聚多巴胺改性中空玻璃微珠表面化学镀铜的研究

摘要

通过多巴胺在水溶液中的自身氧化聚合,在中空玻璃微珠表面形成聚多巴胺层,聚多巴胺层吸附化学镀铜液中的铜离子,在外加还原剂二甲基胺硼烷(DMAB)的作用下将铜离子还原成单质铜,从而在微珠表面沉积一层金属铜,成功制备镀铜中空玻璃微珠.采用SEM,EDS,FTIR和XRD对复合粉体的形貌、化学组成和结晶形态进行研究和表征.结果表明:中空玻璃微珠表面所镀金属铜完整致密.相对于传统化学镀,这种方法操作简单、成本低、对环境污染小.%Polydopamine-coated hollow glass microspheres were first prepared via the oxidative selfpolymerization of dopamine in an aqueous solution.Then copper ions in electroless copper plating bath were adsorbed by polydopamine and reduced into the copper nanoparticles using dimethylamine broane (DMAB) as an exogenous reducing agent.Thus a copper layer was deposited on the surface of hollow glass microsphere.Copper-plated hollow glass microspheres were successfully fabricated.The surface morphology,chemical composition and crystalline structure of the composite microspheres were investigated by field-emission scanning electron microscopy (FESEM),energy dispersive X-ray spectroscopy (EDS),Fourier transform infrared spectra (FTIR),and X-ray diffraction (XRD).The results show that copper layers which successfully deposited on the polydopamine-coated hollow glass microspheres are continuous and compact.Compared with the traditional electroless plating,this approach is facile,low-cost and environment-friendly.