Visible light enhanced catalytic activity of Au subnanoclusters: the importance of d-sp interband transitions

Polymers can serve as an effective matrix to stabilize gold nanoparticles. These materials offer a continuous light-activated supply of subnanoclusters, which are composed of a few atoms. We report an efficient approach to enhance the catalytic activity of gold subnanoclusters by in situ feeding of...

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Published in:Chemical communications (Cambridge, England) England), 2024-08, Vol.6 (63), p.824-827
Main Authors: Sorroche, Alba, del-Campo, Irene, Casu, Alberto, Falqui, Andrea, Monge, Miguel, López-de-Luzuriaga, José M
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Summary:Polymers can serve as an effective matrix to stabilize gold nanoparticles. These materials offer a continuous light-activated supply of subnanoclusters, which are composed of a few atoms. We report an efficient approach to enhance the catalytic activity of gold subnanoclusters by in situ feeding of these species through the generation of hot carriers via 5d-6s6p interband transitions on PEG-stabilized Au nanoparticles. Experimental and DFT and TDDFT computational studies show that Au SNCs are formed and detached from a Au NP surface through a photochemical charge-carrier separation process driven by a d-sp interband transition mechanism.
ISSN:1359-7345
1364-548X
DOI:10.1039/d4cc02370f