Design and synthesis of Fe₃O₄@SiO₂ core-shell nanomaterials

ABSTRACT

Core-shell nanoparticles (NPs) became the focus of scientific research in recent years. The design and controllable structures of nanocomposites with core-shell structure become increasingly important research fields at the forefront of materials science recently. In this paper, a series of templates for preparation of core-shell structure such as monodisperse silica (SiO₂) NPs and PVP-coated low-cross linked polystyrene (PS) NPs were successful synthesized. In order to further study the key conditions for the formation of core-shell structure, we further prepared Fe₃O₄@SiO₂ nanoparticles. The good properties of the core-shell structure in the field of catalysis, gas separation and biomedicine have a good prospect.

KEYWORDS:

• Core-shell
• nanoparticle
• silica

Funding

This work is financially supported by the National Natural Science Foundation of China (21375069, 21574072, 21675091, 21404065), the Natural Science Foundation for Distinguished Young Scientists of Shandong Province (JQ201403), the Taishan Young Scholar Program of Shandong Province (tsqn20161027), the Key Research and Development Project of Shandong Province (2016GGX102028, 2016GGX102039), the Project of Shandong Province Higher Educational Science and Technology Program (J15LC20), the Scientific Research Foundation for the Returned Overseas Chinese Scholars of State Education Ministry (20111568), the People's Livelihood Science and Technology Project of Qingdao (166257nsh), and the Postdoctoral Scientific Research Foundation of Qingdao.