Bimetallic Au-Ag on a Patterned Substrate Derived from Discarded Blu-ray Discs: Simple, Inexpensive, Stable, and Reproducible Surface-Enhanced Raman Scattering Substrates.

Langmuir : the ACS Journal of Surfaces and Colloids
Aroonsri Ngamaroonchote, Kullavadee Karn-Orachai

Abstract

A simple and reproducible surface enhanced Raman scattering (SERS) substrate of bimetallic gold-silver (Au-Ag) based on discarded a Blu-ray disc read only memory (BD-ROM) was developed by simply incorporating electrochemical (EC) treatment and chemical reaction. The resurfaced AgBD-ROM substrate (r-AgBD-ROM) was fabricated by EC treatment on a Ag film layer in BD-ROM (AgBD-ROM) to generate silver nanoparticles (AgNPs) on the indented pattern surface. Then, galvanic displacement reaction of Au and Ag was carried out to prepare the bimetallic Au-Ag structure (Au-r-AgBD-ROM). The suitable size and density as well as location of NPs on the surface can be tuned via EC treatment conditions to obtain highly active SERS performance. The SERS enhancement phenomenon on our developed substrate was studied by observing the location of the SERS hot spot obtained by Raman mapping. The developed SERS substrate offers excellent stability (90 days), good uniformity [6.14% relative standard deviation (RSD)], and reproducibility (3.79% of RSD). Moreover, this substrate can be used as a promising sensor for detecting acetaminophen, ibuprofen, and mefenamic acid. This finding suggests a simple and low-priced process, which potentially facilitates f...Continue Reading

References

Feb 3, 2011·Nano Letters·Fu Min HuangJeremy J Baumberg
Mar 8, 2011·ACS Applied Materials & Interfaces·Sivashankar KrishnamoorthyHong Yee Low
Sep 29, 2012·Biosensors & Bioelectronics·Ying WenHai-Feng Yang
Jan 4, 2013·ACS Applied Materials & Interfaces·Tae Yoon JeonSeung-Man Yang
Apr 18, 2016·Analytical and Bioanalytical Chemistry·Michél K NieuwoudtM Cather Simpson

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