【摘要】 以CuCl2.2H2O和NaOH为原料,离子液体-水混合溶剂为介质,采用溶剂热反应法制备了二维CuO纳米片。在反应过程中,离子液体发挥模板剂的作用,实现了CuO纳米片自组装合成;并且通过反应温度、表面活性剂及1,3-咪唑基离子液体阴离子的改变,实现了CuO纳米晶体形貌的可控合成,讨论了CuO纳米片的形成机理。用XRD、FESEM和TEM/SAED对CuO纳米晶体进行了结构和形貌表征;用FTIR和TG/DSC证实了离子液体修饰在CuO纳米片的表面,从而有效地阻止了CuO纳米片的团聚。离子液体在反应中发挥了助溶剂、模板剂和修饰剂的三重作用。更多还原

【Abstract】 The 2-D CuO nanoplatelets were synthesized by solvothermal reaction using CuCl2·2H2O and NaOH as raw materials in the mixed solvents of ionic liquids and water.CuO nanoplatelets were prepared based on self-assembly by ionic liquids working as structure-directing agent.Morphology control of CuO could be achieved by varying reaction temperature,surfactant and the anion type of 1,3-dialkylimidazolium based ionic liquids.The formation mechanism of CuO nanoplatelets was discussed.XRD,FESEM,and TEM/SAED were used to characterize the structure and morphology of products.FTIR spectra and TG/DSC curves indicated that the surface of the CuO nanoplatelets was modified with the ionic liquid to prevent them from possible crystallite aggregation.It was demonstrated that the ionic liquid acted as cosolvent,structure-directing agent and modifiers.更多还原