Abstraction of Nano Copper in a Room Temperature Ionic Liquid

Journal Article · Fri Feb 02 04:00:00 EST 2007 · AIP Conference Proceedings

DOI:https://doi.org/10.1063/1.2644665· OSTI ID:21054745

Peng, C Y; Huang, C H ^[1]; Wang, H Paul ^[1]; Yuling, Wei ^[2]

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1. Department of Environmental Engineering, National Cheng Kung University, Tainan City, Taiwan (China)
2. Department of Environmental Science and Engineering, TungHai University, Taichung City, Taiwan (China)

Speciation of copper in the abstraction of nano copper with a room temperature ionic liquid (RTIL) (1-butyl-3-methylimidazolium hexafluorophosphate [C4mim][PF6]) has been studied by X-ray absorption near edge structural (XANES) and extended X-ray absorption fine structural (EXAFS) spectroscopies in the present work. The least-square fits of the XANES spectra suggest that nano CuO (79%) and Cu(II) complex (Cu(II)-IL) (21%) are the main copper species in the RTIL. The fitted EXAFS spectra show that the Cu-O (1st shell) bond distance is 2.08 A with a coordination number (CN) of 2.6. In the second shells of copper, the average bond distance of Cu-Cu is 2.99 A with a CN of 5.1.

• OSTI ID: 21054745
• Journal Information: AIP Conference Proceedings, Journal Name: AIP Conference Proceedings Journal Issue: 1 Vol. 882; ISSN APCPCS; ISSN 0094-243X
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
ABSORPTION SPECTRA
ABSORPTION SPECTROSCOPY
BOND LENGTHS
CHEMICAL BONDS
CHEMICAL STATE
COORDINATION NUMBER
COPPER
COPPER OXIDES
FINE STRUCTURE
LEAST SQUARE FIT
NANOSTRUCTURES
ORGANIC COMPOUNDS
X-RAY SPECTRA
X-RAY SPECTROSCOPY