Microwave-assisted synthesis of flower-like and leaf-like CuO nanostructures via room-temperature ionic liquids

• Published in: The Journal of physics and chemistry of solids Vol. 70; no. 11; pp. 1461 - 1464
• Main Authors: Xia, Jiexiang, Li, Huaming, Luo, Zhijun, Shi, Hua, Wang, Kun, Shu, Huoming, Yan, Yongsheng
• Format: Journal Article
• Language: English
• Published: Kidlington Elsevier Ltd 01.11.2009; Elsevier
• Subjects: A. Nanostructures; A. Semiconductors; B. Crystal growth; Chemical synthesis methods; Condensed matter: structure, mechanical and thermal properties; Cross-disciplinary physics: materials science; rheology; D. Optical properties; Exact sciences and technology; Materials science; Methods of nanofabrication; Nanocrystalline materials; Nanoscale materials and structures: fabrication and characterization; Nanoscale materials: clusters, nanoparticles, nanotubes, and nanocrystals; Physics; Structure of solids and liquids; crystallography; A. Nanostructures; B. Crystal growth; D. Optical properties; A. Semiconductors; Scanning electron microscopy; Microwave radiation; SAED; Nanostructures; Infrared spectra; Energy gap; Transmission electron microscopy; Ultraviolet visible spectrum; Microstructure; Crystal morphology; Copper oxide; Nanocrystal; Crystal structure
• ISSN: 0022-3697; 1879-2553
• DOI: 10.1016/j.jpcs.2009.08.006

Flower-like and leaf-like cupric oxide (CuO) single-crystal nanostructures have been successfully synthesized using ionic liquid 1-octyl-3-methylimidazolium trifluoroacetate ([Omim]TA) under the microwave-assisted approach. By controlling the concentration of [Omim]TA and reaction temperature, shape transformation of CuO nanostructures could be achieved in a short period of time. The results indicate that ionic liquid [Omim]TA plays an important role in the formation of different morphologies of CuO crystals. The crystal structure and morphology of products were characterized by X-ray powder diffraction (XRD), infrared spectrum (IR), scanning electron microscope (SEM), transmission electron microscopy (TEM), and selected-area electron diffraction (SAED). A possible mechanism for CuO nanostructure was proposed. In addition, UV–vis spectroscopy was employed to estimate the band gap energies of CuO crystals.