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Ultrasound‐Assisted Synthesis of CuO Nanorods in a Neat Room‐Temperature Ionic Liquid
Author(s) -
Alammar Tarek,
Birkner Alexander,
Mudring AnjaVerena
Publication year - 2009
Publication title -
european journal of inorganic chemistry
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.667
H-Index - 136
eISSN - 1099-0682
pISSN - 1434-1948
DOI - 10.1002/ejic.200900093
Subject(s) - nanorod , ionic liquid , x ray photoelectron spectroscopy , chemistry , transmission electron microscopy , absorption spectroscopy , band gap , absorption (acoustics) , scanning electron microscope , spectroscopy , ionic bonding , analytical chemistry (journal) , chemical engineering , nanotechnology , ion , materials science , catalysis , organic chemistry , optics , optoelectronics , physics , quantum mechanics , engineering , composite material
CuO nanorods were prepared via ultrasound‐assisted synthesis in the room temperature ionic liquid (RTIL) 1‐butyl‐3‐methylimidazoliumbis(trifluoromethylsulfonyl)imide [C 4 mim][Tf 2 N] as a reaction medium. The structure and morphology of CuO nanorods were characterized with X‐ray powder diffraction (XRD), transmission electron microscopy (TEM), energy‐dispersive X‐ray analysis (EDX), X‐ray photoelectron spectroscopy (XPS), vibrational and UV/Vis absorption spectroscopy. The synthesized CuO nanocrystals are of rod like shape with lengths from 30 to 100 nm and diameters of about 10 nm. Quantum size effects were observed as the bandgap of the CuO nanorods was determined to 2.41 eV from UV/Vis absorption measurements, which is significantly larger than the bulk value. (© Wiley‐VCH Verlag GmbH & Co. KGaA, 69451 Weinheim, Germany, 2009)