Controlled stepwise-synthesis of core–shell Au@MIL-100 (Fe) nanoparticles for sensitive surface-enhanced Raman scattering detection

• DOI: 10.1039/c5an01657f
• Publication Date: 2015-11-03T11:00:56Z
• Authors: Jia Liao; Dongmei Wang; Anqi Liu; Yuling Hu; Gongke Li
• Keywords: Malachite green; Malachite

A novel porous Au@MIL-100 (Fe) core-shell structure in which a Au nanoparticle (AuNP) core is coated with controllable uniform metal-organic framework shell has been fabricated by using facile step-by-step procedure. The as-synthesized takes advantage of the high adsorption capability MIL-100 and localized surface plasmon resonance properties AuNP core, was used as hybrid enhanced Raman scattering (SERS) substrate. We discussed fabrication, physical characterization, SERS activity our substrate, found that this new substrate had thickness, stability good activity. potential practical application firstly evaluated quantitative analysis malachite green aquaculture water. method showed linearity between 3.0 × 10(-8)-1.0 10(-6) mol L(-1) for correlation coefficient 0.9945. limit detection (LOD) 8.0 10(-9) L(-1). Then applicability situ on fish body indicated its great rapid on-site analytical strategy. In addition, preliminary investigation also shows toward carbon disulfide would be strategy SERS-based gas sensors.