Fe₃O₄-Au nanohybrids as novel SEIRA and SERS substrate for Glycine detection

Abstract

Fe₃O₄-Au hybrid nanostructures combining magnetic and plasmonic properties based on nanomagnetite and Au nanocrystals have been synthesized and characterized. The SEIRA and SERS signal enhancement of Glycine adsorbed on these hybrid nanostructures was obtained. It is shown that different molecular groups of Glycine are enhanced in different ways, depending on the type of interaction and the orientation of the molecule relative to the surface. According to the results of the research, the obtained Fe₃O₄-Au nanohybrids have the properties of plasmonic metals, while retaining ferromagnetic properties and have great potential as substrates for surface-enhanced vibration spectroscopy in trace analysis.

Keywords:

• Fe₃O₄-Au
• FTIR spectroscopy
• RAMAN spectroscopy
• Gly
• Fe₃O₄-Au-Gly

Acknowledgments

Authors thanks the National Academy of Sciences of Ukraine and the grant PH/23-2023 “Influence of size effects on the electrophysical properties of graphene ferroelectric nanostructures” of the Ministry of Education and Science of Ukraine for their support.

Disclosure statement

No potential conflict of interest was reported by the author(s).