Selective colorimetric sensing of histidine in aqueous media via Ag nanotriangles in the presence of HgCl2
- PMID: 39232307
- DOI: 10.1016/j.saa.2024.125072
Selective colorimetric sensing of histidine in aqueous media via Ag nanotriangles in the presence of HgCl2
Abstract
Silver nanotriangles (AgNTs) were successfully synthesized as a colorimetric probe for selective and sensitive histidine detection in aqueous media within a 15-100 µM range and a detection limit of 330 nM using UV-Vis spectroscopy. The interaction of HgCl2 with AgNTs would lead to the formation of disk-shaped Ag/Hg amalgam as observed from the transmission electron images and X-ray diffraction patterns. Histidine prevents these structural and morphological changes and accordingly, the detection approach was developed based on the correlation between the histidine concentration and the in-plane dipole plasmon resonance (DPR) intensity.
Keywords: Histidine detection; Silver nanotriangles; Surface plasmon resonance; UV–Vis spectroscopy.
Copyright © 2024 Elsevier B.V. All rights reserved.
Conflict of interest statement
Declaration of competing interest The authors declare that they have no known competing financial interests or personal relationships that could have appeared to influence the work reported in this paper.
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