摘要
以离子液体1-丁基-3-甲基咪唑氯（[bmim]Cl）为介质，以Cu（CH3COO）2·2H2O和NaOH为原料，采用溶剂热反应法，制备了一维CuO纳米棒。用XRD、FESEM和TEM／SAED对产物进行了结构和形貌表征，结果表明：经140℃恒温反应20h，可制备出CuO纳米棒，其长度约为70～100nm，直径约为15～20nm，两端为半球型；离子液体作为软模板剂，引导纳米晶体沿[010]方向生长。FTIR和TG分析表明：离子液体修饰在CuO纳米棒的表面，从而有效地阻止了CuO纳米棒的团聚。应用紫外一可见吸收光谱估测CuO纳米棒的带隙能量为2．64eV。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。
The 1 -D CuO nanorods were prepared by solvothermal reaction using Cu（ CH3COO）2· 2H2O and NaOH as raw materials and the mixture of ionic liquid 1-butyl-3-methylimidazolium chloride （ [ bmim ] CI） and water as solvent. The morphology and structure of CuO nanorods were characterized by XRD, FESEM and TEM/SAED. It is found that the CuO nanorods, prepared at constant temperature of 140 ℃ for 20 h,are 70- 100 nm in length,15 -20 nm in diameters and hemisphere at each end. Ionic liquid plays the role of a soft-template which lead the nanocrystals to grow along [010] direction to form nanorods. The FTIR and TG results indicated that the surface of the CuO nanorods is modified with the ionic liquid to prevent nanorods from possible crystallite aggregation. UV - Vis spectra were employed to estimate the band gap energies of CuO nanorods （ about 2.64 eV）. The ionic liquid acts as cosolvent, template agent and modifier at the same time.
出处
《精细化工》
EI
CAS
CSCD
北大核心
2007年第2期129-132,共4页
Fine Chemicals
基金
教育部博士学科点专项基金(No.20050217019)
哈尔滨工程大学基础研究基金(No.HEUFT05018)
