Preparation and characterization of novel alkylviologens-intercalated vanadyl-vanadate (RV)V{sub 3}O{sub 8}

Journal Article · Thu Sep 15 00:00:00 EDT 2011 · Journal of Solid State Chemistry

OSTI ID:21580240

Keqiang, Lai ^[1]; Aiguo, Kong; Yongjie, Ding; Hengqiang, Zhang ^[1]

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1. Department of Chemistry, East China Normal University, Shanghai 200062 (China)

Various n-alkylviologens-intercalated vanadyl-vanadate (RV)V{sub 3}O{sub 8} were synthesized with the combination of redox and ions-exchange methods. The derivative compounds were characterized by X-ray diffraction (XRD), FT infrared spectroscopy (FTIR), X-ray photoelectron spectroscopy (XPS) and UV-vis diffuse reflectance spectroscopy (UV-vis DRS). The XRD results indicate that the interlayer spacing increases with the alkyl chain length of the alkylviologen cations. The FTIR data shows that alkylviologens were inserted into the interlayers of V{sub 3}O{sub 8}{sup 2-}. XPS data reveals that the vanadium ions in the intercalation compounds are mostly in a pentavalent V{sup 5+} state with some partially reduced to the V{sup 4+} state. The intercalation compounds have the strong absorption character in the ultraviolet and visible light region. Magnetic susceptibility indicates that the (ethylviologen) V{sub 3}O{sub 8} (EV3) is antiferromagnetic and possesses an ordered magnetic structure below 15 K. Above 15 K, EV3 exhibits paramagnetic behavior and a disordered magnetic structure. - Graphical abstract: The (001) reflection of the intercalation compounds shifting to a lower 2{theta} value in comparison with that of (NH{sub 4}){sub 2}V{sub 3}O{sub 8} implies the interlayer space was undergone expansion after intercalation. Highlights: > Novel alkylviologens-intercalated vanadyl-vanadate (RV)V{sub 3}O{sub 8} were synthesized. > Layered framework of V{sub 3}O{sub 8} was still maintained after alkylviologens intercalation. > The vanadium ions of intercalation compounds are composed of V{sup 5+} and V{sup 4+} cations. > Theses compounds have strong absorption in the ultraviolet and visible light region.

• OSTI ID: 21580240
• Journal Information: Journal of Solid State Chemistry, Vol. 184, Issue 9; Other Information: DOI: 10.1016/j.jssc.2011.07.001; PII: S0022-4596(11)00370-7; Copyright (c) 2011 Elsevier Science B.V., Amsterdam, The Netherlands, All rights reserved.; ISSN 0022-4596
• Country of Publication: United States
• Language: English

Related Subjects

37 INORGANIC
ORGANIC
PHYSICAL AND ANALYTICAL CHEMISTRY
ABSORPTION
ABSORPTION SPECTROSCOPY
ANTIFERROMAGNETISM
CATIONS
FOURIER TRANSFORMATION
INFRARED SPECTRA
MAGNETIC SUSCEPTIBILITY
VANADIUM IONS
VISIBLE RADIATION
X-RAY DIFFRACTION
X-RAY PHOTOELECTRON SPECTROSCOPY
CHARGED PARTICLES
COHERENT SCATTERING
DIFFRACTION
ELECTROMAGNETIC RADIATION
ELECTRON SPECTROSCOPY
INTEGRAL TRANSFORMATIONS
IONS
MAGNETIC PROPERTIES
MAGNETISM
PHOTOELECTRON SPECTROSCOPY
PHYSICAL PROPERTIES
RADIATIONS
SCATTERING
SORPTION
SPECTRA
SPECTROSCOPY
TRANSFORMATIONS