静电纺丝技术制备热耐受性SERS基底  

Preparation of Thermotolerant SERS Substrate by Electrospinning

作　　者：李朵朵 邵菲 胡森 郭小玉[1] 文颖[1] 杨海峰[1] LI Duoduo;SHAO Fei;HU Sen;GUO Xiaoyu;WEN Ying;YANG Haifeng(The Education Ministry Key Lab of Resource Chemistry,College of Chemistry and Materials Science,Shanghai Normal University,Shanghai 200234,China)

机构地区：[1]上海师范大学资源化学教育部重点实验室,化学与材料科学学院,上海200234

出　　处：《光散射学报》2023年第3期238-244,共7页The Journal of Light Scattering

基　　金：国家自然科学基金项目(No.21475088);上海市绿色能源化学工程工程研究中心(18DZ2254200)。

摘　　要：本文以纳米金为模板,通过替代化学反应,合成Au@AgNPs核壳纳米粒子,将其负载在聚(苯乙烯-丁二烯)(SB)电纺纤维膜上,制得表面增强拉曼散射(SERS)柔性基底Au@AgNPs/SB。利用紫外-可见光谱(UV-vis)、透射电子显微镜(TEM)、扫描电子显微镜(SEM)和拉曼光谱表征了基底的形貌结构和光谱性能。以罗丹明6G为拉曼分子探针,将Au@AgNPs/SB基底经常温-升温过程处理后进行光谱实验,结果表明该基底热耐受性好,能用于较高温度下前处理样品,有利于提高检测的灵敏度。以农药福美双作为研究对象,通过对其进行加热实验,SERS检测限可低至3.65×10^(-8)mol/L。In this paper,Au@AgNPs core-shell nanoparticles are synthesized by using nano-Au seeds template method and then loaded on the poly(styrene butadiene)(SB)fiber membrane made-by electrospinning to prepare Au@AgNPs/SB as the surface enhanced Raman scattering(SERS)flexible substrate.Ultraviolet-visible spectroscopy(UV-vis),transmission electron microscopy(TEM),scanning electron microscopy(SEM)and Raman spectroscopy are used to characterize the morphology and spectral properties of such substrate.Using Rhodamine 6G as a Raman molecular probe,on Au@AgNPs,SERS spectra are recorded after temperature-rise process,showing good thermal tolerance of Au@AgNPs/SB substrate.Therefore,Au@AgNPs/SB substrate could be utilized to detect the target samples pretreated samples at relatively high temperatures,and is conducive to improving the detection sensitivity.Taking the SERS detection of thiram as proof of concept,the limit of detection can be as low as 3.65×10^(-9)mol/L by using Au@AgNPs/SB extraction of thiram in a hot solution.

关 键 词：SERS 静电纺丝 SB纤维 热耐受性 农药残留分析 

分 类 号：O657[理学—分析化学]