Silver nanoplates were for the first time synthesized on electrospun chitosan/polyethylene oxide (CS/PEO) fibers via tollens reaction. Ag nanoplates/CS/PEO fibers were used as the SERS-active substrates for quantitative evaluation of 2-naphthylthiol, with an enhancement factor (1.41 ± 0.07) × 106. The SERS-active substrates are flexible, stable, and easy for transportion and preservation, and act as the SERS platform for sensitive detection of the target. Thiram and thiabendazole as the representatives of pesticide residues were identified and detected by the Ag nanoplates/CS/PEO fibers, exhibiting linear response ranges from 10−11 to 10−7 M with a detection limit of 10−11 M. The Ag nanoplates/CS/PEO fibers meet the requirement of thiram detection in practical samples, such as apple, pear, tomato, and cucumber juices. The strategy revealed the feasibility of fabrication of Ag nanoplates on electrospun fibers via tollens reaction and SERS sensing of pesticides in real samples. Ag nanoplates/CS/PEO fibers were fabricated by tollens reaction and electrospinning for SERS sensing of pesticide residues with high sensitivity. Ag nanoplates/CS/PEO fibers were fabricated by tollens reaction and electrospinning for SERS sensing of pesticide residues with high sensitivity.

中文翻译：

---

通过托伦反应在电纺纤维上合成银纳米片用于农药残留的 SERS 传感

银纳米片首次在电纺壳聚糖/聚环氧乙烷 (CS/PEO) 纤维上通过 tollens 反应合成。Ag nanoplates/CS/PEO 纤维作为 SERS 活性底物用于定量评估 2-萘硫醇，增强因子为 (1.41 ± 0.07) × 106。SERS 活性底物柔韧、稳定、易于运输和保存，并作为 SERS 平台对目标进行灵敏检测。Ag nanoplates/CS/PEO 纤维鉴定和检测作为农药残留代表的福美双和噻菌灵，线性响应范围为 10-11 到 10-7 M，检测限为 10-11 M。 Ag nanoplates/ CS/PEO 纤维满​​足实际样品中福美双检测的要求，如苹果、梨、番茄和黄瓜汁。该策略揭示了通过 tollens 反应和 SERS 感测实际样品中的农药在电纺纤维上制造银纳米片的可行性。通过托伦斯反应和静电纺丝制备银纳米片/CS/PEO 纤维，用于高灵敏度农药残留的 SERS 传感。通过托伦斯反应和静电纺丝制备银纳米片/CS/PEO 纤维，用于高灵敏度农药残留的 SERS 传感。