2025 | "A Ni–N–C catalyst for CO2 electroreduction based on the MOF@MOF confi…
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작성자 관리자 / 작성일2024-12-13 / 조회434회첨부파일
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A Ni-N-C catalysts for CO2 electroreduction based on the MOF@MOF configuration exhibitng wide acive reaction sites.pdf
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DATE : 2024-12-13 23:36:30
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-Title : A Ni–N–C catalyst for CO2 electroreduction based on the MOF@MOF configuration exhibiting wide active reaction sites
Authors : Chul Hyun Jun, Chandan Chandru Gudal, Sampath Prabhakaran, Anki Reddy Mule, Pil J. Yoo*, Do Hwan Kim*, Chan-Hwa Chung*
- Inorganic Chemistry Frontiers
-DOI : doi.org/10.1039/D4QI02293A
Abstract
CO production, which is known for its efficient use of fewer electrons, has garnered significant attention owing to its potential applications in downstream industries. This study introduces a novel method for synthesizing the Ni–N–C structure with Ni, using a porous metal–organic framework (MOF) and a zeolitic imidazolate framework (ZIF), which is a type of material under MOFs, with the structural configuration of MOF@MOF. Decoupling the inner electron-transfer paths from the outer active sites makes it possible to obtain a high partial current for CO while minimizing the content of Ni. In addition, the pyrolyzed host MOF has superhydrophobic properties, making the inner space of Ni–N–C-748 a favorable environment for CO2 that prevents the hydrogen evolution reaction. Consequently, Ni–N–C-748 exhibited a faradaic efficiency for CO greater than 95% over a wide potential range. Furthermore, a potential of 2.1 V was obtained at 100 mA cm−2 using a membrane electrode assembly cell.
Authors : Chul Hyun Jun, Chandan Chandru Gudal, Sampath Prabhakaran, Anki Reddy Mule, Pil J. Yoo*, Do Hwan Kim*, Chan-Hwa Chung*
- Inorganic Chemistry Frontiers
-DOI : doi.org/10.1039/D4QI02293A
Abstract
CO production, which is known for its efficient use of fewer electrons, has garnered significant attention owing to its potential applications in downstream industries. This study introduces a novel method for synthesizing the Ni–N–C structure with Ni, using a porous metal–organic framework (MOF) and a zeolitic imidazolate framework (ZIF), which is a type of material under MOFs, with the structural configuration of MOF@MOF. Decoupling the inner electron-transfer paths from the outer active sites makes it possible to obtain a high partial current for CO while minimizing the content of Ni. In addition, the pyrolyzed host MOF has superhydrophobic properties, making the inner space of Ni–N–C-748 a favorable environment for CO2 that prevents the hydrogen evolution reaction. Consequently, Ni–N–C-748 exhibited a faradaic efficiency for CO greater than 95% over a wide potential range. Furthermore, a potential of 2.1 V was obtained at 100 mA cm−2 using a membrane electrode assembly cell.
