TY - JOUR
T1 - CoFe2O4/TiO2 nanocatalysts for the photocatalytic degradation of Reactive Red 120 in aqueous solutions in the presence and absence of electron acceptors
AU - Sathishkumar, Panneerselvam
AU - Mangalaraja, Ramalinga Viswanathan
AU - Anandan, Sambandam
AU - Ashokkumar, Muthupandian
N1 - Funding Information:
SA thanks CSIR, New Delhi for the sanction of major research fund (CSIR reference No. 02(0021)/11/EMR-II). PS would like to thank FONDECYT Postdoctorado Project No.: 3120095, Government of Chile, Santiago, for financial assistance.
PY - 2013/3/15
Y1 - 2013/3/15
N2 - Magnetic CoFe2O4 and CoFe2O4/TiO2 nanocatalysts were prepared by a co-precipitation method in which CoFe2O4 induced the formation of thermodynamically more stable rutile phase of TiO2. The structural and elemental analyses confirmed the formation of CoFe2O4 and CoFe2O4/TiO2 nanocatalysts and the specific atomic ratios of Ti, Co, Fe, and O in these catalysts. The presence of Co2+ and Fe3+ cations in its oxide forms on the surface of TiO2 led to visible light absorption in the wavelength range 550-650nm. The band gap calculated by Tauc approach showed ∼3.2, 1.1 and 2.8eV for TiO2, CoFe2O4 and CoFe2O4/TiO2 nanocatalysts, respectively. The photocatalytic degradation of Reactive Red 120 (RR120) was studied by varying its concentration and the amount of nanocatalyst in order to attain a maximum degradation. The role of electron acceptors in the photocatalytic degradation of RR120 was studied in the presence of the magnetic nanocatalysts.
AB - Magnetic CoFe2O4 and CoFe2O4/TiO2 nanocatalysts were prepared by a co-precipitation method in which CoFe2O4 induced the formation of thermodynamically more stable rutile phase of TiO2. The structural and elemental analyses confirmed the formation of CoFe2O4 and CoFe2O4/TiO2 nanocatalysts and the specific atomic ratios of Ti, Co, Fe, and O in these catalysts. The presence of Co2+ and Fe3+ cations in its oxide forms on the surface of TiO2 led to visible light absorption in the wavelength range 550-650nm. The band gap calculated by Tauc approach showed ∼3.2, 1.1 and 2.8eV for TiO2, CoFe2O4 and CoFe2O4/TiO2 nanocatalysts, respectively. The photocatalytic degradation of Reactive Red 120 (RR120) was studied by varying its concentration and the amount of nanocatalyst in order to attain a maximum degradation. The role of electron acceptors in the photocatalytic degradation of RR120 was studied in the presence of the magnetic nanocatalysts.
KW - CoFeO/TiO nanocatalyst
KW - Electron acceptors
KW - Photocatalytic degradation
KW - Reactive Red 120
UR - http://www.scopus.com/inward/record.url?scp=84874004903&partnerID=8YFLogxK
U2 - 10.1016/j.cej.2013.01.036
DO - 10.1016/j.cej.2013.01.036
M3 - Article
AN - SCOPUS:84874004903
SN - 1385-8947
VL - 220
SP - 302
EP - 310
JO - Chemical Engineering Journal
JF - Chemical Engineering Journal
ER -