Photocatalytic reduction of CO2 into methanol over CuFe2O4/TiO2 under visible light irradiation

M. Rahim Uddin; Maksudur R. Khan; M. Wasikur Rahman; Abu Yousuf; Chin Kui Cheng

doi:10.1007/s11144-015-0911-7

Photocatalytic reduction of CO₂ into methanol over CuFe₂O₄/TiO₂ under visible light irradiation

M. Rahim Uddin, Maksudur R. Khan, M. Wasikur Rahman, Abu Yousuf, Chin Kui Cheng

Chemical and Petroleum Engineering

Universiti Malaysia Pahang

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

61 Scopus citations

Abstract

The present study aims to focus the photocatalytic reduction of carbon dioxide (CO₂) into methanol on TiO₂ loaded copper ferrite (CuFe₂O₄) photocatalyst under visible light (500 W xenon lamp) irradiation. In this perspective, CuFe₂O₄ and CuFe₂O₄/TiO₂ photocatalysts were synthesized following the sol-gel method from copper(II) nitrate, Cu(NO₃)₂·3H₂O (99 %) and iron(III) nitrate, Fe(NO₃)_3-9H₂O (99 %) as precursors. The phases and crystallite size of the photocatalysts were characterized by X-ray diffraction (XRD), morphology by scanning electron microscopy (SEM), absorption spectrum by ultraviolet-visible spectroscopy (UV-Vis), electron-hole (e^-/h⁺) recombination process by photoluminescence spectrophotometer, and elemental compositions by energy dispersive X-ray spectroscopy (EDX) instruments. The loading of TiO₂ on CuFe₂O₄ enhanced the photocatalytic activity in the visible light range. The enhanced photoactivity in CuFe₂O₄/TiO₂ semiconductor catalyst can be attributed to interfacial transfer of photogenerated charges, which led to effective charge separation and inhibited the recombination of photogenerated electron-hole (e^-/h⁺) pairs. Methanol was observed as the main product over CuFe₂O₄/TiO₂ and the photocatalytic activity of CuFe₂O₄/TiO₂ for CO₂ reduction was found to be about three times higher (651 μmol/g_cat L) than that of CuFe₂O₄ photocatalyst which might be due to the modification of band gap through TiO₂ loading.

Original language	British English
Pages (from-to)	589-604
Number of pages	16
Journal	Reaction Kinetics, Mechanisms and Catalysis
Volume	116
Issue number	2
DOIs	https://doi.org/10.1007/s11144-015-0911-7
State	Published - 30 Jul 2015

Keywords

Band gap energy
CO reduction
CuFeO/TiO photocatalyst
Methanol
Visible light irradiation

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10.1007/s11144-015-0911-7

Cite this

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title = "Photocatalytic reduction of CO2 into methanol over CuFe2O4/TiO2 under visible light irradiation",

abstract = "The present study aims to focus the photocatalytic reduction of carbon dioxide (CO2) into methanol on TiO2 loaded copper ferrite (CuFe2O4) photocatalyst under visible light (500 W xenon lamp) irradiation. In this perspective, CuFe2O4 and CuFe2O4/TiO2 photocatalysts were synthesized following the sol-gel method from copper(II) nitrate, Cu(NO3)2·3H2O (99 %) and iron(III) nitrate, Fe(NO3)3-9H2O (99 %) as precursors. The phases and crystallite size of the photocatalysts were characterized by X-ray diffraction (XRD), morphology by scanning electron microscopy (SEM), absorption spectrum by ultraviolet-visible spectroscopy (UV-Vis), electron-hole (e-/h+) recombination process by photoluminescence spectrophotometer, and elemental compositions by energy dispersive X-ray spectroscopy (EDX) instruments. The loading of TiO2 on CuFe2O4 enhanced the photocatalytic activity in the visible light range. The enhanced photoactivity in CuFe2O4/TiO2 semiconductor catalyst can be attributed to interfacial transfer of photogenerated charges, which led to effective charge separation and inhibited the recombination of photogenerated electron-hole (e-/h+) pairs. Methanol was observed as the main product over CuFe2O4/TiO2 and the photocatalytic activity of CuFe2O4/TiO2 for CO2 reduction was found to be about three times higher (651 μmol/gcat L) than that of CuFe2O4 photocatalyst which might be due to the modification of band gap through TiO2 loading.",

