Mesoporous Nitrogen-Doped Carbon Support from ZIF-8 for Pt Catalysts in Oxygen Reduction Reaction
Zeolitic imidazolate framework-8 (ZIF-8) has been extensively studied as a precursor for nitrogen-doped carbon (NC) materials due to its high surface area, tunable porosity, and adjustable nitrogen content. However, the intrinsic microporous structure of the ZIF-8 limits mass transport and accessibi...
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2025-01-01
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| Series: | Nanomaterials |
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| Online Access: | https://www.mdpi.com/2079-4991/15/2/128 |
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| author | Sangyeup Park Jong Gyeong Kim Youngin Cho Chanho Pak |
| author_facet | Sangyeup Park Jong Gyeong Kim Youngin Cho Chanho Pak |
| author_sort | Sangyeup Park |
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| description | Zeolitic imidazolate framework-8 (ZIF-8) has been extensively studied as a precursor for nitrogen-doped carbon (NC) materials due to its high surface area, tunable porosity, and adjustable nitrogen content. However, the intrinsic microporous structure of the ZIF-8 limits mass transport and accessibility of reactants to active sites, reducing its effectiveness in electrochemical applications. In this study, a soft templating approach using a triblock copolymer was used to prepare mesoporous ZIF-8-derived NC (Meso-ZIF-NC) samples. The hierarchical porous structure was investigated by varying the ratios of Pluronic F-127, NaClO<sub>4</sub>, and toluene. The resulting Meso-ZIF-NC exhibited widespread pore size distribution with an enhanced mesopore (2–50 nm) volume according to the composition of the reaction mixtures. Pt nanoparticles were uniformly dispersed on the Meso-ZIF-NC to form Pt/Meso-ZIF-NC catalysts, which presented a high electrochemical surface area and improved oxygen reduction reaction activity. The study highlights the important role of mesopore structure and nitrogen doping in enhancing catalytic performance, providing a pathway for advanced fuel cell catalyst design. |
| format | Article |
| id | doaj-art-335fb748c6864b278264f681d70badbf |
| institution | Kabale University |
| issn | 2079-4991 |
| language | English |
| publishDate | 2025-01-01 |
| publisher | MDPI AG |
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| series | Nanomaterials |
| spelling | doaj-art-335fb748c6864b278264f681d70badbf2025-01-24T13:44:14ZengMDPI AGNanomaterials2079-49912025-01-0115212810.3390/nano15020128Mesoporous Nitrogen-Doped Carbon Support from ZIF-8 for Pt Catalysts in Oxygen Reduction ReactionSangyeup Park0Jong Gyeong Kim1Youngin Cho2Chanho Pak3Graduate School of Energy Convergence, Institute of Integrated Technology, Gwangju Institute of Science and Technology, Gwangju 61005, Republic of KoreaGraduate School of Energy Convergence, Institute of Integrated Technology, Gwangju Institute of Science and Technology, Gwangju 61005, Republic of KoreaGraduate School of Energy Convergence, Institute of Integrated Technology, Gwangju Institute of Science and Technology, Gwangju 61005, Republic of KoreaGraduate School of Energy Convergence, Institute of Integrated Technology, Gwangju Institute of Science and Technology, Gwangju 61005, Republic of KoreaZeolitic imidazolate framework-8 (ZIF-8) has been extensively studied as a precursor for nitrogen-doped carbon (NC) materials due to its high surface area, tunable porosity, and adjustable nitrogen content. However, the intrinsic microporous structure of the ZIF-8 limits mass transport and accessibility of reactants to active sites, reducing its effectiveness in electrochemical applications. In this study, a soft templating approach using a triblock copolymer was used to prepare mesoporous ZIF-8-derived NC (Meso-ZIF-NC) samples. The hierarchical porous structure was investigated by varying the ratios of Pluronic F-127, NaClO<sub>4</sub>, and toluene. The resulting Meso-ZIF-NC exhibited widespread pore size distribution with an enhanced mesopore (2–50 nm) volume according to the composition of the reaction mixtures. Pt nanoparticles were uniformly dispersed on the Meso-ZIF-NC to form Pt/Meso-ZIF-NC catalysts, which presented a high electrochemical surface area and improved oxygen reduction reaction activity. The study highlights the important role of mesopore structure and nitrogen doping in enhancing catalytic performance, providing a pathway for advanced fuel cell catalyst design.https://www.mdpi.com/2079-4991/15/2/128zeolite imidazolate frameworknitrogen-doped carbonoxygen reduction reactionsupported catalystmesoporous structure |
| spellingShingle | Sangyeup Park Jong Gyeong Kim Youngin Cho Chanho Pak Mesoporous Nitrogen-Doped Carbon Support from ZIF-8 for Pt Catalysts in Oxygen Reduction Reaction Nanomaterials zeolite imidazolate framework nitrogen-doped carbon oxygen reduction reaction supported catalyst mesoporous structure |
| title | Mesoporous Nitrogen-Doped Carbon Support from ZIF-8 for Pt Catalysts in Oxygen Reduction Reaction |
| title_full | Mesoporous Nitrogen-Doped Carbon Support from ZIF-8 for Pt Catalysts in Oxygen Reduction Reaction |
| title_fullStr | Mesoporous Nitrogen-Doped Carbon Support from ZIF-8 for Pt Catalysts in Oxygen Reduction Reaction |
| title_full_unstemmed | Mesoporous Nitrogen-Doped Carbon Support from ZIF-8 for Pt Catalysts in Oxygen Reduction Reaction |
| title_short | Mesoporous Nitrogen-Doped Carbon Support from ZIF-8 for Pt Catalysts in Oxygen Reduction Reaction |
| title_sort | mesoporous nitrogen doped carbon support from zif 8 for pt catalysts in oxygen reduction reaction |
| topic | zeolite imidazolate framework nitrogen-doped carbon oxygen reduction reaction supported catalyst mesoporous structure |
| url | https://www.mdpi.com/2079-4991/15/2/128 |
| work_keys_str_mv | AT sangyeuppark mesoporousnitrogendopedcarbonsupportfromzif8forptcatalystsinoxygenreductionreaction AT jonggyeongkim mesoporousnitrogendopedcarbonsupportfromzif8forptcatalystsinoxygenreductionreaction AT youngincho mesoporousnitrogendopedcarbonsupportfromzif8forptcatalystsinoxygenreductionreaction AT chanhopak mesoporousnitrogendopedcarbonsupportfromzif8forptcatalystsinoxygenreductionreaction |