AgNPs@PDMS纳米碗阵列SERS基底的制备及其性能研究
Preparation and performance study of AgNPs@PDMS nanobowl array SERS substrate
夏津 1王金阳 1韩龙浩 1黄艳宾 1冯越 1张慧亮2
作者信息
- 1. 河北工程大学数理科学与工程学院,河北邯郸 056038
- 2. 河北工程大学数理科学与工程学院,河北邯郸 056038;河北省计算光学成像与光电检测技术创新中心,河北邯郸 056038;河北省计算光学成像与智能感测国际联合研究中心,河北邯郸 056038
- 折叠
摘要
构建了一种具有纳米碗阵列结构的柔性表面增强拉曼散射(SERS)基底,并对罗丹明6G和福美双进行了检测分析.首先利用气-液自组装法在玻璃片上制备单层聚苯乙烯(PS)微球薄膜,然后将液-液界面自组装法得到的单层银纳米颗粒转移至PS微球薄膜上,再把聚二甲基硅氧烷(PDMS)涂敷于银纳米颗粒上,经烘干和剥离得到AgNPs@PDMS纳米碗阵列基底.使用便携式拉曼光谱仪对该基底进行测试,以罗丹明6G作为探针分子,测试得到的检测限为1×10-8mol/L,增强因子为4.32×105,测试结果也显示该基底具有较高的均匀性和可重复使用性.以福美双为探针分子,测试得到的检测限为1×10-6mol/L,并对福美双的拉曼峰强与其浓度关系进行了研究,结果显示该基底能够实现对福美双的定量检测.
Abstract
A flexible surface-enhanced Raman scattering(SERS)substrate with a nano-bowl array structure was constructed and used for the analysis and detection of Rhodamine 6G and thiram.First,a single-layer polystyrene(PS)microsphere film was prepared on a glass slide using the gas-liquid self-assembly method.Then,the single-layer silver nanoparticles obtained by the liquid-liquid interface self-assembly method were transferred to the PS mi-crosphere film.Subsequently,polydimethylsiloxane(PDMS)was coated on the silver nanoparticles.After drying and peeling,an AgNPs@PDMS nanobowl array substrate was obtained.Using a portable Raman spectrometer to test this substrate with Rhodamine 6G as the probe molecule,the detection limit was found to be 1×10-8 mol/L,with an en-hancement factor of 4.32×105.The test results also showed that the substrate has high uniformity and reusability.U-sing thiram as the probe molecule,the detection limit was as low as 1×10-6 mol/L.The relationship between the Ra-man peak intensity of thiram and its concentration was studied,and the results showed that the substrate can achieve quantitative detection of thiram.
关键词
光谱学/表面增强拉曼散射/柔性基底/有序阵列Key words
spectroscopy/surface enhanced raman scattering(SERS)/flexible substrate/ordered array引用本文复制引用
基金项目
河北省自然科学基金(E2021402097)
出版年
2024
NETL
NSTL
万方数据