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Erschienen in: Journal of Nanoparticle Research 10/2023

01.10.2023 | Research paper

Preparation of silver nanoparticles on free-standing polyaniline/cellulose acetate blend film for surface-enhanced Raman scattering application

verfasst von: Bismark Nogueira da Silva, Victor dos Santos Azevedo Leite, Frederico Garcia Pinto, Jairo Tronto, Celly Mieko Shinohara Izumi

Erschienen in: Journal of Nanoparticle Research | Ausgabe 10/2023

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Abstract

Polyaniline (PANI) has been used as a precursor for the preparation of surface-enhanced Raman scattering (SERS) substrates because of its ability to act as a reducing agent and binding site of plasmonic metal nanoparticles (NPs). However, the processability of PANI is limited due to its poor mechanical properties. In this work, a simple preparation of a free-standing polymeric blend film by mixing hydrochloric acid–doped polyaniline nanofibers (PANI) and cellulose acetate (CA) is demonstrated. This PANI/CA was used as a reducing agent for synthesizing Ag nanoparticles (AgNPs). The formation of globular NPs and cubic microstructures on the surface of the film was observed, as well as the formation of AgCl due to the presence of chloride ions in the PANI structure. The film was then treated with hydrazine to reduce AgCl to AgNPs resulting in isolated and clustered AgNPs. Rhodamine 6G dye was used as a probe molecule for SERS measurements. This new composite film PANI/CA@Ag treated with hydrazine was successfully applied as a SERS substrate. This substrate enhancement of Rhodamine 6G dye Raman bands was estimated, and the Rhodamine 6G dye could be detected even at a concentration of 10−7 mol L−1.

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Metadaten
Titel
Preparation of silver nanoparticles on free-standing polyaniline/cellulose acetate blend film for surface-enhanced Raman scattering application
verfasst von
Bismark Nogueira da Silva
Victor dos Santos Azevedo Leite
Frederico Garcia Pinto
Jairo Tronto
Celly Mieko Shinohara Izumi
Publikationsdatum
01.10.2023
Verlag
Springer Netherlands
Erschienen in
Journal of Nanoparticle Research / Ausgabe 10/2023
Print ISSN: 1388-0764
Elektronische ISSN: 1572-896X
DOI
https://doi.org/10.1007/s11051-023-05853-9

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