Silver-Coated Zeolite Crystal Films as Surface-Enhanced Raman Scattering Substrates

Wenfu Yan; Lili Bao; Shannon M. Mahurin; Sheng Dai

doi:10.1366/000370204322729423

Silver-Coated Zeolite Crystal Films as Surface-Enhanced Raman Scattering Substrates

Wenfu Yan, Lili Bao, Shannon M. Mahurin, Sheng Dai

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

23 Scopus citations

Abstract

Silver-coated zeolite A and zeolite NaX crystal films prepared by vacuum deposition were investigated as surface-enhanced Raman scattering (SERS) substrates. The substrates were active for the enhancement of Raman scattering from uranyl ions. A detection limit of 10 ^-5 M for uranyl was obtained using silver-coated zeolite A films. One advantage of these zeolite-based substrates is that the negatively charged microporous framework provides the selectivity for adsorption based on static electric charges. The SERS effects of positively charged uranyl ions and neutrally charged benzoic acid were compared. For the zeolite A substrate, there was a 100-timesgreater sensitivity.

Original language	English
Pages (from-to)	18-25
Number of pages	8
Journal	Applied Spectroscopy
Volume	58
Issue number	1
DOIs	https://doi.org/10.1366/000370204322729423
State	Published - Jan 2004

Keywords

Films
Nanocrystals
SERS
Surface-enhanced Raman scattering
Zeolites

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title = "Silver-Coated Zeolite Crystal Films as Surface-Enhanced Raman Scattering Substrates",

abstract = "Silver-coated zeolite A and zeolite NaX crystal films prepared by vacuum deposition were investigated as surface-enhanced Raman scattering (SERS) substrates. The substrates were active for the enhancement of Raman scattering from uranyl ions. A detection limit of 10 -5 M for uranyl was obtained using silver-coated zeolite A films. One advantage of these zeolite-based substrates is that the negatively charged microporous framework provides the selectivity for adsorption based on static electric charges. The SERS effects of positively charged uranyl ions and neutrally charged benzoic acid were compared. For the zeolite A substrate, there was a 100-timesgreater sensitivity.",

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AU - Bao, Lili

AU - Mahurin, Shannon M.

AU - Dai, Sheng

PY - 2004/1

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N2 - Silver-coated zeolite A and zeolite NaX crystal films prepared by vacuum deposition were investigated as surface-enhanced Raman scattering (SERS) substrates. The substrates were active for the enhancement of Raman scattering from uranyl ions. A detection limit of 10 -5 M for uranyl was obtained using silver-coated zeolite A films. One advantage of these zeolite-based substrates is that the negatively charged microporous framework provides the selectivity for adsorption based on static electric charges. The SERS effects of positively charged uranyl ions and neutrally charged benzoic acid were compared. For the zeolite A substrate, there was a 100-timesgreater sensitivity.

AB - Silver-coated zeolite A and zeolite NaX crystal films prepared by vacuum deposition were investigated as surface-enhanced Raman scattering (SERS) substrates. The substrates were active for the enhancement of Raman scattering from uranyl ions. A detection limit of 10 -5 M for uranyl was obtained using silver-coated zeolite A films. One advantage of these zeolite-based substrates is that the negatively charged microporous framework provides the selectivity for adsorption based on static electric charges. The SERS effects of positively charged uranyl ions and neutrally charged benzoic acid were compared. For the zeolite A substrate, there was a 100-timesgreater sensitivity.

KW - Films

KW - Nanocrystals

KW - SERS

KW - Surface-enhanced Raman scattering

KW - Zeolites

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Silver-Coated Zeolite Crystal Films as Surface-Enhanced Raman Scattering Substrates

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Keywords

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