Yolk‐Shell AuAgPt Alloy Nanostructures with Tunable Morphologies: Plasmon‐Enhanced Photothermal and Catalytic Properties

Advanced Energy & Sustainability Research

Yi Wang¹  Juan Tan¹  Hongwen Huang²  Yanyun Ma³  Feng Liu⁴  Maochang Liu⁴  Hongyan Zou⁵  Yiqun Zheng⁶  Gongguo Zhang⁶ 

[1] Chongqing Key Laboratory of Green Synthesis and Applications College of Chemistry Chongqing Normal University Chongqing 401331 China;College of Materials Science and Engineering Hunan University Changsha Hunan 410082 China;Institute of Functional Nano & Soft Materials (FUNSOM) Jiangsu Key Laboratory for Carbon-Based Functional Materials & Devices Soochow University Suzhou Jiangsu 215123 China;International Research Center for Renewable Energy National Key Laboratory of Multiphase Flow in Power Engineering Xi'an Jiaotong University Xi'an Shaanxi 710049 China;Key Laboratory of Luminescence Analysis and Molecular Sensing (Southwest University) Ministry of Education College of Pharmaceutical Sciences Southwest University Chongqing 400715 China;School of Chemistry, Chemical Engineering, and Materials Jining University Qufu Shandong 273155 China;

关键词: multi-metallic;    noble metals;    photothermal;    plasmon enhancements;    yolk shells;   

DOI  :  10.1002/aesr.202100222

来源: DOAJ

【 摘 要 】

Herein, the preparation of AuAgPt alloy yolk‐shell nanostructures with tunable elemental compositions and morphologies by conducting the mild, successive galvanic replacement reaction (GRR) between Au@Ag core‐shell nanocubes and H2PtCl6 is reported. In particular, the resulting products can be featured with well‐defined cubic frames and the distribution of all the three metals over the whole particle, which is enabled by the unique “etching and regrowth” mechanism. Due to the strong absorbance in visible region, the current products exhibit superb performances in two localized surface plasmon resonance (LSPR)‐based applications, photothermal heat conversion, and plasmon‐enhanced catalytic reduction of 4‐nitrophenol (4‐NP). In particular, the optimized photothermal heat conversion efficiency and the apparent rate constant of photocatalytic 4‐NP reduction reach 12.9% and 0.155 min−1, respectively, for the sample AuAgPt‐6 and AuAgPt‐12, respectively. Herein the present study, a feasible strategy for fabrication of plasmonic‐active multimetallic alloy nanocrystals with yolk‐shell structure and cubic frame‐like edges is offered and their promising use in photothermal heat conversion and photocatalysis is validated, which could be extended to other alloys or material combinations for rational design of nanoscale materials with plasmon‐enhanced properties.

【 授权许可】

Unknown