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 | |
| Publication status | Published - Jul 21 2011 |
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ASJC Scopus subject areas
- Physical and Theoretical Chemistry
- Electronic, Optical and Magnetic Materials
- Surfaces, Coatings and Films
- Energy(all)
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Preparation of surface-enhanced raman scattering-active Au/Al 2O3 colloids by sonoelectrochemical methods. / Mai, Fu Der; Yu, Chung Chin; Liu, Yu Chuan; Yang, Kuang Hsuan; Juang, Ming Yu.
In: Journal of Physical Chemistry C, Vol. 115, No. 28, 21.07.2011, p. 13660-13666.Research output: Contribution to journal › Article
}
TY - JOUR
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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U2 - 10.1021/jp203931r
DO - 10.1021/jp203931r
M3 - Article
VL - 115
SP - 13660
EP - 13666
JO - Journal of Physical Chemistry C
JF - Journal of Physical Chemistry C
SN - 1932-7447
IS - 28
ER -