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Question

本实验采用共沉淀法制备Fe3O4纳米颗粒，以硅烷偶联剂巯基丙基三甲氧基硅烷作为添加剂，硼酸化钾作为还原剂，在银氨溶液中制备出具有核壳结构的Fe3O4/Ag 纳米复合粒子。以碱性品红为探针分子，测量制备出的Fe3O4/Ag纳米复合粒子的表面增强拉曼光谱。
表面增强拉曼光谱是一种非常有效的探测界面特性和分子间相互作用、表征表面分子吸附行为和分子结构的工具,而活性基底的制备是获得SERS信号的前提。
实验结果表明：Fe3O4@Ag纳米复合粒子是很好的活性基底，这对核壳结构的纳米复合粒子在生物医学方面的应用有了进一步的认识。

Answer 1

This experiment uses Fe3O4 nanoparticles prepared by coprecipitation, to Mercapto propyl silane coupling agent three dimethoxy silane as additive, potassium Borate as a reducing agent, in the preparation of silver in the ammonia solution of Fe3O4/Ag Nano-composite particles with core-shell structure. With rosaniline as the probe molecule, preparation of measurement of the surface-enhanced Raman spectrum of Fe3O4/Ag Nano-composite particles.
Detection of surface-enhanced Raman spectroscopy is a very efficient interface features and interactions between molecules, and molecular structure characterization of surface molecular adsorption behavior of tools, and preparation of active substrate is a prerequisite for access to SERS signals.
Experimental results indicate that the active substrate of Fe3O4@Ag nanocomposite particles is very good, the core-shell structure composite nano-particles in bio-medical applications has been further understanding.

参考资料：必应