Green synthesis of MIL-101/Au composite particles and their sensitivity to Raman detection of thiram
Metal-organic framework(MOF)MIL-101 and surface plasmon polariton(SPP)supported gold nanoparti-cles(Au NPs)hybrid systems were developed as a highly sensitive and reproducible surface-enhanced Raman scat-tering(SERS)detection platform,in which a green electrostatic self-assembly technology was adopted to construct the substrate.In an aqueous solution,the electronegativity of the particles can be used to prepare the composite sub-strate without any surface modifier.Due to the enrichment capacity of MIL-101 and the electromagnetic enhance-ment from Au NPs,the well-designed MIL-101/Au composites possessed ultrahigh sensitivity with the detection limit of Rhodamine 6G(R6G)as low as 10-10 mol·L-1.Meanwhile,the substrate exhibits high stability,excellent reproduc-ibility,and recyclability.Additionally,the novel substrate can be explored for direct capture,and sensitively detect pesticide residues such as thiram.
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