等离子体子
材料科学
时域有限差分法
基质(水族馆)
拉曼光谱
纳米技术
吸附
表面增强拉曼光谱
纳米颗粒
银纳米粒子
光子学
拉曼散射
光电子学
光学
化学
有机化学
海洋学
物理
地质学
作者
Xin Zhang,Xin Xie,Lingjun Zhang,Kaibin Yao,Yingzhou Huang
标识
DOI:10.1016/j.saa.2022.121362
摘要
Optoplasmonic hybrid structures composed of photonic and plasmonic elements with excellent optical properties are of great significance for the development of surface-enhanced Raman spectroscopy (SERS) substrates. In this work, the optoplasmonic hybrid structure is composed of SiO2 microsphere and two-dimensional (2D) plasmonic- metal organic frameworks (MOF) film. Among them, the 2D plasmonic-MOF film is prepared from silver nanoparticles encapsulated by zeolitic imidazole acid framework (AgNP@ZIF-8) by self-assembly method. This optoplasmonic hybrid structure with gas adsorption properties could be used as a SERS substrate for 4-Mercaptophenol (4-MP) gas detection. Experimental data show that this substrate is dependent on the thickness of the ZIF shell and the size of the SiO2 microspheres. In addition, it is confirmed by the electromagnetic field simulation of finite-difference time-domain method (FDTD). The optoplasmonic hybrid microstructures exhibit good uniformity for detection of 4-MP gas molecules. This work not only broadens the understanding of our optoplasmonic hybrid structure, but also has broad application prospects in SERS and gas sensing related fields.
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