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Thursday, January 30, 2025

Creating nanoislands enhances platinum catalyst effectivity


Creating nanoislands for better platinum catalysts
Platinum is a helpful as a catalyst for industrial chemistry. UC Davis researchers have developed a brand new approach to lure clusters of some platinum atoms (white arrow on proper) in nanometer-scale islands of cerium oxide (yellow circle) on a silica floor. The tactic could possibly be used to supply extra environment friendly and strong catalysts. Credit score: Yizhen Chen, UC Davis

Noble metals similar to platinum could make helpful catalysts to speed up chemical reactions, significantly hydrogenation (including hydrogen atoms to a molecule). A analysis staff led by Professor Bruce Gates on the UC Davis Division of Chemical Engineering is inquisitive about making platinum catalysts which might be extremely environment friendly and secure throughout chemical reactions.

The staff’s work is described in a paper printed in Nature Chemical Engineering and in an accompanying analysis temporary.

Earlier work has proven that organized in clusters of some atoms on a floor makes a greater hydrogenation catalyst than both single platinum atoms, or bigger nanoparticles of platinum. Sadly, such small clusters are likely to clump simply into bigger particles, shedding effectivity.

Yizhen Chen, then a postdoctoral scholar within the Gates Catalysis Analysis Group, picked up on an concept by Jingyue Liu, now at Arizona State College, to “lure” platinum clusters on a tiny island of cerium oxide supported on a silica floor. Every island turns into its personal chemical reactor.

Chen, Gates and colleagues had been in a position to present that they may produce these clusters, that they confirmed good catalytic exercise in of ethylene, and that they had been secure underneath extreme response circumstances.

These confined steel clusters may present a brand new route to supply secure catalysts for the chemical business.

Extra info:
Paper: Yizhen Chen et al, Stabilizing supported atom-precise low-nuclearity platinum cluster catalysts by nanoscale confinement, Nature Chemical Engineering (2025). DOI: 10.1038/s44286-024-00162-x

Analysis Temporary: Nanoscale confinement technique for the stabilization of few-atom platinum cluster catalysts, Nature Chemical Engineering (2025). DOI: 10.1038/s44286-025-00173-2

Quotation:
Creating nanoislands enhances platinum catalyst effectivity (2025, January 29)
retrieved 30 January 2025
from https://phys.org/information/2025-01-nanoislands-platinum-catalyst-efficiency.html

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