keywords = "Band gap energy, CO reduction, CuFeO/TiO photocatalyst, Methanol, Visible light irradiation",

author = "Uddin, {M. Rahim} and Khan, {Maksudur R.} and Rahman, {M. Wasikur} and Abu Yousuf and Cheng, {Chin Kui}",

note = "Publisher Copyright: {\textcopyright} 2015 Akad{\'e}miai Kiad{\'o}.",

year = "2015",

month = jul,

day = "30",

doi = "10.1007/s11144-015-0911-7",

language = "British English",

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T1 - Photocatalytic reduction of CO2 into methanol over CuFe2O4/TiO2 under visible light irradiation

AU - Uddin, M. Rahim

AU - Khan, Maksudur R.

AU - Rahman, M. Wasikur

AU - Yousuf, Abu

AU - Cheng, Chin Kui

PY - 2015/7/30

Y1 - 2015/7/30

N2 - The present study aims to focus the photocatalytic reduction of carbon dioxide (CO2) into methanol on TiO2 loaded copper ferrite (CuFe2O4) photocatalyst under visible light (500 W xenon lamp) irradiation. In this perspective, CuFe2O4 and CuFe2O4/TiO2 photocatalysts were synthesized following the sol-gel method from copper(II) nitrate, Cu(NO3)2·3H2O (99 %) and iron(III) nitrate, Fe(NO3)3-9H2O (99 %) as precursors. The phases and crystallite size of the photocatalysts were characterized by X-ray diffraction (XRD), morphology by scanning electron microscopy (SEM), absorption spectrum by ultraviolet-visible spectroscopy (UV-Vis), electron-hole (e-/h+) recombination process by photoluminescence spectrophotometer, and elemental compositions by energy dispersive X-ray spectroscopy (EDX) instruments. The loading of TiO2 on CuFe2O4 enhanced the photocatalytic activity in the visible light range. The enhanced photoactivity in CuFe2O4/TiO2 semiconductor catalyst can be attributed to interfacial transfer of photogenerated charges, which led to effective charge separation and inhibited the recombination of photogenerated electron-hole (e-/h+) pairs. Methanol was observed as the main product over CuFe2O4/TiO2 and the photocatalytic activity of CuFe2O4/TiO2 for CO2 reduction was found to be about three times higher (651 μmol/gcat L) than that of CuFe2O4 photocatalyst which might be due to the modification of band gap through TiO2 loading.

AB - The present study aims to focus the photocatalytic reduction of carbon dioxide (CO2) into methanol on TiO2 loaded copper ferrite (CuFe2O4) photocatalyst under visible light (500 W xenon lamp) irradiation. In this perspective, CuFe2O4 and CuFe2O4/TiO2 photocatalysts were synthesized following the sol-gel method from copper(II) nitrate, Cu(NO3)2·3H2O (99 %) and iron(III) nitrate, Fe(NO3)3-9H2O (99 %) as precursors. The phases and crystallite size of the photocatalysts were characterized by X-ray diffraction (XRD), morphology by scanning electron microscopy (SEM), absorption spectrum by ultraviolet-visible spectroscopy (UV-Vis), electron-hole (e-/h+) recombination process by photoluminescence spectrophotometer, and elemental compositions by energy dispersive X-ray spectroscopy (EDX) instruments. The loading of TiO2 on CuFe2O4 enhanced the photocatalytic activity in the visible light range. The enhanced photoactivity in CuFe2O4/TiO2 semiconductor catalyst can be attributed to interfacial transfer of photogenerated charges, which led to effective charge separation and inhibited the recombination of photogenerated electron-hole (e-/h+) pairs. Methanol was observed as the main product over CuFe2O4/TiO2 and the photocatalytic activity of CuFe2O4/TiO2 for CO2 reduction was found to be about three times higher (651 μmol/gcat L) than that of CuFe2O4 photocatalyst which might be due to the modification of band gap through TiO2 loading.

KW - Band gap energy

KW - CO reduction

KW - CuFeO/TiO photocatalyst

KW - Methanol

KW - Visible light irradiation

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VL - 116

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JO - Reaction Kinetics, Mechanisms and Catalysis

JF - Reaction Kinetics, Mechanisms and Catalysis

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