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Updated: Sep 24, 2025
A Filter-based Surface Enhanced Raman Spectroscopic Assay for Rapid Detection of Chemical Contaminants
Published on: February 19, 2016
Adsorbate enrichment on a zeolite surface and assembly of a SERS sensor: a case study with silver nanoparticles and
Chia-Chi Huang1, Chi-Yun Cheng1, Chao-Ting Chou1
1Department of Applied Chemistry, National Chiayi University No. 300 Syuefu Rd Chiayi City 60004 Taiwan chiachihuang@mail.ncyu.edu.tw wlchen@mail.ncyu.edu.tw +886-5-2717901 +886-5-2717967 +886-5-2717965.
Abstract:
We have studied the adsorption of silver nanoparticles (AgNPs) and catechin on readily available commercial zeolite beads. Both adsorbates became available on the zeolite and were several fold more concentrated after a simple adsorption process, contributing to a 10-times overall increase in the collision probability between the two adsorbates. We were further able to detect AgNP-induced Surface Enhanced Raman Scattering (SERS) of catechin on the zeolite after sequential depositions of AgNPs and catechin on the zeolite using this process. To demonstrate high reproducibility, 93% of the zeolite sensors assembled this way were tested and proved satisfactory, and gave a distinctive catechin SERS signature. Preparation of the zeolite sensor was extremely easy with a nearly 90% yield.
