Electrochemical Carbon Dioxide Reduction in Methanol at Cu and Cu2O-Deposited Carbon Black Electrodes

Uemoto, Naoki; Furukawa, Mai; Tateishi, Ikki; Katsumata, Hideyuki; Kaneco, Satoshi

doi:10.3390/chemengineering3010015

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Electrochemical Carbon Dioxide Reduction in Methanol at Cu and Cu₂O-Deposited Carbon Black Electrodes

by

Naoki Uemoto

^1,*,

Mai Furukawa

¹,

Ikki Tateishi

²

,

Hideyuki Katsumata

¹

and

Satoshi Kaneco

^1,2,*

¹

Department of Chemistry for Materials, Graduate School of Engineering, Mie University, Mie 514-8507, Japan

²

Global Environment Center for Education & Research, Mie University, Mie 514-8507, Japan

^*

Authors to whom correspondence should be addressed.

ChemEngineering 2019, 3(1), 15; https://doi.org/10.3390/chemengineering3010015

Submission received: 7 December 2018 / Revised: 29 January 2019 / Accepted: 1 February 2019 / Published: 8 February 2019

(This article belongs to the Special Issue Carbon-Based Materials and Their Electrochemical Applications)

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Abstract

The electrochemical reduction of carbon dioxide in methanol was investigated with Cu and Cu₂O-supported carbon black (Vulcan XC-72) nanoparticle electrodes. Herein, Cu or a Cu₂O-deposited carbon black catalyst has been synthesized by the reduction method for a Cu ion, and the drop-casting method was applied for the fabrication of a modified carbon black electrode. A catalyst ink solution was fabricated by dispersing the catalyst particles, and the catalyst ink was added onto the carbon plate. The pH of suspension was effective for controlling the Cu species for the metallic copper and the Cu₂O species deposited on the carbon black. Without the deposition of Cu, only CO and methyl formate were produced in the electrochemical CO₂ reduction, and the production of hydrocarbons could be scarcely observed. In contrast, hydrocarbons were formed by using Cu or Cu₂O-deposited carbon black electrodes. The maximum Faraday efficiency of hydrocarbons was 40.3% (26.9% of methane and 13.4% of ethylene) at −1.9 V on the Cu₂O-deposited carbon black catalyst. On the contrary, hydrogen evolution could be depressed to 34.7% under the condition.

Keywords: CO₂ electrochemical reduction; copper; carbon black; methanol; methane

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MDPI and ACS Style

Uemoto, N.; Furukawa, M.; Tateishi, I.; Katsumata, H.; Kaneco, S. Electrochemical Carbon Dioxide Reduction in Methanol at Cu and Cu₂O-Deposited Carbon Black Electrodes. ChemEngineering 2019, 3, 15. https://doi.org/10.3390/chemengineering3010015

AMA Style

Uemoto N, Furukawa M, Tateishi I, Katsumata H, Kaneco S. Electrochemical Carbon Dioxide Reduction in Methanol at Cu and Cu₂O-Deposited Carbon Black Electrodes. ChemEngineering. 2019; 3(1):15. https://doi.org/10.3390/chemengineering3010015

Chicago/Turabian Style

Uemoto, Naoki, Mai Furukawa, Ikki Tateishi, Hideyuki Katsumata, and Satoshi Kaneco. 2019. "Electrochemical Carbon Dioxide Reduction in Methanol at Cu and Cu₂O-Deposited Carbon Black Electrodes" ChemEngineering 3, no. 1: 15. https://doi.org/10.3390/chemengineering3010015

APA Style

Uemoto, N., Furukawa, M., Tateishi, I., Katsumata, H., & Kaneco, S. (2019). Electrochemical Carbon Dioxide Reduction in Methanol at Cu and Cu₂O-Deposited Carbon Black Electrodes. ChemEngineering, 3(1), 15. https://doi.org/10.3390/chemengineering3010015

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Electrochemical Carbon Dioxide Reduction in Methanol at Cu and Cu₂O-Deposited Carbon Black Electrodes

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