Karim, Kaykobad Md Rezaul and Huei, Ruey Ong and Hamidah, Abdullah and Yousuf, Abu and Cheng, C. K. and Khan, Maksudur R. (2018) Electrochemical study of copper ferrite as a catalyst for CO2 photoelectrochemical reduction. Bulletin of Chemical Reaction Engineering & Catalysis, 13 (2). pp. 236-244. ISSN 1978-2993. (Published)
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Electrochemical study of copper ferrite as a catalyst for CO2 Photoelectrochemical reduction.pdf Available under License Creative Commons Attribution Share Alike. Download (1MB) | Preview |
Abstract
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.
| Item Type: | Article |
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| Additional Information: | Indexed by Scopus |
| Uncontrolled Keywords: | CuFe2O4; CO2 reduction; Onset potential; Photoelectrochemical reduction; Linear sweep voltammetry |
| Subjects: | T Technology > T Technology (General) T Technology > TP Chemical technology |
| Faculty/Division: | Faculty of Chemical & Natural Resources Engineering Faculty of Engineering Technology |
| Depositing User: | Mrs. Neng Sury Sulaiman |
| Date Deposited: | 30 Aug 2018 04:03 |
| Last Modified: | 30 Aug 2018 04:03 |
| URI: | http://umpir.ump.edu.my/id/eprint/21347 |
| Download Statistic: | View Download Statistics |
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