TY - JOUR
T1 - Visible light assisted photocatalytic activity of TiO2-metal vanadate (M=Sr, Ag and Cd) nanocomposites
AU - Vignesh, K.
AU - Hariharan, R.
AU - Rajarajan, M.
AU - Suganthi, A.
PY - 2013
Y1 - 2013
N2 - TiO2-metal vanadate nanocomposites (TiO2-MV) were synthesized by the precipitation method and successfully characterized using UV-visible diffuse reflectance spectroscopy (UV-vis-DRS), powder X-ray diffraction (XRD), photoluminescence (PL) spectroscopy, scanning electron microscopy (SEM), transmission electron microscopy (TEM) and energy dispersive X-ray spectroscopy (EDX) techniques. The photocatalytic activity of TiO 2-MV was investigated for the degradation of fast green (FG) dye under visible light irradiation. The photocatalytic activity of TiO 2-silver vanadate [TiO2-Ag3VO4] was found to be much higher than that of TiO2-cadmium vanadate [TiO 2-CdV2O6], TiO2-strontium vanadate [TiO2-Sr3(VO4)2] and TiO 2. The effect of operational parameters such as pH, photocatalyst concentration and initial dye concentration on the photodegradation of FG was examined in detail. The mineralization of FG was confirmed by chemical oxygen demand (COD) and total organic carbon (TOC) measurements. Moreover, TiO 2-Ag3VO4 was found to be a reusable photocatalyst.
AB - TiO2-metal vanadate nanocomposites (TiO2-MV) were synthesized by the precipitation method and successfully characterized using UV-visible diffuse reflectance spectroscopy (UV-vis-DRS), powder X-ray diffraction (XRD), photoluminescence (PL) spectroscopy, scanning electron microscopy (SEM), transmission electron microscopy (TEM) and energy dispersive X-ray spectroscopy (EDX) techniques. The photocatalytic activity of TiO 2-MV was investigated for the degradation of fast green (FG) dye under visible light irradiation. The photocatalytic activity of TiO 2-silver vanadate [TiO2-Ag3VO4] was found to be much higher than that of TiO2-cadmium vanadate [TiO 2-CdV2O6], TiO2-strontium vanadate [TiO2-Sr3(VO4)2] and TiO 2. The effect of operational parameters such as pH, photocatalyst concentration and initial dye concentration on the photodegradation of FG was examined in detail. The mineralization of FG was confirmed by chemical oxygen demand (COD) and total organic carbon (TOC) measurements. Moreover, TiO 2-Ag3VO4 was found to be a reusable photocatalyst.
KW - Metal vanadate
KW - Nanocomposite
KW - Photocatalysis
KW - TiO
KW - Visible light
UR - http://www.scopus.com/inward/record.url?scp=84880054828&partnerID=8YFLogxK
U2 - 10.1016/j.mssp.2013.04.025
DO - 10.1016/j.mssp.2013.04.025
M3 - Article
AN - SCOPUS:84880054828
SN - 1369-8001
VL - 16
SP - 1521
EP - 1530
JO - Materials Science in Semiconductor Processing
JF - Materials Science in Semiconductor Processing
IS - 6
ER -