Yang Wenpeng, Geng Wenguang, Lu Xiyuan, Qian Lihua, Luo Shijun, Zheng Rui, Xu Lei, Yang Dapeng
College of Electronics and Engineering, North China University of Water Resources and Electric Power, Zhengzhou 450046, China.
School of Physics, Huazhong University of Science and Technology, Wuhan 430074, China.
Molecules. 2025 Mar 26;30(7):1475. doi: 10.3390/molecules30071475.
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.
纳米多孔金属因其独特的三维互连网络结构和显著的局域表面等离子体共振（LSPR）特性而在催化领域备受关注。在本研究中，合成了具有不同孔径（8、10、12和18纳米）的纳米多孔金 - 银壳，并系统地评估了它们的催化效率。利用对硝基硫酚（PNTP）向二巯基偶氮苯（DMAB）的转化来研究孔径对反应动力学和表面增强拉曼散射（SERS）效应的影响。实验结果表明，孔径为12纳米的纳米多孔金 - 银壳表现出相对较高的催化效率。此外，调节孔径能够在近红外区域调制LSPR。这些发现突出了孔径调制在决定纳米多孔金属材料光催化性能方面的关键作用，并为高效光催化剂的设计和优化提供了有价值的见解。
