Rare Earth Free Zn3V2O8 Phosphor with Controlled Microstructure and Its Photocatalytic Activity. (5th August 2013)

• Record Type: Journal Article
• Authors: Luitel, Hom Nath; Chand, Rumi; Torikai, Toshio; Yada, Mitsunori; Watari, Takanori
• Other Names: Augugliaro Vincenzo Academic Editor.
• Is Part Of: International journal of photoenergy. Volume 2013(2013)
• Publication Date: 2013-08-05
• Subjects: Photochemistry -- Periodicals; Photobiology -- Periodicals; Chemistry, Physical and theoretical -- Periodicals; Photochimie; Photobiologie; Chimie physique et théorique; Chemistry, Physical and theoretical; Photobiology; Photochemistry; Electronic journals; Periodicals; 541.35
• DOI: 10.1155/2013/410613
• Languages: English
• ISSNs: 1110-662X

Abstract

Abstract : Microsphere of rare earth free phosphor, Zn 3 V 2 O 8, with broadband yellowish white emission was synthesized by combustion route and compared with the hydrothermal, sol-gel, and solid state reaction methods. The phosphor samples were characterized by X-ray diffraction and scanning electron microscopy. UV-visible absorption and photoluminescence (PL) emission and excitation spectra were investigated for these phosphors.Zn 3 V 2 O 8 phosphor containing 10 mol% of H3 BO3 flux exhibited enhanced PL emission showing broadband from 450 nm to 750 nm. Effect of stoichiometry of Zn and V on the host lattice and its effect on the PL emission spectra were studied. Series of Mg3 V2 O8, Ca 3 V 2 O 8, and Sr3 V2 O8 phosphors were also synthesized and compared to theZn 3 V 2 O 8 phosphor in terms of PL emission and internal quantum yield, and it was found thatZn 3 V 2 O 8 is the most efficient phosphor among the other phosphors studied with quantum yield of 60%. The visible light irradiated photocatalytic activity of these phosphors was investigated and it was found that the hydrothermalZn 3 V 2 O 8 exhibited enhanced activity.