Morphological micro-patterning of tubular-windows on crystalline K 2V 3O 8 sheets

Department of Chemistry-CICECO, University of Aveiro, Campus University, 3810-193 Aveiro, Portugal
Journal of Crystal Growth (Impact Factor: 1.7). 01/2005; 273(3):572-576. DOI: 10.1016/j.jcrysgro.2004.09.066


Single crystals of K2V3O8 have been synthesized using a mild hydrothermal method. The synthetic method allows morphological micro-patterning of well aligned tubular-windows on sheet-like K2V3O8 single crystals. The lateral dimensions of the tubular-windows range from 2 to 0.1μm and are ca. 80μm in depth.

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    • "KV3O8 was synthesized by acidification of the corresponding metavanadate solution at near ambient temperatures of about 60-80 C, but the quality of the single crystals was not good enough [7]. Good single crystals of KV3O8 were synthesized in low yield by hydrothermal reaction at 250 C of V2O5 powder with alkali metal nitrate, chloride, and sulfate solution [8], later K2V3O8 nanorods were prepared in low yield under solvothermal conditions at 200 C employing a reducing agent and ethanol as a solvent [13], and still later tubular-windows on sheet-like K2V3O8 single crystals were prepared in pure phase under hydrothermal conditions from KVO3–KOH–apidic acid as a mild reducing agent, buffer, and a potentially morphological directing agent at 180 C for 2 days [14]. This work follows up on our previous report from a similar reaction system [15] where the diamines incorporate into hybrid zinc-vanadium products. "
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