results indicate that the synthesized SERS-active Au/Al2O 3 colloids demonstrate a large Raman scattering enhancement for Rhodamine 6G with a detection limit of 2 × 10-10 M, which is lower than most of those shown in the literature based on Au NPs.

AB - As shown in the literature, surface-enhanced Raman scattering (SERS)-active Au or Ag nanoparticle films in agglomerated states on substrates were generally prepared by salting-out the colloidal solutions with NaClO4 or NaCl. In this work, we report a new pathway to prepare SERS-active Au/Al 2O3 colloids by sonoelectrochemical methods. The prepared colloids demonstrate strong SERS effects on substrates without an additional salting-out procedure. The particle size of prepared Au nanoparticles (NPs) coated on Al2O3 NPs is ca. 20 nm in diameter. Experimental results indicate that the synthesized SERS-active Au/Al2O 3 colloids demonstrate a large Raman scattering enhancement for Rhodamine 6G with a detection limit of 2 × 10-10 M, which is lower than most of those shown in the literature based on Au NPs.

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Preparation of surface-enhanced raman scattering-active Au/Al ₂O₃ colloids by sonoelectrochemical methods

Abstract

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