Metal-organic-frameworks passivated CuBi2O4 photocathodes boost CO2 reduction kinetics
Photoelectrochemical reduction of CO2 to produce CO with metal-organic frameworks (MOFs) is recognized as a desirable technology to mitigate CO2 emission and generate sustainable energy. To achieve highly efficient electrocatalyst, it is essential to design a new material interface and uncover new r...
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Format: | Article |
Language: | English |
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KeAi Communications Co. Ltd.
2023-11-01
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Series: | Materials Reports: Energy |
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Online Access: | http://www.sciencedirect.com/science/article/pii/S2666935823000873 |
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author | Jiaqi Jin Guangming Cao Yanjie Liu Yingying Shu Zhiyuan Deng Wei Sun Xiaogang Yang |
author_facet | Jiaqi Jin Guangming Cao Yanjie Liu Yingying Shu Zhiyuan Deng Wei Sun Xiaogang Yang |
author_sort | Jiaqi Jin |
collection | DOAJ |
description | Photoelectrochemical reduction of CO2 to produce CO with metal-organic frameworks (MOFs) is recognized as a desirable technology to mitigate CO2 emission and generate sustainable energy. To achieve highly efficient electrocatalyst, it is essential to design a new material interface and uncover new reaction mechanisms or kinetics. Herein, we developed two metal-organic Cu-MOF and Bi-MOF layers using benzene tricarboxylic acid (H3BTC) ligands on CuBi2O4 photocathodes. Both MOF layers drastically improved the photoelectrochemical stability by suppressing the photo-corrosion through conformal surface passivation. The Cu-MOF modified CuBi2O4 showed more significant charge separation and transfer efficiencies than the Bi-MOF modified control. Based on the transient photocurrent curves under the applied potential of 0.6 V vs. RHE, the rate-law analysis showed the CO2 photoreduction took place through a first-order reaction. Further, the photoelectrochemical impedance spectra (PEIS) revealed this reaction order, representing an “operando” analysis. Moreover, the reaction rate constant on Cu-MOF modified sample was higher than that on Bi-MOF modified one and bare CuBi2O4. Combined with the density functional theory calculation, the surface absorption of CO2 and CO molecules and the higher energy barrier for ∗COOH intermediates could significantly determine the first order reaction. |
first_indexed | 2024-03-09T15:35:11Z |
format | Article |
id | doaj.art-89e697c4b8f54bd5bacab9191e8adb2e |
institution | Directory Open Access Journal |
issn | 2666-9358 |
language | English |
last_indexed | 2024-03-09T15:35:11Z |
publishDate | 2023-11-01 |
publisher | KeAi Communications Co. Ltd. |
record_format | Article |
series | Materials Reports: Energy |
spelling | doaj.art-89e697c4b8f54bd5bacab9191e8adb2e2023-11-26T05:14:14ZengKeAi Communications Co. Ltd.Materials Reports: Energy2666-93582023-11-0134100229Metal-organic-frameworks passivated CuBi2O4 photocathodes boost CO2 reduction kineticsJiaqi Jin0Guangming Cao1Yanjie Liu2Yingying Shu3Zhiyuan Deng4Wei Sun5Xiaogang Yang6Institute of Materials Science and Devices, School of Material Science and Engineering, Suzhou University of Science and Technology, Suzhou, 215009, PR China; School of Computing and Artificial Intelligence, Southwest Jiaotong University, Chengdu, 611756, PR ChinaInstitute of Materials Science and Devices, School of Material Science and Engineering, Suzhou University of Science and Technology, Suzhou, 215009, PR ChinaInstitute of Materials Science and Devices, School of Material Science and Engineering, Suzhou University of Science and Technology, Suzhou, 215009, PR ChinaInstitute of Materials Science and Devices, School of Material Science and Engineering, Suzhou University of Science and Technology, Suzhou, 215009, PR ChinaInstitute of Materials Science and Devices, School of Material Science and Engineering, Suzhou University of Science and Technology, Suzhou, 215009, PR ChinaKey Laboratory of Laser Technology and Optoelectronic Functional Materials of Hainan Province, Key Laboratory of Functional Materials and Photoelectrochemistry of Haikou, College of Chemistry and Chemical Engineering, Hainan Normal University, Haikou, 571158, PR ChinaInstitute of Materials Science and Devices, School of Material Science and Engineering, Suzhou University of Science and Technology, Suzhou, 215009, PR China; Corresponding author.Photoelectrochemical reduction of CO2 to produce CO with metal-organic frameworks (MOFs) is recognized as a desirable technology to mitigate CO2 emission and generate sustainable energy. To achieve highly efficient electrocatalyst, it is essential to design a new material interface and uncover new reaction mechanisms or kinetics. Herein, we developed two metal-organic Cu-MOF and Bi-MOF layers using benzene tricarboxylic acid (H3BTC) ligands on CuBi2O4 photocathodes. Both MOF layers drastically improved the photoelectrochemical stability by suppressing the photo-corrosion through conformal surface passivation. The Cu-MOF modified CuBi2O4 showed more significant charge separation and transfer efficiencies than the Bi-MOF modified control. Based on the transient photocurrent curves under the applied potential of 0.6 V vs. RHE, the rate-law analysis showed the CO2 photoreduction took place through a first-order reaction. Further, the photoelectrochemical impedance spectra (PEIS) revealed this reaction order, representing an “operando” analysis. Moreover, the reaction rate constant on Cu-MOF modified sample was higher than that on Bi-MOF modified one and bare CuBi2O4. Combined with the density functional theory calculation, the surface absorption of CO2 and CO molecules and the higher energy barrier for ∗COOH intermediates could significantly determine the first order reaction.http://www.sciencedirect.com/science/article/pii/S2666935823000873Copper bismuth oxideCarbon dioxide photoelectrochemical reductionMetal-organic frameworkRate-law kinetics |
spellingShingle | Jiaqi Jin Guangming Cao Yanjie Liu Yingying Shu Zhiyuan Deng Wei Sun Xiaogang Yang Metal-organic-frameworks passivated CuBi2O4 photocathodes boost CO2 reduction kinetics Materials Reports: Energy Copper bismuth oxide Carbon dioxide photoelectrochemical reduction Metal-organic framework Rate-law kinetics |
title | Metal-organic-frameworks passivated CuBi2O4 photocathodes boost CO2 reduction kinetics |
title_full | Metal-organic-frameworks passivated CuBi2O4 photocathodes boost CO2 reduction kinetics |
title_fullStr | Metal-organic-frameworks passivated CuBi2O4 photocathodes boost CO2 reduction kinetics |
title_full_unstemmed | Metal-organic-frameworks passivated CuBi2O4 photocathodes boost CO2 reduction kinetics |
title_short | Metal-organic-frameworks passivated CuBi2O4 photocathodes boost CO2 reduction kinetics |
title_sort | metal organic frameworks passivated cubi2o4 photocathodes boost co2 reduction kinetics |
topic | Copper bismuth oxide Carbon dioxide photoelectrochemical reduction Metal-organic framework Rate-law kinetics |
url | http://www.sciencedirect.com/science/article/pii/S2666935823000873 |
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