Dual-functional paired photoelectrocatalytic system for the photocathodic reduction of CO2 to fuels and the anodic oxidation of furfural to value-added chemicals

G. Bharath; K. Rambabu; Abdul Hai; N. Ponpandian; Jens Ejbye Schmidt; Dionysios D. Dionysiou; Mohammad Abu Haija; Fawzi Banat

doi:10.1016/j.apcatb.2021.120520

Dual-functional paired photoelectrocatalytic system for the photocathodic reduction of CO₂ to fuels and the anodic oxidation of furfural to value-added chemicals

G. Bharath, K. Rambabu, Abdul Hai, N. Ponpandian, Jens Ejbye Schmidt, Dionysios D. Dionysiou, Mohammad Abu Haija, Fawzi Banat

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

45 Scopus citations

Abstract

The global warming and energy requirement have accentuated the need to convert atmospheric CO₂ into fuels through a highly efficient photoelectrochemical cell (PEC) process. Typically, CO₂ reduction at the cathode is accompanied by water oxidation at the anode to produce O₂, which is not of significant value. Herein, we report the design of paired PEC to reduce CO₂ to CH₃OH and the oxidation of furfural (FF) to 2-furoic acid (2-FA) and 5-hydroxyfuroic acid (5-HFA). The paired PEC electrolyzer was constructed with Au/α-Fe₂O₃/RGO and Ru/RGO/Pt based asymmetric electrodes. The photocathode-driven PEC CO₂ conversion test showed a high CH₃OH yield of 63 μmol L⁻¹ cm⁻² at 21.5 % quantum efficiency with a Faradaic efficiency of 91 % at -0.6 V under visible light. The anodic furfural oxidation test demonstrated a higher FF conversion (82 %) with higher yields of 2-FA and 5-HFA. This study showed the potential of the paired PEC process to produce valuable products at both electrodes.

Original language	British English
Article number	120520
Journal	Applied Catalysis B: Environmental
Volume	298
DOIs	https://doi.org/10.1016/j.apcatb.2021.120520
State	Published - 5 Dec 2021

Keywords

Electro-oxidation of furfural
Methanol
Photocathode
Photoelectrocatalytic CO reduction
Sustainable liquid fuel production

UN SDGs

This output contributes to the following UN Sustainable Development Goals (SDGs)

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10.1016/j.apcatb.2021.120520

Cite this

Bharath, G., Rambabu, K., Hai, A., Ponpandian, N., Schmidt, J. E., Dionysiou, D. D., Abu Haija, M., & Banat, F. (2021). Dual-functional paired photoelectrocatalytic system for the photocathodic reduction of CO₂ to fuels and the anodic oxidation of furfural to value-added chemicals. Applied Catalysis B: Environmental, 298, Article 120520. https://doi.org/10.1016/j.apcatb.2021.120520

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title = "Dual-functional paired photoelectrocatalytic system for the photocathodic reduction of CO2 to fuels and the anodic oxidation of furfural to value-added chemicals",

abstract = "The global warming and energy requirement have accentuated the need to convert atmospheric CO2 into fuels through a highly efficient photoelectrochemical cell (PEC) process. Typically, CO2 reduction at the cathode is accompanied by water oxidation at the anode to produce O2, which is not of significant value. Herein, we report the design of paired PEC to reduce CO2 to CH3OH and the oxidation of furfural (FF) to 2-furoic acid (2-FA) and 5-hydroxyfuroic acid (5-HFA). The paired PEC electrolyzer was constructed with Au/α-Fe2O3/RGO and Ru/RGO/Pt based asymmetric electrodes. The photocathode-driven PEC CO2 conversion test showed a high CH3OH yield of 63 μmol L−1 cm−2 at 21.5 % quantum efficiency with a Faradaic efficiency of 91 % at -0.6 V under visible light. The anodic furfural oxidation test demonstrated a higher FF conversion (82 %) with higher yields of 2-FA and 5-HFA. This study showed the potential of the paired PEC process to produce valuable products at both electrodes.",

keywords = "Electro-oxidation of furfural, Methanol, Photocathode, Photoelectrocatalytic CO reduction, Sustainable liquid fuel production",

author = "G. Bharath and K. Rambabu and Abdul Hai and N. Ponpandian and Schmidt, {Jens Ejbye} and Dionysiou, {Dionysios D.} and {Abu Haija}, Mohammad and Fawzi Banat",

note = "Funding Information: We would like to thank the Khalifa University of Science and Technology, Abu Dhabi , for supporting this study through an internal grant CIRA-2018-27 and CIRA-2020-085 . D. D. Dionysiou also acknowledges support from the University of Cincinnati through the Herman Schneider Professorship in the College of Engineering and Applied Sciences. Publisher Copyright: {\textcopyright} 2021 Elsevier B.V.",

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AU - Rambabu, K.

AU - Hai, Abdul

AU - Ponpandian, N.

AU - Schmidt, Jens Ejbye

AU - Dionysiou, Dionysios D.

AU - Abu Haija, Mohammad

AU - Banat, Fawzi

N1 - Funding Information: We would like to thank the Khalifa University of Science and Technology, Abu Dhabi , for supporting this study through an internal grant CIRA-2018-27 and CIRA-2020-085 . D. D. Dionysiou also acknowledges support from the University of Cincinnati through the Herman Schneider Professorship in the College of Engineering and Applied Sciences. Publisher Copyright: © 2021 Elsevier B.V.

PY - 2021/12/5

Y1 - 2021/12/5

N2 - The global warming and energy requirement have accentuated the need to convert atmospheric CO2 into fuels through a highly efficient photoelectrochemical cell (PEC) process. Typically, CO2 reduction at the cathode is accompanied by water oxidation at the anode to produce O2, which is not of significant value. Herein, we report the design of paired PEC to reduce CO2 to CH3OH and the oxidation of furfural (FF) to 2-furoic acid (2-FA) and 5-hydroxyfuroic acid (5-HFA). The paired PEC electrolyzer was constructed with Au/α-Fe2O3/RGO and Ru/RGO/Pt based asymmetric electrodes. The photocathode-driven PEC CO2 conversion test showed a high CH3OH yield of 63 μmol L−1 cm−2 at 21.5 % quantum efficiency with a Faradaic efficiency of 91 % at -0.6 V under visible light. The anodic furfural oxidation test demonstrated a higher FF conversion (82 %) with higher yields of 2-FA and 5-HFA. This study showed the potential of the paired PEC process to produce valuable products at both electrodes.

AB - The global warming and energy requirement have accentuated the need to convert atmospheric CO2 into fuels through a highly efficient photoelectrochemical cell (PEC) process. Typically, CO2 reduction at the cathode is accompanied by water oxidation at the anode to produce O2, which is not of significant value. Herein, we report the design of paired PEC to reduce CO2 to CH3OH and the oxidation of furfural (FF) to 2-furoic acid (2-FA) and 5-hydroxyfuroic acid (5-HFA). The paired PEC electrolyzer was constructed with Au/α-Fe2O3/RGO and Ru/RGO/Pt based asymmetric electrodes. The photocathode-driven PEC CO2 conversion test showed a high CH3OH yield of 63 μmol L−1 cm−2 at 21.5 % quantum efficiency with a Faradaic efficiency of 91 % at -0.6 V under visible light. The anodic furfural oxidation test demonstrated a higher FF conversion (82 %) with higher yields of 2-FA and 5-HFA. This study showed the potential of the paired PEC process to produce valuable products at both electrodes.

KW - Electro-oxidation of furfural

KW - Methanol

KW - Photocathode

KW - Photoelectrocatalytic CO reduction

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