Synthesis and structural properties of stoichiometric and oxygen deficient CuV2O6 prepared via co-precipitation method

Y. J. Wei; Kyung Wan Nam; G. Chen; Chang Wan Ryu; Kwang Bum Kim

doi:10.1016/j.ssi.2005.06.018

Synthesis and structural properties of stoichiometric and oxygen deficient CuV₂O₆ prepared via co-precipitation method

Y. J. Wei, Kyung Wan Nam, G. Chen, Chang Wan Ryu, Kwang Bum Kim

Department of Materials Science and Engineering

Research output: Contribution to journal › Article › peer-review

29 Citations (Scopus)

Abstract

Copper vanadates were synthesized using co-precipitation method. Scanning electron microscopy showed that the crystallinity of the materials increased with heat treatment temperature. X-ray diffraction study showed the material heat treated at 600 °C was stoichiometric triclinic α-CuV ₂O₆, whereas the material heat treated at 400 °C was an oxygen deficient counterpart of α-CuV₂O₅, which was CuV₂O_5.88 obtained from the thermogravimetric data. X-ray absorption near edge spectroscopy confirmed a valence state of +5 for V in α-CuV₂O₆, whereas a valence state lower than +5 in CuV₂O_5.88. The symmetrical degree of the [VO₆] octahedron in α-CuV₂O₆ is higher than that of orthorhombic V₂O₅ and oxygen deficiency CuV ₂O_5.88. The Raman band of the V-O¹ stretching vibration showed a red shift for copper vanadates with respect to orthorhombic V₂O₅ because of the electrostatic attraction between Cu and O¹ atoms. Moreover, the V⁴⁺-O¹ stretching vibration was observed for oxygen deficient CuV₂O_5.88.

Original language	English
Pages (from-to)	2243-2249
Number of pages	7
Journal	Solid State Ionics
Volume	176
Issue number	29-30
DOIs	https://doi.org/10.1016/j.ssi.2005.06.018
Publication status	Published - 2005 Sep

Bibliographical note

Funding Information:
This work was supported by the Ministry of Information and Communication of Korea [“Support Project of University Information Technology Research Center” supervised by the Institute of Information Technology Assessment (IITA)] and by KOSEF through the Research Center for Energy Conversion and Storage (RCECS), Korea Science and Engineering Foundation (No. 2000-2-30100-012-3). One of the authors, Y. J. Wei, is grateful to Yonsei University and the RCECS for financial support.

All Science Journal Classification (ASJC) codes

Chemistry(all)
Materials Science(all)
Condensed Matter Physics

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@article{07dce6d2465e4e38b12dac20488b5e7f,

title = "Synthesis and structural properties of stoichiometric and oxygen deficient CuV2O6 prepared via co-precipitation method",

abstract = "Copper vanadates were synthesized using co-precipitation method. Scanning electron microscopy showed that the crystallinity of the materials increased with heat treatment temperature. X-ray diffraction study showed the material heat treated at 600 °C was stoichiometric triclinic α-CuV 2O6, whereas the material heat treated at 400 °C was an oxygen deficient counterpart of α-CuV2O5, which was CuV2O5.88 obtained from the thermogravimetric data. X-ray absorption near edge spectroscopy confirmed a valence state of +5 for V in α-CuV2O6, whereas a valence state lower than +5 in CuV2O5.88. The symmetrical degree of the [VO6] octahedron in α-CuV2O6 is higher than that of orthorhombic V2O5 and oxygen deficiency CuV 2O5.88. The Raman band of the V-O1 stretching vibration showed a red shift for copper vanadates with respect to orthorhombic V2O5 because of the electrostatic attraction between Cu and O1 atoms. Moreover, the V4+-O1 stretching vibration was observed for oxygen deficient CuV2O5.88.",

author = "Wei, {Y. J.} and Nam, {Kyung Wan} and G. Chen and Ryu, {Chang Wan} and Kim, {Kwang Bum}",

note = "Funding Information: This work was supported by the Ministry of Information and Communication of Korea [“Support Project of University Information Technology Research Center” supervised by the Institute of Information Technology Assessment (IITA)] and by KOSEF through the Research Center for Energy Conversion and Storage (RCECS), Korea Science and Engineering Foundation (No. 2000-2-30100-012-3). One of the authors, Y. J. Wei, is grateful to Yonsei University and the RCECS for financial support. ",

year = "2005",

month = sep,

doi = "10.1016/j.ssi.2005.06.018",

language = "English",

volume = "176",

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journal = "Solid State Ionics",

issn = "0167-2738",

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T1 - Synthesis and structural properties of stoichiometric and oxygen deficient CuV2O6 prepared via co-precipitation method

AU - Wei, Y. J.

AU - Nam, Kyung Wan

AU - Chen, G.

AU - Ryu, Chang Wan

AU - Kim, Kwang Bum

N1 - Funding Information: This work was supported by the Ministry of Information and Communication of Korea [“Support Project of University Information Technology Research Center” supervised by the Institute of Information Technology Assessment (IITA)] and by KOSEF through the Research Center for Energy Conversion and Storage (RCECS), Korea Science and Engineering Foundation (No. 2000-2-30100-012-3). One of the authors, Y. J. Wei, is grateful to Yonsei University and the RCECS for financial support.

PY - 2005/9

Y1 - 2005/9

N2 - Copper vanadates were synthesized using co-precipitation method. Scanning electron microscopy showed that the crystallinity of the materials increased with heat treatment temperature. X-ray diffraction study showed the material heat treated at 600 °C was stoichiometric triclinic α-CuV 2O6, whereas the material heat treated at 400 °C was an oxygen deficient counterpart of α-CuV2O5, which was CuV2O5.88 obtained from the thermogravimetric data. X-ray absorption near edge spectroscopy confirmed a valence state of +5 for V in α-CuV2O6, whereas a valence state lower than +5 in CuV2O5.88. The symmetrical degree of the [VO6] octahedron in α-CuV2O6 is higher than that of orthorhombic V2O5 and oxygen deficiency CuV 2O5.88. The Raman band of the V-O1 stretching vibration showed a red shift for copper vanadates with respect to orthorhombic V2O5 because of the electrostatic attraction between Cu and O1 atoms. Moreover, the V4+-O1 stretching vibration was observed for oxygen deficient CuV2O5.88.

AB - Copper vanadates were synthesized using co-precipitation method. Scanning electron microscopy showed that the crystallinity of the materials increased with heat treatment temperature. X-ray diffraction study showed the material heat treated at 600 °C was stoichiometric triclinic α-CuV 2O6, whereas the material heat treated at 400 °C was an oxygen deficient counterpart of α-CuV2O5, which was CuV2O5.88 obtained from the thermogravimetric data. X-ray absorption near edge spectroscopy confirmed a valence state of +5 for V in α-CuV2O6, whereas a valence state lower than +5 in CuV2O5.88. The symmetrical degree of the [VO6] octahedron in α-CuV2O6 is higher than that of orthorhombic V2O5 and oxygen deficiency CuV 2O5.88. The Raman band of the V-O1 stretching vibration showed a red shift for copper vanadates with respect to orthorhombic V2O5 because of the electrostatic attraction between Cu and O1 atoms. Moreover, the V4+-O1 stretching vibration was observed for oxygen deficient CuV2O5.88.

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