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Achieving tolerant CO_2 electro-reduction catalyst in real water matrix

Won, Da Hye and Shin, Hyeyoung and Chung, Min Wook and Jung, Hyejin and Chae, Keun Hwa and Oh, Hyung-Suk and Hwang, Yun Jeong and Min, Byoung Koun (2019) Achieving tolerant CO_2 electro-reduction catalyst in real water matrix. Applied Catalysis B, 258 . Art. No. 117961. ISSN 0926-3373. http://resolver.caltech.edu/CaltechAUTHORS:20190722-092846296

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Abstract

In order to achieve practical application of electrochemical CO_2 conversion technologies, the development of durable catalyst in real water matrix is essential because the use of catalysts only showing high performance within a well-refined environment cannot guarantee their feasibility in realistic conditions. Here, we report a design strategy for a catalyst, which shows excellent tolerance to deactivation factors, using a carbon-based material under more practical condition implemented by real tap water. Screening analyses on various components in tap water elucidated that the impurity group, which can be deposited on the catalyst surface and impede the active sites, such as copper, zinc, and especially iron are the main factors responsible for deactivation. Based on these findings, the structural modified nitrogen-doped carbon nanotube (denoted as ball mill N-CNT) was adopted as a catalyst design to secure durability. Consequently, the ball mill N-CNT revealed tolerance to the disclosed deactivation factors and showed stable performance during unprecedented long-time of 120 h in tap water media.


Item Type:Article
Related URLs:
URLURL TypeDescription
https://doi.org/10.1016/j.apcatb.2019.117961DOIArticle
ORCID:
AuthorORCID
Shin, Hyeyoung0000-0001-6694-7895
Chae, Keun Hwa0000-0003-3894-670X
Oh, Hyung-Suk0000-0002-0310-6666
Hwang, Yun Jeong0000-0002-0980-1758
Min, Byoung Koun0000-0001-5766-0251
Alternate Title:Achieving tolerant CO2 electro-reduction catalyst in real water matrix
Additional Information:© 2019 Elsevier B.V. Received 17 December 2018, Revised 11 July 2019, Accepted 12 July 2019, Available online 22 July 2019. This work was supported by the program of the Korea Institute of Science and Technology (KIST) and partially by “Next Generation Carbon Upcycling Project” (Project No. 2017M1A2A2046713) through the National Research Foundation (NRF) funded by the Korean government.
Funders:
Funding AgencyGrant Number
Korea Institute of Science and Technology (KIST)UNSPECIFIED
National Research Foundation of Korea2017M1A2A2046713
Subject Keywords:Carbon dioxide; Carbon monoxide; Carbon material; Electrocatalyst; Tap water
Record Number:CaltechAUTHORS:20190722-092846296
Persistent URL:http://resolver.caltech.edu/CaltechAUTHORS:20190722-092846296
Official Citation:Da Hye Won, Hyeyoung Shin, Min Wook Chung, Hyejin Jung, Keun Hwa Chae, Hyung-Suk Oh, Yun Jeong Hwang, Byoung Koun Min, Achieving tolerant CO2 electro-reduction catalyst in real water matrix, Applied Catalysis B: Environmental, Volume 258, 2019, 117961, ISSN 0926-3373, https://doi.org/10.1016/j.apcatb.2019.117961. (http://www.sciencedirect.com/science/article/pii/S0926337319307076)
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:97313
Collection:CaltechAUTHORS
Deposited By: Tony Diaz
Deposited On:22 Jul 2019 16:56
Last Modified:06 Aug 2019 18:11

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