线性聚胺介导的SiO_2杂化纳米粒子的仿生合成

Biomimetic Synthesis of Hybrid Silica Nanoparticles Mediated by Linear Polyamines

在环境条件下采用简单的线性聚胺作为仿生结构导向剂,快速可控合成了聚合物杂化的SiO2纳米粒子。采用TEM、EDX、FT-IR、TGA等测试技术对所合成的纳米粒子的形态、结构和组成进行了表征。TEM研究结果表明,所合成的杂化纳米粒子为球形形态,粒径约为15 nm,并具有较好的单分散性。EDX、FT-IR和TGA测试结果均证实,在杂化粒子中聚合物组分和无机SiO2同时存在。结果表明,纳米粒子的形成强烈依赖于体系中SiO2的矿化反应时间。

We reported the biomimetic synthesis of hybrid silica nanoparticles mediated with linear cationic poly （ acrylamide-co-dimethylaminoethylacrylate-methyl chloride ） [ poly （ AM-co-DMC ） ]. The hybrid silica nanoparticles were simply synthesized by stirring a mixture of the aqueous solution of poly（AM-co-DMC） with tetramethoxysilane（TMOS） at ambient temperature for typically 30 min. The hybrid nanoparticles were well characterized with FT-IR, TEM, TEM-EDX and TGA. The representative hybrid nanoparticles were roughly spherical, with an average diameter of around 15 nm and a good monodispersity. EDX analysis, FT-IR and TGA analyses have confirmed that the hybrid particle is composed of polyamines and inorganic silica. In addition, we also found that the formation of hybrid nanoparitlces depended on the mineralization reaction time for silica deposition.