title: Porosity-controlled eggshell membrane as 3D SERS-active substrate.
abstract: We report on the fabrication of a surface-enhanced Raman scattering (SERS) platform, comprised of a three-dimensional (3D) porous eggshell membrane (ESM) scaffold decorated with Ag nanoparticles (NPs). Both native and treated ESM were used, where the treated ESM pore size and fiber crossing density was controlled by timed exposure to hydrogen peroxide (H2O2). Ag NPs were synthesized in situ by reduction of silver nitrate with ascorbic acid. Our results demonstrate that H2O2-treated Ag-ESM provides a more densely packed 3D network of active material, which leads to consistently higher SERS enhancement than untreated Ag-ESM substrates.
authors.affiliation: Department of Chemistry and Center for Nanoscience and Nanotechnology, National Sun Yat-sen University, Kaohsiung 80424 (Taiwan), Tel: (+886) 75252000 ext. 3931, Fax: (+886) 75253908.
authors.forename: Pei-Ying
authors.initials: PY
authors.lastname: Lin
authors.forename: Chiung-Wen
authors.initials: CW
authors.lastname: Hsieh
authors.forename: Pei-Chuan
authors.initials: PC
authors.lastname: Tsai
authors.forename: Shuchen
authors.initials: S
authors.lastname: Hsieh
mesh_terms: D000814:Aniline Compounds / Q000737:chemistry; D000818:Animals; D001565:Benzoates / Q000737:chemistry; D004528:Egg Shell / Q000502:physiology*; D008566:Membranes / Q000737:chemistry* / Q000502:physiology; D053768:Metal Nanoparticles / Q000737:chemistry; D015394:Molecular Structure; D016062:Porosity; D012834:Silver / Q000737:chemistry; D013059:Spectrum Analysis, Raman; D013438:Sulfhydryl Compounds / Q000737:chemistry
chemical_list: D000814:Aniline Compounds; D001565:Benzoates; D013438:Sulfhydryl Compounds; C013594:4-mercaptobenzoate; D012834:Silver; C064316:4-aminothiophenol
keywords: Raman spectroscopy; SERS; atomic force microscopy; membranes; nanoparticles