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

32 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

Access to Document

10.1016/j.ssi.2005.06.018

Cite this

@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",

pages = "2243--2249",

journal = "Solid State Ionics",

issn = "0167-2738",

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number = "29-30",

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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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