September 16, 2025

Confined Assembly of Well-Defined Single-Unit Chain with Charge Delocalization for Boosting Catalysis.

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Fabrication of single-atom catalysts within SWCNTs enhances catalytic performance, suggesting broad applications.

Charge delocalization dramatically increases catalytic performance by enhancing active site density and lowering activation barriers.
Rate constants for the new catalysts are observed to be 7.5 to 28 times higher than those of isolated clusters, showcasing superior activity.
The method uses a liquid-phase assembly to uniformly pack catalysts into single-unit chains within SWCNTs, regardless of their solubility.
These single-unit chain catalysts exhibit remarkable stability, maintaining high activity in continuous-flow reactions for 230 hours.

Yu et al. (2025) studied this question.

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