抄録
We studied effects of pyridine and H2O on the synthesis of monodisperse and spherical V2O5 fine particles by hydrolysis of vanadium isopropoxide (VO(OiPr)3) in acetone/pyridine mixture solutions. The average size of the V2O5 fine particles strongly depends on the concentration of pyridine but shows little dependence on the concentration of H2O. The size distribution of the V2O5 fine particles, on the other hand, is affected by the concentration of both pyridine and H2O: The size distribution increases with increasing the concentration of H2O while it decreases with increasing the concentration of pyridine. We succeeded in synthesizing the spherical V2O5 fine particles with the sizes from 100 to 700 nm by adjusting the concentration of pyridine and H2O while keeping the narrow size distribution. These V2O5 fine particles could be self-assembled to form three-dimensionally ordered colloidal crystals.
