Strong Interaction Between Thiol and Silver Modified Silica Nanoparticles in the SERS Sensing of Municipal Solid Waste and Tannery Waste Leachate From Groundwater
Abstract A novel surface enhanced Raman spectroscopy (SERS) based polyvinylthiol (PVASH) and silver modified silica nanoparticles (PSA NPs) was prepared to actively concentrate different types of landfill leachate in water. PSA NPs were characterized with UV-visible spectroscopy, XRD, TEM and EDX. SERS sensitivity of the PSA NPs was proved with environmentally ignored leachate from municipal solid waste (MSW) landfill. The result shows that, SERS sensing of PSA NPs were improved with the presence of thiol group. Further, PSA NPs exhibited similar vibrational bands of MSW and tannery waste (TW) landfill leachate in their nearest homeland aquifers. Hence, this study provides a novel SERS sensor of PSA NPs in the tile to detect and analyze the environmentally ignored organic and inorganic compounds.
