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Growth of Porous Ag@AuCu Trimetal Nanoplates Assisted by Self-Assembly.


ABSTRACT: The self-assembly process of metal nanoparticles has aroused wide attention due to its low cost and simplicity. However, most of the recently reported self-assembly systems only involve two or fewer metals. Herein, we first report a successful synthesis of self-assembled Ag@AuCu trimetal nanoplates in aqueous solution. The building blocks of multibranched AuCu alloy nanocrystals were first synthesized by a chemical reduction method. The growth of Ag onto the AuCu nanocrystals in the presence of hexadecyltrimethylammonium chloride (CTAC) induces a self-assembly process and formation of Ag@AuCu trimetal nanoplates. These nanoplates with an average side length of over 2 ?m show a porous morphology and a very clear boundary with the branches of the as-prepared AuCu alloy nanocrystals extending out. The shape and density of the Ag@AuCu trimetal nanoplates can be controlled by changing the reaction time and the concentration of silver nitrate. The as-assembled Ag@AuCu nanoplates are expected to have the potential for wide-ranging applications in surface-enhanced Raman scattering (SERS) and catalysis owing to their unique structures.

SUBMITTER: Zhang WC 

PROVIDER: S-EPMC7694533 | biostudies-literature | 2020 Nov

REPOSITORIES: biostudies-literature

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Growth of Porous Ag@AuCu Trimetal Nanoplates Assisted by Self-Assembly.

Zhang Wan-Cheng WC   Luoshan Meng-Dai MD   Wang Peng-Fei PF   Huang Chu-Yun CY   Wang Qu-Quan QQ   Ding Si-Jing SJ   Zhou Li L  

Nanomaterials (Basel, Switzerland) 20201105 11


The self-assembly process of metal nanoparticles has aroused wide attention due to its low cost and simplicity. However, most of the recently reported self-assembly systems only involve two or fewer metals. Herein, we first report a successful synthesis of self-assembled Ag@AuCu trimetal nanoplates in aqueous solution. The building blocks of multibranched AuCu alloy nanocrystals were first synthesized by a chemical reduction method. The growth of Ag onto the AuCu nanocrystals in the presence of  ...[more]

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