摘要
表面增强拉曼散射作为一种高灵敏、无损伤的分析技术,被广泛应用于物质的鉴定以及定量分析。提出一种低成本制备SERS衬底的方法,即利用浸渍-提拉法在滤纸上吸附一层均匀的氧化石墨烯(GO),并结合等离子体溅射技术在纸基GO上沉积贵金属纳米颗粒,以浓度为10-5 mol/L的罗丹明6G(R6G)为探针分子,分析基底的表面增强拉曼散射特性。结果表明,当Au和Ag纳米颗粒溅射时间分别为20与90 s时,吸收波长与拉曼激光波长一致,其局域表面等离子体共振效应(LSPR)达到最佳;此外,利用GO良好的消荧光效果以及滤纸的纤维结构可进一步提高衬底所具的SERS性能。
Surface-enhanced Raman scattering is a highly sensitive and non-invasive analytical technique. This technique can be widely used for the identification and quantitative analysis of materials. In this paper, a simple method for preparing SERS substrates was proposed. First, graphene oxide(GO) was absorbed on the filter paper by leaching-lifting, followed by homogeneous deposition of noble metal nanoparticles by plasma sputtering on the filters. The surface-enhanced Raman scattering properties of the substrate were analyzed with a concentration of 10-5mol/L rhodamine 6 G(R6 G). The results show that GO had a good fluorescence quenching effect in Raman detection. The gold and silver nanoparticleswith an absorption peak of 532 nm greatly enhanced the Raman scattering signal of R6 G via localized surface plasmon resonance(LSPR). In addition, the fiber structure of the filters was able to capture more R6 G molecules. Hence, the substrate exhibited excellent SERS characteristics.
作者
刘蕊华
王哲哲
林林
冯卓宏
李家兵
郑志强
LIU Ruihua;WANG Zhezhe;LIN Lin;FENG Zhuohong;LI Jiabing;ZHENG Zhiqiang(Fujian Provincial Key Laboratory of Quantum Manipulation and New Energy Materials,College of Physics and Energy,Fujian Normal University,Fuzhou 350117,China;Fujian Provincial Engineering Technology Research Center of Solar Energy Conversion and Energy Storage,Fuzhou 350117,China;Fujian Provincial Collaborative Innovation Center for Optoelectronic Semiconductors and Efficient Devices,Xiamen 361005,China;College of Environmental Science and Engineering,Fujian Normal University,Fuzhou 350008,China)
出处
《功能材料》
EI
CAS
CSCD
北大核心
2019年第11期11133-11137,共5页
Journal of Functional Materials
基金
福建省自然科学基金资助项目(2016J01213,2017J01399,2019J01283)
福建省教育厅A类科技资助项目(JA13084)
