Electro-assisted methane oxidation to formic acid via in-situ cathodically generated H2O2 under ambient conditionsopen access
- Authors
- Kim, J.[Kim, Jiwon]; Kim, J.H.[Kim, Jae Hyung]; Oh, C.[Oh, Cheoulwoo]; Yun, H.[Yun, Hyewon]; Lee, E.[Lee, Eunchong]; Oh, H.-S.[Oh, Hyung-Suk]; Park, J.H.[Park, Jong Hyeok]; Hwang, Y.J.[Hwang, Yun Jeong]
- Issue Date
- 5-Aug-2023
- Publisher
- Nature Research
- Citation
- Nature Communications, v.14, no.1
- Indexed
- SCIE
SCOPUS
- Journal Title
- Nature Communications
- Volume
- 14
- Number
- 1
- URI
- https://scholarworks.bwise.kr/skku/handle/2021.sw.skku/107578
- DOI
- 10.1038/s41467-023-40415-6
- ISSN
- 2041-1723
- Abstract
- Direct partial oxidation of methane to liquid oxygenates has been regarded as a potential route to valorize methane. However, CH4 activation usually requires a high temperature and pressure, which lowers the feasibility of the reaction. Here, we propose an electro-assisted approach for the partial oxidation of methane, using in-situ cathodically generated reactive oxygen species, at ambient temperature and pressure. Upon using acid-treated carbon as the electrocatalyst, the electro-assisted system enables the partial oxidation of methane in an acidic electrolyte to produce oxygenated liquid products. We also demonstrate a high production rate of oxygenates (18.9 μmol h−1) with selective HCOOH production. Mechanistic analysis reveals that reactive oxygen species such as ∙OH and ∙OOH radicals are produced and activate CH4 and CH3OH. In addition, unstable CH3OOH generated from methane partial oxidation can be additionally reduced to CH3OH on the cathode, and so-produced CH3OH is further oxidized to HCOOH, allowing selective methane partial oxidation. © 2023, Springer Nature Limited.
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Collections - Engineering > School of Advanced Materials Science and Engineering > 1. Journal Articles
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