氧化铜纳米片组装的球形花状结构的制备、表征及其形成机制

摘要

在H2 O和乙醇形成的二元体系中，以CuCl2・2H2 O为铜源，无水NaAc为沉淀剂，聚乙二醇（PEG）为形貌控制剂，采用一步水热法制备了氧化铜纳米材料。采用X射线衍射（XRD），扫描电子显微镜（SEM）和透射电子显微镜（TEM）等多种手段对产物进行结构表征。结果表明，所得产物具有单斜结构的氧化铜纳米片构建的球形花结构。研究了其生长过程，提出了相关的化学反应和可能的形成机制。%CuO nanomaterial was synthesized in the CuCl 2・2H2 O-NaAc-PEG-H2 O-ethanol solvothermal system.In this system, NaAc plays a role of precipitation agent and PEG plays a role of morphology control agent .The as-prepared products were character-ized by means of X-ray diffraction(XRD),scanning electron microscopy (SEM)and transmission electron microscopy (TEM).The results show that the as-prepared products are spherical flowerlike CuO constructed from nanoflakes with the monoclinic struc -ture.The growth processes were studied and the related chemical reactions and formation mechanism were presented .