Preparation of VO2 by Oxalic Acid Reduction Method
An Xin-Xin1,2; Jing Xi-Ping1; Jiao Huan2
AbstractOxalic acid reduction method was developed for preparing vanadium oxides with various low vanadium valence states by heating the mixture of vanadium pentoxide(V2O5) with suitable amounts of oxalic acid(H2C2O4) in sealed quarts tube under high-purity N-2 at 600 degrees C for 2 h. When the molar ratio of V2O5 to H2C2O4 was varied from 1: 0.5 to 1:2.5, pure phase samples V6O13, VO2 and V2O3 could be obtained. The VO2 sample was characterized by XRD, XPS, EPR as well as electric and magnetic measurements. The title material has a structure phase transition around 65 degrees C, corresponding to a semiconductor-to-metal transition. With this transition, the resistivity and magnetic susceptibility are with discontinuous change near the phase transition temperature, in reasonable agreements with the reported data.
KeywordVo2 Preparation Oxalic Acid Reduction
Indexed BySCI
WOS IDWOS:000280183900005
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Cited Times:1[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Corresponding AuthorJing Xi-Ping
Affiliation1.Peking Univ, Beijing Natl Lab Mol Sci, State Key Lab Rare Earth Mat Chem & Applicat, Coll Chem & Mol Engn, Beijing 100871, Peoples R China
2.Shaanxi Normal Univ, Key Lab Macromol Sci Shaanxi Prov, Sch Chem & Mat Sci, Xian 710062, Peoples R China
Recommended Citation
GB/T 7714
An Xin-Xin,Jing Xi-Ping,Jiao Huan. Preparation of VO2 by Oxalic Acid Reduction Method[J]. CHINESE JOURNAL OF INORGANIC CHEMISTRY,2010,26(7):1159-1164.
APA An Xin-Xin,Jing Xi-Ping,&Jiao Huan.(2010).Preparation of VO2 by Oxalic Acid Reduction Method.CHINESE JOURNAL OF INORGANIC CHEMISTRY,26(7),1159-1164.
MLA An Xin-Xin,et al."Preparation of VO2 by Oxalic Acid Reduction Method".CHINESE JOURNAL OF INORGANIC CHEMISTRY 26.7(2010):1159-1164.
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