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Facile room temperature deposition of gold nanoparticle-ionic liquid hybrid film on silica substrate

DOI: 10.1016/j.saa.2016.07.004 DOI Help

Authors: S. Krishnamurthy (Chonbuk National University) , D. Harikishore Kumar Reddy (Chonbuk National University) , G. Sankar (University College London) , Yeoung-sang Yun (Chonbuk National University)
Co-authored by industrial partner: No

Type: Journal Paper
Journal: Spectrochimica Acta Part A: Molecular And Biomolecular Spectroscopy , VOL 170 , PAGES 48 - 55

State: Published (Approved)
Published: December 2016

Abstract: This work presents facile synthesis of gold nanoparticle (Au NP)-ionic liquid hybrid film of < 10 nm by a simple two-step process at room temperature by deposition of Au NPs suspended in 1-hexyl-1methyl-pyrolidinium bromide, on Si (111) substrates. FTIR results demonstrated that ionic liquid properties remain unaltered during and after Au NP synthesis, and even coating on Si (111) substrate. XRD, XPS, and XAS spectral data confirm the presence of Au(0) while EXAFS data indicated the presence of small particles or incomplete surface species. Cross-sectional analysis using FE-SEM and edge length measurement using AFM showed that the film thickness is ca 10 nm.

Journal Keywords: Ionic-liquid; Gold; Nanoparticle; Room-temperature; Thin-film

Subject Areas: Materials, Chemistry

Instruments: B18-Core EXAFS