微波热解法制备Cu/Cu2O纳米材料

在二乙二醇溶剂体系中利用微波介电加热分解醋酸铜前体，进一步还原得到Cu2O和Cu纳米粒子以及Cu/Cu2O核壳结构。 采用X射线衍射、透射电子显微镜、扫描电子显微镜和紫外吸收光谱测试技术对产物的形貌、结构和组成进行了研究，结果表明，得到的Cu/Cu2O核壳结构直径为500 nm左右。 对比实验研究了不同聚合度乙二醇系列溶剂、反应时间以及表面活性剂或配位剂对产物形貌、组成的影响，表明低聚合度乙二醇和长的反应时间有利于醋酸铜还原形成铜。

Synthesis of Cu/Cu2 O Nanomaterials by Microwave Thermo-decomposition Method

Copper acetate was decomposed by microwave heating to form Cu2O and Cu nanoparticles and Cu/Cu2O core/shell nanostructures. The crystal structures, compositions and morphologies of the products were characterized by powder X-ray diffraction(XRD), transmission electron microscopy(TEM) and scanning electron microscopy(SEM). The diameter of the as-prepared Cu/Cu2O core/shell nanostructures is about 500 nm. Controlled experiments found that polymerization degree of ethylene glycol, reaction time, surfactant or ligand have great effects on the morphology and composition of the products. Lower polymerization degree and longer reaction time facilitate the reduction of copper acetate to form Cu nanoparticles.