Silver Nanoparticle-Decorated Chitosan Aerogels as Three-Dimensional Porous Surface-Enhanced Raman Scattering Substrates for Ultrasensitive Detection
Silver Nanoparticle-Decorated Chitosan Aerogels as Three-Dimensional Porous Surface-Enhanced Raman Scattering Substrates for Ultrasensitive Detection
复制标题
银纳米颗粒装饰的壳聚糖气凝胶作为三维多孔表面增强拉曼散射基底用于超灵敏检测
DOI：
10.1021/acsanm.2c00375
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发表时间：
2022-04-22
影响因子：
5.9
通讯作者：
Shen, Jun
中科院分区：
文献类型：
--
作者：
Feng, Chen;Wang, Xiaodong;Shen, Jun
Surface-enhanced Raman scattering (SERS) has attracted widespread attention because of its high sensitivity and label-free detection capabilities. Here, chitosan aerogels decorated with Ag nanoparticles (CAA) are used as a three-dimensional (3D) SERS substrate to achieve ultrasensitive detection. The CAA produces a high specific surface area and high porosity, which generates numerous hot spots and adsorption sites for SERS. With crystal violet as a probe molecule, a SERS enhancement factor of 1.4 x 109 was realized, with a detection limit of 10-13 M. Furthermore, quantitative detection in the 10-5-10-10 M range and good reproducibility were achieved. This work proposes a cost-effective aerogel-based SERS substrate with high sensitivity and reproducibility.
