H2V3O8 single-crystal nanobelts:: Hydrothermal preparation and formation mechanism

被引:34
作者
Chang, Kuo-Hsin [1 ]
Hu, Chi-Chang [1 ]
机构
[1] Natl Chung Cheng Univ, Dept Chem Engn, Chiayi 621, Taiwan
关键词
H2V3O8 single-crystal nanobelts; crystal growth mechanism; hydrothermal synthesis;
D O I
10.1016/j.actamat.2007.07.018
中图分类号
T [工业技术];
学科分类号
08 ;
摘要
The formation mechanism of highly pure H2V3O8 Single-crystal nanobelts is clarified in a hydrothermal synthesis process with a specially designed precursor solution containing V5+ and V4+ in a fixed ratio of 2/1. This specially designed precursor solution provides an additional merit for the rapid fabrication of highly pure H2V3O8 nanobelts through a simple hydrothermal route. During the hydrothermal synthesis process, V5+ species initially reacts with some V4+ to form a metastable, whisker-like V10O24.nH(2)O (n < 12). The V5+ species dissolved from the whisker-like V10O24 . nH(2)O reacts continuously with residual V4+ ions in the precursor solution to form seeds of H2V3O8 single-crystals. The anisotropic growth of H2V3O8 single-crystal nanobelts with length > 10 mu m and width between 50 and 150 nm occurs with prolonging the hydrothermal time. Finally, highly pure H2V3O8 single-crystal nanobelts are obtained when the hydrothermal time reaches 4 h. The textures of vanadium oxides prepared at different hydrothermal times are systematically compared through X-ray diffraction, transmission electron microscopic and X-ray photoelectron spectroscopic analyses to clarify the synthesis mechanism of H2V3O8 single-crystal nanobelts. (c) 2007 Acta Materialia Inc. Published by Elsevier Ltd. All rights reserved.
引用
收藏
页码:6192 / 6197
页数:6
相关论文
共 41 条
[1]   Synthesis of vanadium oxide gels from peroxovanadic acid solutions:: A 51V NMR study [J].
Alonso, B ;
Livage, J .
JOURNAL OF SOLID STATE CHEMISTRY, 1999, 148 (01) :16-19
[2]   Nanostructured materials for advanced energy conversion and storage devices [J].
Aricò, AS ;
Bruce, P ;
Scrosati, B ;
Tarascon, JM ;
Van Schalkwijk, W .
NATURE MATERIALS, 2005, 4 (05) :366-377
[3]   Coalescence inhibition of hydrous RuO2 crystallites prepared by a hydrothermal method [J].
Chang, Kuo-Hsin ;
Hu, Chi-Chang .
APPLIED PHYSICS LETTERS, 2006, 88 (19)
[4]   Hydrothermal synthesis of vanadium oxides [J].
Chirayil, T ;
Zavalij, PY ;
Whittingham, MS .
CHEMISTRY OF MATERIALS, 1998, 10 (10) :2629-2640
[5]   The surface properties of vanadium compounds by X-ray photoelectron spectroscopy [J].
Choi, JG .
APPLIED SURFACE SCIENCE, 1999, 148 (1-2) :64-72
[6]   Vanadia gel synthesis via peroxovanadate precursors.: 1.: In situ laser Raman and 51V NMR characterization of the gelation process [J].
Fontenot, CJ ;
Wiench, JW ;
Pruski, M ;
Schrader, GL .
JOURNAL OF PHYSICAL CHEMISTRY B, 2000, 104 (49) :11622-11631
[7]   PREPARATION AND LITHIUM INTERCALATION OF A NEW VANADIUM-OXIDE WITH A 2-DIMENSIONAL STRUCTURE [J].
HIBINO, M ;
UGAJI, M ;
KISHIMOTO, A ;
KUDO, T .
SOLID STATE IONICS, 1995, 79 :239-244
[8]   Hydrothermal synthesis of V2O5•1.9H2O single crystals with novel electrochemical characteristics [J].
Hu, CC ;
Chang, KH .
ELECTROCHEMICAL AND SOLID STATE LETTERS, 2004, 7 (11) :A400-A403
[9]   Design and tailoring of the nanotubular arrayed architecture of hydrous RuO2 for next generation supercapacitors [J].
Hu, Chi-Chang ;
Chang, Kuo-Hsin ;
Lin, Ming-Champ ;
Wu, Yung-Tai .
NANO LETTERS, 2006, 6 (12) :2690-2695
[10]   Field-effect transistor made of individual V2O5 nanofibers [J].
Kim, GT ;
Muster, J ;
Krstic, V ;
Park, JG ;
Park, YW ;
Roth, S ;
Burghard, M .
APPLIED PHYSICS LETTERS, 2000, 76 (14) :1875-1877