Fabrication of Zn₃V₂O₈ yellow phosphor from precursor aqueous solution of zinc acetate and peroxo-isopolyvanadic acid

Abstract

Zn 3 V 2 O 8 phosphors were synthesized by heat treatment of precursor powders obtained by evaporation of aqueous solutions of peroxo-isopolyvanadic acid and zinc acetate. A precursor solution with a Zn/V molar ratio of 3:1 and a heat-treatment temperature of 600°C gave a powder containing a mixture of Zn 3 V 2 O 8 and ZnO. The ZnO was removed by treatment with HCl, resulting in a single-phase Zn 3 V 2 O 8 powder; it showed yellow phosphorescence with a peak at 560 nm at an excitation wavelength of 350 nm.

Low-temperature synthesis of white-light-emitting CsVO₃ nanoparticles by an aqueous solution route

“…V-IPA was prepared according to a previous report, 5) and the method was as follows. Vanadium powder (Wako, Osaka, Japan) was mixed with an H 2 O 2 aqueous solution, and cooled using an ice bath.…”

Vanadium oxide-based photochromic composite film

“…Peroxo-iso-poly vanadic acid (V-IPA), which is readily formed when H 2 O 2 reacts with vanadium metal, is highly soluble in water. 13,14 Therefore, we expect to fabricate vanadium oxide-based photochromic composite lms, containing sub nanometer size particles, using V-IPA.…”