Issue 15, 2021

Silver melamine thin film as a flexible platform for SERS analysis

Abstract

New SERS detection platforms are required for the quick and easy preparation of sensing devices for food, agriculture, and environmental science. For quantitative sensing, it is important that a sensing material, in addition to efficient sensing, provides extraction and concentration of the target molecules such as toxic pesticides or healthy vitamins. We design such films adopting the Liesegang rings formation process that includes the reaction–diffusion of silver nitrate and melamine followed by the precipitation of different intermediates and their reduction by light in a pectin medium. Surprisingly, we find that the presence of melamine provides an excellent substrate for the extraction of pollutants at the solid-liquid interface giving rise to a powerful but easy and fast method for the quantification of fruits’ quality. The complex silver and melamine containing films show high sensitivity even at relatively low silver concentrations.

Graphical abstract: Silver melamine thin film as a flexible platform for SERS analysis

Supplementary files

Article information

Article type
Paper
Submitted
02 dec 2020
Accepted
01 mrt 2021
First published
02 mrt 2021

Nanoscale, 2021,13, 7375-7380

Silver melamine thin film as a flexible platform for SERS analysis

A. Nenashkina, S. Koltsov, O. Yu. Orlova, A. A. Nikitina, D. A. Kirilenko, D. V. Andreeva, M. Blanco-Formoso, N. Pazos-Perez, R. Alvarez-Puebla and E. V. Skorb, Nanoscale, 2021, 13, 7375 DOI: 10.1039/D0NR08543J

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