The Influence of Pore Size on the Photocatalytic and SERS Performance of Nanoporous Au-Ag Shells.

Authors

Wenpeng Yang, Wenguang Geng, Xiyuan Lu, Lihua Qian, Shijun Luo, Rui Zheng, Lei Xu, Dapeng Yang

Published in

Molecules (Basel, Switzerland). Volume 30. Issue 7. Mar 26, 2025. Epub Mar 26, 2025.

Abstract

Nanoporous metals have garnered significant attention in catalysis due to their unique three-dimensional interconnected network structure and pronounced localized surface plasmon resonance (LSPR) properties. In this study, nanoporous Au-Ag shells with varying pore sizes (8, 10, 12, and 18 nm) were synthesized, and their catalytic efficiencies were systematically evaluated. The conversion of p-nitrothiophenol (PNTP) to dimercapto-azobenzene (DMAB) was used to investigate the influence of pore size on the reaction kinetics and surface-enhanced Raman scattering (SERS) effects. Experimental results reveal that the nanoporous Au-Ag shells with a 12 nm pore size exhibit relatively high catalytic efficiency. Furthermore, tuning the pore size enables the modulation of LSPR in the near-infrared region. These findings highlight the critical role of pore size modulation in determining the photocatalytic performance of nanoporous metallic materials and provide valuable insights for the design and optimization of highly efficient photocatalysts.

PMID:
40286085
Bibliographic data and abstract were imported from PubMed on 27 Apr 2025.

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