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Nano Research

Article Title

Facile ultrafine copper seed-mediated approach for fabricating quasi-two-dimensional palladium-copper bimetallic trigonal hierarchical nanoframes

Authors

Min Shen, State Key Laboratory of Structural Chemistry, Fujian Institute of Research on the Structure of Matter, Chinese Academy of Science, 155 Yangqiao West Road, Fuzhou 350002, China University of the Chinese Academy of Sciences, Beijing 100049, China
Yuanbiao Huang, State Key Laboratory of Structural Chemistry, Fujian Institute of Research on the Structure of Matter, Chinese Academy of Science, 155 Yangqiao West Road, Fuzhou 350002, China
Dongshuang Wu, State Key Laboratory of Structural Chemistry, Fujian Institute of Research on the Structure of Matter, Chinese Academy of Science, 155 Yangqiao West Road, Fuzhou 350002, China
Jian Lü, State Key Laboratory of Structural Chemistry, Fujian Institute of Research on the Structure of Matter, Chinese Academy of Science, 155 Yangqiao West Road, Fuzhou 350002, China
Minna Cao, State Key Laboratory of Structural Chemistry, Fujian Institute of Research on the Structure of Matter, Chinese Academy of Science, 155 Yangqiao West Road, Fuzhou 350002, China
Meimei Liu, State Key Laboratory of Structural Chemistry, Fujian Institute of Research on the Structure of Matter, Chinese Academy of Science, 155 Yangqiao West Road, Fuzhou 350002, China
Yinglong Yang, State Key Laboratory of Structural Chemistry, Fujian Institute of Research on the Structure of Matter, Chinese Academy of Science, 155 Yangqiao West Road, Fuzhou 350002, China
Hongfang Li, State Key Laboratory of Structural Chemistry, Fujian Institute of Research on the Structure of Matter, Chinese Academy of Science, 155 Yangqiao West Road, Fuzhou 350002, China
Binbin Guo, State Key Laboratory of Structural Chemistry, Fujian Institute of Research on the Structure of Matter, Chinese Academy of Science, 155 Yangqiao West Road, Fuzhou 350002, China
Rong Cao, State Key Laboratory of Structural Chemistry, Fujian Institute of Research on the Structure of Matter, Chinese Academy of Science, 155 Yangqiao West Road, Fuzhou 350002, China

Keywords

ultrafine seed mediation, Pd–Cu, hierarchical, anisotropy, ethanol oxidation

Abstract

ABSTRACT Anisotropic Pd nanoparticles with highly branched morphologies are urgently needed as building blocks for nanoscale devices, catalysts, and sensing materials owing to their novel structures and unique physicochemical properties. However, realizing size control and branch manipulation for these materials is very challenging. In this study, we develop a facile ultrafine Cu seed-mediated approach in the aqueous phase to produce novel Pd–Cu trigonal hierarchical nanoframes (THNFs). The main branch of most of the obtained nanocrystals is tripod-like, with advanced branches along the arms as frame units having self-similarity. In this method, the size of the Pd–Cu THNFs can be flexibly controlled by manipulating the nucleation involving the sub-3 nm Cu seeds. These Pd–Cu THNFs outperform Pd black with regard to their ethanol-oxidation performance, having a specific activity and mass activity 9.7 and 6.6 times higher, respectively. This research provides a versatile ultrafine seed-mediated approach for producing size-controlled anisotropic bimetallic nanoframes.

Graphical Abstract

Publisher

Tsinghua University Press

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