Zhu Liyang, Kang Yunqing, Eguchi Miharu, Zhao Yingji, Jiang Dong, Wei Xiaoqian, Xu Xingtao, Nakagawa Kenta, Asahi Toru, Yokoshima Tokihiko, Yamauchi Yusuke
Department of Nanoscience and Nanoengineering, Department of Applied Chemistry, and Department of Life Science and Medical Bioscience, Graduate School of Advanced Science and Engineering, Waseda University Tokyo 169-8555 Japan
Department of Materials Process Engineering, Graduate School of Engineering, Nagoya University Aichi 464-8603 Japan
Chem Sci. 2025 Apr 9;16(19):8309-8318. doi: 10.1039/d4sc07345b. eCollection 2025 May 14.
Trimetallic systems have garnered considerable attention in (electro)catalysis due to the synergistic effects resulting from the combination of three different metals. However, achieving precise control over the positioning of various metals and understanding the relationship between structure and performance remains challenging. This study introduces an approach for synthesizing Pd@Pt@Au mesoporous nanoparticles (MNPs) with distinct core-shell Pd@Pt structures, featuring well-dispersed isolated Au islands on the outer shell, improving the plasmonic effect. The electrocatalytic performance of Pd@Pt@Au MNPs in the methanol oxidation reaction (MOR) is assessed under light-induced and light-independent conditions. The results indicate significantly enhanced activity compared to commercial Pt black, with catalytic activity during MOR increasing approximately 7.5-fold under light irradiation. The external placement of Au on the shell of Pd@Pt@Au MNPs provides superior plasmonic enhancement, thereby contributing to improved catalytic performance under light irradiation. This investigation sheds light on the controlled synthesis of trimetallic MNPs and their catalytic applications, underscoring the importance of precise Au positioning for optimizing performance.
由于三种不同金属组合产生的协同效应，三金属体系在（电）催化领域引起了广泛关注。然而，实现对各种金属位置的精确控制以及理解结构与性能之间的关系仍然具有挑战性。本研究介绍了一种合成具有独特核壳结构Pd@Pt的Pd@Pt@Au介孔纳米颗粒（MNP）的方法，其外壳上有分散良好的孤立金岛，增强了等离子体效应。在光诱导和无光条件下评估了Pd@Pt@Au MNP在甲醇氧化反应（MOR）中的电催化性能。结果表明，与商业铂黑相比，其活性显著增强，在光照下MOR期间的催化活性增加了约7.5倍。Pd@Pt@Au MNP外壳上金的外部位置提供了优异的等离子体增强，从而有助于在光照下提高催化性能。本研究揭示了三金属MNP的可控合成及其催化应用，强调了精确的金定位对优化性能的重要性。
