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

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

doi:10.1007/s11144-015-0911-7

Cited by 59 publications

(24 citation statements)

References 32 publications

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“…The slight increase in the crystallite size may be due to the strain effect when the TiO2 was doped onto CuFe2O4. The similar observation was also found in the other literatures [18,19]. This calculation was done by considering the 2θ of 36.16º (maximum intense peak).…”

Section: Resultssupporting

confidence: 85%

Synthesis of Titania Doped Copper Ferrite Photocatalyst and Its Photoactivity towards Methylene Blue Degradation under Visible Light Irradiation

Arifin

Karim

Abdullah

et al. 2019

Bull. Chem. React. Eng. Catal.

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This paper reports the photocatalytic decomposition of methylene blue (MB) over titania doped copper ferrite, CuFe2O4/TiO2 with 50 wt% loading, synthesized via sol-gel method. The synthesized photocatalyst was characterized by X-ray diffraction, UV-vis diffuse reflectance, photoluminescence, and Mott-Schottky (MS) analysis and linear sweep voltammetry (LSV). The catalyst loadings were varied from 0.25-1.0 g/L and the optimum catalyst loading found to be 0.5 g/L. The maximum conversion achieved at this optimized CuFe2O4 concentration was 83.7 %. The other loadings produced slightly lower conversions at 82.7%, 80.6% and 80.0%, corresponding to 0.25, 1.00, and 0.75 g/L after 3 hours of irradiation. The study on the effect of initial concentration indicated that 20 ppm as the optimum concentration, tested with 0.5 g/L catalyst loading. The spent catalyst was used for the recyclability test and demonstrated a high longevity with a degradation efficiency less than 6 % for each time interval. The novelty of this study lies on the new application of photocatalytic material, CuFe2O4/TiO2 on thiazine dye that shows remarkable activity and reusability performance under visible light irradiation. Copyright

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Section: Resultssupporting

confidence: 85%

Synthesis of Titania Doped Copper Ferrite Photocatalyst and Its Photoactivity towards Methylene Blue Degradation under Visible Light Irradiation

Arifin

Karim

Abdullah

et al. 2019

Bull. Chem. React. Eng. Catal.

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“…In addition, it shows an excellent chemical stability in basic medium makes it very attractive to be used as catalyst [19]. Recently in our research, CuFe2O4 has been synthesized using sol-gel method and used for photocatalytic reduction of CO2 where 220 µmol/gcat.L of methanol was obtained as product [25]. Due to the low band gap of CuFe2O4 it is advantageous to be used as visi-ble light active catalyst, however the high e -/h + recombination rate suppressed its photocatalytic efficiency [23,25].…”

Section: Introductionmentioning

confidence: 99%

Electrochemical Study of Copper Ferrite as a Catalyst for CO2 Photoelectrochemical Reduction

Karim

Ong

Abdullah

et al. 2017

Bull. Chem. React. Eng. Catal.

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In this work, p-type CuFe2O4 was synthesized by sol gel method. The prepared CuFe2O4 was used as photocathode catalyst for photoelectrochemical (PEC) CO2 reduction. The XRD, UV-Visible Spectroscopy (UV-Vis), and Mott-Schottky (MS) experiments were done to characterize the catalyst. Linear sweep voltammetry (LSV) was employed to evaluate the visible light (λ>400 nm) effect of this catalyst for CO2 reduction. The band gap energy of the catalyst was calculated from the UV-Vis and was found 1.30 eV. Flat band potential of the prepared CuFe2O4 was also calculated and found 0.27 V versus Ag/AgCl. Under light irradiation in the CO2-saturated NaHCO3 solution, a remarkable current development associated with CO2 reduction was found during LSV for the prepared electrode from onset potential -0.89 V with a peak current emerged at -1.01 V (vs Ag/AgCl) representing the occurrence of CO2 reduction reaction. In addition, the mechanism of PEC was proposed for the photocathode where the necessity of a bias potential in the range of 0.27 to ~ -1.0 V vs Ag/AgCl was identified which could effectively inhibit the electron-hole (e-/h+) recombination process leading to an enhancement of CO2 reduction reactions. Copyright © 2018 BCREC Group. All rights reservedReceived: 4th July 2017; Revised: 5th November 2017; Accepted: 15th November 2017; Available online: 11st June 2018; Published regularly: 1st August 2018How to Cite: Karim, K.M.R., Ong, H.R., Abdullah, H., Yousuf, A., Cheng, C.K., Khan, M.K.R. (2018). Electrochemical Study of Copper Ferrite as a Catalyst for CO2 Photoelectrochemical Reduction. Bulletin of Chemical Reaction Engineering & Catalysis, 13 (2): 236-244 (doi:10.9767/bcrec.13.2.1317.236-244)

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“…[30] Very recently,aresearch update was published summarizingt he literature experimentalr esults on the photocatalytic and photoelectrochemical behavior of ferrites. [43] Although ab asic photoelectrochemicals tudy has been describedf or the tetragonal phase of CuFe 2 O 4 [29] in the form of pellets, there is al ack of knowledge aboutt he fundamental photoelectrochemicalbehavior of this materialast hin-film electrodes. CuFe 2 O 4 has been reported not only as an anode in Li-ion batteries [36][37][38] but also as ap hotocatalyst,p articularly upon forming heterojunctions with TiO 2 , [29] WO 3 , [39] SnO 2 , [40] Bi 4 Ti 3 O 12 , [41] or C 3 N 4 [42] in applications such as degradation of organic compounds and H 2 production.…”

Section: Introductionmentioning

confidence: 99%

“…Recently,C uFe 2 O 4 /TiO 2 catalysts were also found to reduce CO 2 into methanolb yu sing visiblel ight. [43] Although ab asic photoelectrochemicals tudy has been describedf or the tetragonal phase of CuFe 2 O 4 [29] in the form of pellets, there is al ack of knowledge aboutt he fundamental photoelectrochemicalbehavior of this materialast hin-film electrodes.…”

Section: Introductionmentioning

confidence: 99%

Study of Copper Ferrite as a Novel Photocathode for Water Reduction: Improving Its Photoactivity by Electrochemical Pretreatment

2016

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Studies on water-splitting p-type oxide electrodes based on nontoxic earth-abundant elements are scarce. Herein, the behavior of electrodes composed of CuFe2 O4 nanoparticles 30 nm in size is presented. The as-prepared CuFe2 O4 nanoporous electrodes exhibit small anodic photocurrents in 0.1 m NaOH. However, an electrochemical pretreatment consisting in the application of sufficiently positive potentials leads to p-type behavior with a photocurrent onset as high as 1.1 V versus the reversible hydrogen electrode, which is among the most positive values reported for an oxide absorbing visible light (band gap of 2.1 eV). This photocurrent is partly due to H2 evolution, but there are also signs of photoreduction of the material. Although the photocurrents are modest, these results point to the possibility of using CuFe2 O4 as a photocathode material in water-splitting devices. Furthermore, the strategy employed for the enhancement in the CuFe2 O4 photoactivity could be extended to other photocathode materials.

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

Cited by 59 publications

References 32 publications

Synthesis of Titania Doped Copper Ferrite Photocatalyst and Its Photoactivity towards Methylene Blue Degradation under Visible Light Irradiation

Synthesis of Titania Doped Copper Ferrite Photocatalyst and Its Photoactivity towards Methylene Blue Degradation under Visible Light Irradiation

Electrochemical Study of Copper Ferrite as a Catalyst for CO2 Photoelectrochemical Reduction

Study of Copper Ferrite as a Novel Photocathode for Water Reduction: Improving Its Photoactivity by Electrochemical Pretreatment

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