Proceedings of MATSUS Fall 2023 Conference (MATSUSFall23)
DOI: https://doi.org/10.29363/nanoge.matsus.2023.015
Publication date: 18th July 2023
Nanoparticle composites are widely used as catalysts in various chemical transformations. However, large-scale production of these materials is crucial for their practical implementation, and more efficient methods are needed. This presentation highlights recent advancements in the production of metal nanoparticles on carbon nanofibers through microwave heating. To achieve this, metal ions were deposited onto the carbon nanofiber surfaces using ethanol solutions, which were subsequently exposed to hexane, an antisolvent for metal ions. The carbon fibers were then rapidly and locally heated via Joule heating, resulting in the instantaneous formation of metal nanoparticles on the substrate surfaces in just a few seconds of microwave exposure, all in an ambient environment.
Furthermore, if nickel salt was used to produce nickel nanoparticles, carbon nanotubes (CNTs) were also produced on the carbon fibers during the process. This was due to several factors, including the vaporization of solvent residue that created a local environment for the reduction of metal salt, the decomposition of carbonaceous precursors on nanoparticle catalysts, and the fast cooling related to the condensation of hexane. We are exploring using the system to conver carbon dioxide to CNTs. Overall, this technique holds great promise for the scalable production of supported nanoparticle composites with potentially significant applications in the field of catalysis.
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