A Comparative Study on the Selected Area Electron Diffraction Pattern of Fe Oxide/Au Core-shell Structured Nanoparticles

The selected area electron diffraction （SAED） pattern of magnetic iron oxide core/gold shell nanoparticles has been studied. For the composite particles with mean size less than 10 nm, their SAED pattern is found to be different from either the pattern of pure Fe oxide nanoparticles or that of pure Au particles. Based on the fact that the ring diameters of these composite particles fit the characteristic relation for the fcc structure, the Au atoms on surfaces of the concerned particles are supposed to pack in a way more tightly than they usually do in pure Au nanoparticles. The driving force for this is the coherency strain which enables the shell material at the heterostructured interface to adapt the lattice parameters of the core.

Dispersion behavior of core-shell silica-polymer nanoparticles

Core-shell silica nanoparticles are superior in modifying surface wetting behavior, enhancing nucleation and growth in crystallization, improving dispersion of naked nanoparticles, and thus upgrading the overall properties of organic polymers. The dispersion behavior and morphology of monodisperse core-shell silica particles in several polymers including polyesters are reviewed and their potential applications are discussed.

纳米粒子的包覆技术

介绍了纳米粒子的聚合物、有机、无机、元素单质、生物大分子包覆技术及其包覆纳米粒子在催化、磁性材料、半导体材料、生物技术方面的应用。

中空纳米碳颗粒的制备方法及应用前景

综述了中空结构纳米碳颗粒的几种制备新方法、优缺点和在电催化剂中的应用现状,展望了这种新型碳结构在催化领域的应用前景。

高分子纳米粒

纳米粒作为一种新材料,已在许多领域呈现出了其特有的应用价值。高分子纳米粒是纳米粒的一个分支,本文结合对纳米粒的一般介绍,着重说明了高分子纳米粒在制备方法、本体和表面性能的改进,以及形貌结构可调控等方面的特点;最后,通过近年来高分子纳米粒在生物医学领域的应用研究实例,对高分子纳米粒在生物医学领域的重要意义和应用前景进行了探讨。

木质素基金属纳米粒子复合材料的制备及其应用研究进展

木质素是一种最丰富的芳香族天然高分子生物质资源,木质素纳米粒子既具有木质素原本特点,还具有纳米材料的纳米效应等特性,在众多功能材料领域具有很大的潜在应用价值,特别是作为绿色还原剂直接还原金属离子生成木质素基金属纳米粒子复合材料,被广泛应用于催化领域等。本文综述了木质素纳米粒子的制备及其在金属离子还原和金属纳米粒子负载的研究进展,重点综述了木质素基金属纳米粒子复合材料在不同应用领域的研究进展,最后总结并展望了木质素在金属纳米粒子复合材料制备和应用中面临的机遇和挑战。