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.
| Original language | English |
|---|---|
| Pages (from-to) | 2243-2249 |
| Number of pages | 7 |
| Journal | Solid State Ionics |
| Volume | 176 |
| Issue number | 29-30 |
| DOIs | |
| Publication status | Published - 2005 Jan 1 |
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All Science Journal Classification (ASJC) codes
- Chemistry(all)
- Materials Science(all)
- Condensed Matter Physics
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Synthesis and structural properties of stoichiometric and oxygen deficient CuV2O6 prepared via co-precipitation method. / Wei, Y. J.; Nam, Kyung Wan; Chen, G.; Ryu, Chang Wan; Kim, Kwang Bum.
In: Solid State Ionics, Vol. 176, No. 29-30, 01.01.2005, p. 2243-2249.Research output: Contribution to journal › Article
TY - JOUR
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
PY - 2005/1/1
Y1 - 2005/1/1
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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U2 - 10.1016/j.ssi.2005.06.018
DO - 10.1016/j.ssi.2005.06.018
M3 - Article
VL - 176
SP - 2243
EP - 2249
JO - Solid State Ionics
JF - Solid State Ionics
SN - 0167-2738
IS - 29-30
ER -