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Hydrothermal syntheses of CuO, CuO/Cu2O, Cu2O, Cu2O/Cu and Cu microcrystals using ionic liquids

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Abstract

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 1-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 2 μm in length and Cu particles of 5 μm in diameter. According to the difference between crystal structures, bi-component and single component products were synthesized by adjusting the reaction conditions. A possible formation mechanism of Cu2O and Cu was proposed in [BMIM]BF4.

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Authors and Affiliations

  1. Fundamental Science on Nuclear Safety and Simulation Technology Laboratory, Harbin Engineering University, Harbin, 150001, P. R. China

    Meng Zhang, Jingyang Wang & Tuo Fang

  2. Key Laboratory of Superlight Materials and Surface Technology, Ministry of Education, Harbin Engineering University, Harbin, 150001, P. R. China

    Meng Zhang, Xianneng Tu, Yanli Wang, Xiaodong Xu & Milin Zhang

  3. Department of Mechanical Engineering, University of Nevada Las Vegas, 4505 Maryland Parkway, Box 454027, Las Vegas, NV, 89154-4027, USA

    Yitung Chen

Authors
  1. Meng Zhang
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  2. Xianneng Tu
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  3. Jingyang Wang
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  4. Tuo Fang
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  5. Yanli Wang
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  6. Xiaodong Xu
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  7. Milin Zhang
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  8. Yitung Chen
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Corresponding author

Correspondence to Xiaodong Xu.

Additional information

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).

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Zhang, M., Tu, X., Wang, J. et al. Hydrothermal syntheses of CuO, CuO/Cu2O, Cu2O, Cu2O/Cu and Cu microcrystals using ionic liquids. Chem. Res. Chin. Univ. 32, 530–533 (2016). https://doi.org/10.1007/s40242-016-6037-2

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  • DOI: https://doi.org/10.1007/s40242-016-6037-2

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