Pd-Nanoparticles Embedded Metal-Organic Framework-Derived Hierarchical Porous Carbon Nanosheets as Efficient Electrocatalysts for Carbon Monoxide Oxidation in Different Electrolytes
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.
Collections
- Center for Advanced Materials Research [1376 items ]
- GPC Research [499 items ]
Related items
Showing items related by title, author, creator and subject.
-
Carbon dioxide EGR and sequestration in mature and immature shale: Adsorption study
Mahmoud M.; Hamza A.; Hussein I.A.; Eliebid M.; Kamal M.S.; Abouelresh M.; Shawabkeh R.; Al-Marri M.J.... more authors ... less authors ( Elsevier B.V. , 2020 , Article)Recently, CO2 sequestration in different shale formations has become an attractive option owing to the abundance of shale basins. However, these formations have different maturity levels and contain a variety of minerals ... -
Highly ordered nanoporous carbon films with tunable pore diameters and their excellent sensing properties
Jia, L.; Lawrence, G.; Balasubramanian, V. V.; Choi, G.; Choy, J. H.; Abdullah, A. M.; Elzatahry, A.; Ariga, K.; Vinu, A... more authors ... less authors ( Wiley-VCH Verlag , 2015 , Article)Ordered porous carbon films with tunable pore diameters, immobilized with glucose oxidase (GOD) have been fabricated and employed for the construction of a biosensor for glucose molecules. The as-prepared porous films have ... -
Effects of soaking process on CH4-CO2 replacement efficiency for hydrate-bearing sediments
Ryou, Jae Eun; Al-Raoush, Riyadh I.; Alshibli, Khalid; Lee, Joo Yong; Jung, Jongwon ( Elsevier , 2021 , Article)CH4-CO2 replacement method has the advantages of sequestering carbon dioxide and sediment stability compared to other methods such as depressurization and thermal stimulation. However, the production efficiency using CH4-CO2 ...