CoFe2O4/TiO2 nanocatalysts for the photocatalytic degradation of Reactive Red 120 in aqueous solutions in the presence and absence of electron acceptors

Panneerselvam Sathishkumar; Ramalinga Viswanathan Mangalaraja; Sambandam Anandan; Muthupandian Ashokkumar

doi:10.1016/j.cej.2013.01.036

CoFe₂O₄/TiO₂ nanocatalysts for the photocatalytic degradation of Reactive Red 120 in aqueous solutions in the presence and absence of electron acceptors

Panneerselvam Sathishkumar, Ramalinga Viswanathan Mangalaraja, Sambandam Anandan, Muthupandian Ashokkumar

Research output: Contribution to journal › Article › peer-review

144 Scopus citations

Abstract

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.

Original language	English
Pages (from-to)	302-310
Number of pages	9
Journal	Chemical Engineering Journal
Volume	220
DOIs	https://doi.org/10.1016/j.cej.2013.01.036
State	Published - 15 Mar 2013
Externally published	Yes

Keywords

CoFeO/TiO nanocatalyst
Electron acceptors
Photocatalytic degradation
Reactive Red 120

Access to Document

10.1016/j.cej.2013.01.036

Cite this

@article{04bb9f7aea284608b477e988a11bf101,

title = "CoFe2O4/TiO2 nanocatalysts for the photocatalytic degradation of Reactive Red 120 in aqueous solutions in the presence and absence of electron acceptors",

abstract = "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.",

keywords = "CoFeO/TiO nanocatalyst, Electron acceptors, Photocatalytic degradation, Reactive Red 120",

author = "Panneerselvam Sathishkumar and Mangalaraja, {Ramalinga Viswanathan} and Sambandam Anandan and Muthupandian Ashokkumar",

note = "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.",

year = "2013",

month = mar,

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doi = "10.1016/j.cej.2013.01.036",

language = "English",

volume = "220",

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journal = "Chemical Engineering Journal",

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CoFe₂O₄/TiO₂ nanocatalysts for the photocatalytic degradation of Reactive Red 120 in aqueous solutions in the presence and absence of electron acceptors. / Sathishkumar, Panneerselvam; Mangalaraja, Ramalinga Viswanathan; Anandan, Sambandam et al.
In: Chemical Engineering Journal, Vol. 220, 15.03.2013, p. 302-310.

Research output: Contribution to journal › Article › peer-review

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

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