Pd-Nanoparticles Embedded Metal-Organic Framework-Derived Hierarchical Porous Carbon Nanosheets as Efficient Electrocatalysts for Carbon Monoxide Oxidation in Different Electrolytes
Author | Ipadeola, Adewale K. |
Author | Eid, Kamel |
Author | Abdullah, Aboubakr M. |
Author | Ozoemena, Kenneth I. |
Available date | 2023-01-08T08:27:18Z |
Publication Date | 2022 |
Publication Name | Langmuir |
Resource | Scopus |
Abstract | Rational synthesis of Co-ZIF-67 metal-organic framework (MOF)-derived carbon-supported metal nanoparticles is essential for various energy and environmental applications; however, their catalytic activity toward carbon monoxide (CO) oxidation in various electrolytes is not yet emphasized. Co-ZIF-67-derived hierarchical porous carbon nanosheet-supported Pd nanocrystals (Pd/ZIF-67/C) were prepared using a simple microwave-irradiation approach followed by carbonization and etching. Mechanistically, during microwave irradiation, triethyleneamine provides abundant reducing gases that promote the formation of Pd nanoparticles/Co-Nxin porous carbon nanosheets with the assistance of ethylene glycol and also form a multimodal pore size. The electrocatalytic CO oxidation activity and stability of Pd/ZIF-67/C outperformed those of commercial Pd/C and Pt/C catalysts by (4.2 and 4.4, 4.0 and 2.7, 3.59 and 2.7) times in 0.1 M HClO4, 0.1 M KOH, and 0.1 M NaHCO3, respectively, due to the catalytic properties of Pd besides the conductivity of Co-Nxactive sites and delicate porous structures of ZIF-67. Notably, using Pd/ZIF-67/C results in a higher CO oxidation activity than Pd/C and Pt/C. This study may pave the way for using MOF-supported multi-metallic nanoparticles for CO oxidation electrocatalysis. 2022 American Chemical Society. All rights reserved. |
Sponsor | This work was supported by the Qatar University Internal Grant (QUHI-CAM-22/23-550), Qatar National Research Fund (NPRP13S-0117-200095), and NRF/DSI/Wits SARChI Chair in Materials Electrochemistry and Energy Technologies (MEET) (UID No. 132739). The authors are grateful to the Environmental Science Center (ESC), Qatar University for the ICP-OES analysis. |
Language | en |
Publisher | American Chemical Society |
Subject | Carbon monoxide Carbonization Catalyst activity Catalytic oxidation Electrocatalysis Electrocatalysts Etching Ethylene Ethylene glycol Irradiation Metal nanoparticles Metal-Organic Frameworks Nanosheets Palladium Palladium compounds Platinum compounds Pore size Porous materials Potassium hydroxide Synthesis (chemical) Carbon monoxide oxidation Carbon nanosheets Derived carbons Embedded metals Hierarchical porous carbons Metalorganic frameworks (MOFs) Microwave- irradiations Oxidation activities Pd nanoparticles Rational synthesis Electrolytes |
Type | Article |
Pagination | 11109-11120 |
Issue Number | 36 |
Volume Number | 38 |
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