Hydrothermal Syntheses of CuO, CuO/Cu2O, Cu2O, Cu2O/Cu and Cu Microcrystals Using Ionic Liquids  

作　　者：ZHANG Meng TU Xianneng WANG Jingyang FANG Tuo WANG Yanli XU Xiaodong ZHANG Milin CHEN Yitung 

机构地区：[1]Fundamental Science on Nuclear Safety and Simulation Technology Laboratory [2]Key Laboratory of Superlight Materials and Surface Technology, Ministry of Education, Harbin Engineering University, Harbin 150001, P. R. China [3]Department of Mechanical Engineering, University of Nevada Las Vegas, 4505 Maryland Parkway, Box 454027, Las Vegas, NV89154-4027, USA

出　　处：《Chemical Research in Chinese Universities》2016年第4期530-533,共4页高等学校化学研究（英文版）

基　　金：Supported by the National Natural Science Foundation of China（Nos.51104050, 51301050, 51202047）, the Natural Science Foundation of Heilongjiang Province, China（Nos.E201413, E201419）, the Technology Foundation for Selected Overseas Chinese Scholar of Heilongjiang Province, China（No. 159150130002） and the Fundamental Research Funds for the Central Universities of China（No.HEUCF161501）.

摘　　要：In this paper, CuO, CuO/Cu2O, Cu2O, Cu2O/Cu and Cu microcrystals were synthesized via a hydrothermal method by mixing Cu（NO3）2·3H2O and NaOH together in the presence of an ionic liquid l-butyl-3-methylimidazolium tetrafluoroborate（[BMIM]BF4） or 1-butyl-3-methylimidazolium chloride（[BMIM]Cl）. The structures and the morphologies of the obtained products were characterized by means of X-ray diffractometer（XRD）, field-emission scanning electron microscopy/energy-dispersive spectroscopy（FESEM/EDS）, transmission electron microscopy/selected area electron diffraction（TEM/SAED） and Raman spectroscopy. The result of XRD indicates that Cu2O and Cu microcrystals are cubic phase and the Raman spectra confirm the presence of carbon. The results of FESEM and TEM images show Cu2O microcrystals as rule cubes of 2μm in length and Cu particles of 5 μm in diameter. According to the difference between crystal structures, bi-eomponent and single component products were synthesized by adjusting the reaction conditions. A possible formation mechanism of Cu2O and Cu was proposed in [BMIM]BF4.In this paper, CuO, CuO/Cu2O, Cu2O, Cu2O/Cu and Cu microcrystals were synthesized via a hydrothermal method by mixing Cu（NO3）2·3H2O and NaOH together in the presence of an ionic liquid l-butyl-3-methylimidazolium tetrafluoroborate（[BMIM]BF4） or 1-butyl-3-methylimidazolium chloride（[BMIM]Cl）. The structures and the morphologies of the obtained products were characterized by means of X-ray diffractometer（XRD）, field-emission scanning electron microscopy/energy-dispersive spectroscopy（FESEM/EDS）, transmission electron microscopy/selected area electron diffraction（TEM/SAED） and Raman spectroscopy. The result of XRD indicates that Cu2O and Cu microcrystals are cubic phase and the Raman spectra confirm the presence of carbon. The results of FESEM and TEM images show Cu2O microcrystals as rule cubes of 2μm in length and Cu particles of 5 μm in diameter. According to the difference between crystal structures, bi-eomponent and single component products were synthesized by adjusting the reaction conditions. A possible formation mechanism of Cu2O and Cu was proposed in [BMIM]BF4.

关 键 词：Ionic liquid Hydrothermal method Reducing agent Microstructure Crystal structure 

分 类 号：TQ424.25[化学工程] O614.121[理学—无机化学]