Journal article

PREPARATION AND CHARACTERIZATION OF DOPED WO3 PHOTOCATALYST POWDERS

M ASHOKKUMAR, P MARUTHAMUTHU

JOURNAL OF MATERIALS SCIENCE | CHAPMAN HALL LTD | Published : 1989

Abstract

WO3 semiconductor particles, useful in solar energy conversion processes, were doped with transition metal ions, Ti(III), V(IV), Cr(III), Mn(II), Fe(III), Co(II), Ni(II), Cu(II), Zn(II) and Ru(III) by a high-temperature sintering technique. The method of preparation of these photocatalysts is described in detail. The structural changes effected during sintering were investigated by X-ray powder diffraction (XRD) and scanning electron microscopy (SEM). The XRD analysis indicated that the monoclinic crystal structure of WO3 was not altered during sintering. SEM studies showed that the sizes of the particles ranged from 1 to 10 μm and the crystallinity was increased due to doping. The dopants w..

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