Abstract：In this paper, we have prepared polyacrylonitrile (PAN)/Ag nanoparticle composite nanofibers as a surface enhanced Raman scattering (SERS) substrate via an elelctrospinning technique. First, the PAN and AgNO3 were dissolved in N, N’-dimethylformamide solvent to get PAN/Ag seed solution; then the PAN/Ag seed solution was electrospun for the preparation of PAN/Ag seed composite nanofibers; Finally, the PAN/Ag seed composite nanofibers were treated by hydrazine hydrate to synthesize PAN/Ag nanoparticle composite nanofibers. The as-prepared PAN/Ag nanoparticle composite nanofibers were mixed with the probes for the SERS detection to get the SERS spectrum of the probes. The PAN/Ag nanoparticle composite nanofibers substate showed a good SERS signal when the concentration of PATP is as low as 10-6 mol·L-1. Furthermore, this kind of SERS substrate could be large-scale prepared, which showed a high commercial value.
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