Electrospun Ag-incorporated WO₃ nanofibers were prepared as recyclable surface-enhanced Raman scattering (SERS) substrates. The entangled mats of the nanofibers offered large specific surface areas with the Raman hotspots expanded in the third dimension. Their SERS activities were measured using methylene blue (MB) as a test substance. The substrates yielded an enhancement factor of 6.2 × 10⁵ and exhibited good reproducibility (RSD of 10.35 %). The limit of detection (LOD) was found to be 10⁻⁵ M. The resulting nanofibers showed recyclability induced by photocatalytic degradation of adsorbed MB molecules under visible light. The Ag-incorporated WO₃ nanofibers demonstrate themselves as promising platforms for the development of large-scale SERS substrates with recyclability and high-density hotspots.

电纺掺银 WO ₃纳米纤维被制备为可回收的表面增强拉曼散射 (SERS) 基材。纳米纤维的缠结垫提供了大的比表面积，拉曼热点在三维空间中扩展。使用亚甲蓝 (MB) 作为测试物质测量它们的 SERS 活性。底物产生了 6.2 × 10 ⁵的增强因子，并表现出良好的重现性（RSD 为 10.35%）。发现检测限(LOD)为10 ^-5 M。所得纳米纤维显示出由吸附的MB分子在可见光下的光催化降解诱导的可回收性。掺银WO ₃ 纳米纤维证明自己是开发具有可回收性和高密度热点的大规模 SERS 基材的有前途的平台。