Enhancement of the Catalytic Effect on the Electrochemical Conversion of CO 2 to Formic Acid Using MXene (Ti 3 C 2 T x )-Modified Boron-Doped Diamond Electrode

Prastika Krisma Jiwanti (), Asmaul Mashad Alfaza, Grandprix T. M. Kadja (), Suci A. C. Natalya, Fuja Sagita, Yasuaki Einaga, Aning Purwaningsih, Ilma Amalina and Intan Nurul Rizki
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Prastika Krisma Jiwanti: Nanotechnology Engineering, Faculty of Advanced Technology and Multidiscipline, Airlangga University, Surabaya 60115, Indonesia
Asmaul Mashad Alfaza: Department of Chemistry, Faculty of Science and Technology, Airlangga University, Surabaya 60115, Indonesia
Grandprix T. M. Kadja: Division of Inorganic and Physical Chemistry, Faculty of Mathematics and Natural Sciences, Institut Teknologi Bandung, Jl. Ganesha No. 10, Bandung 40132, Indonesia
Suci A. C. Natalya: Division of Inorganic and Physical Chemistry, Faculty of Mathematics and Natural Sciences, Institut Teknologi Bandung, Jl. Ganesha No. 10, Bandung 40132, Indonesia
Fuja Sagita: Division of Inorganic and Physical Chemistry, Faculty of Mathematics and Natural Sciences, Institut Teknologi Bandung, Jl. Ganesha No. 10, Bandung 40132, Indonesia
Yasuaki Einaga: Department of Chemistry, Keio University, 3-14-1 Hiyoshi, Yokohama 223-8522, Japan
Aning Purwaningsih: Department of Chemistry, Faculty of Science and Technology, Airlangga University, Surabaya 60115, Indonesia
Ilma Amalina: Nanotechnology Engineering, Faculty of Advanced Technology and Multidiscipline, Airlangga University, Surabaya 60115, Indonesia
Intan Nurul Rizki: Nanotechnology Engineering, Faculty of Advanced Technology and Multidiscipline, Airlangga University, Surabaya 60115, Indonesia

Energies, 2023, vol. 16, issue 12, 1-11

Abstract: The rising concentration of carbon dioxide (CO 2 ) as one of the greenhouse gases in the atmosphere is a major source of worry. Electrochemical reduction of CO 2 is one of many ways to convert CO 2 gas into usable compounds. An electrochemical technique was applied in this study to reduce CO 2 using a boron-doped diamond (BDD) working electrode modified with MXene (Ti 3 C 2 T x ) material to improve electrode performance. MXene concentrations of 0.5 mg/mL (MXene-BDD 0.5), 1.0 mg/mL (MXene-BDD 1.0), and 2.0 mg/mL (MXene-BDD 2.0) were drop-casted onto the BDD surface. MXene was effectively deposited on top of the BDD surface, with Ti weight loads of 0.12%, 4.06%, and 7.14% on MXene-BDD 0.5, MXene-BDD 1.0, and MXene-BDD 2.0, respectively. The modified working electrode was employed for CO 2 electroreduction with optimal CO 2 gas aeration. The existence of the MXene substance in BDD reduced the electroreduction overpotential of CO 2 . For the final result, we found that the MXene-BDD 2.0 electrode effectively generated the most formic acid product with a maximum reduction potential as low as −1.3 V (vs. Ag/AgCl).

Keywords: MXene; boron-doped diamond; CO 2 reduction; climate action (search for similar items in EconPapers)
JEL-codes: Q Q0 Q4 Q40 Q41 Q42 Q43 Q47 Q48 Q49 (search for similar items in EconPapers)
Date: 2023
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