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MATERIALS LETTERS · 2020 · IF 3.204

Facile synthesis of silver nanorods/nanowires with sub-20 nm diameter and their trimetallic hollow derivatives using tiny Au seeds

Jun Zhu,Gongguo Zhang,Weiwei Chang,Xiaoqian Luan,Fengli Qu,Yiqun Zheng

We report a facile synthesis of silver nanorods/nanowires with the diameter in the range of sub-20 nm via seeded growth. The key to the success of this work relies on the use of tiny Au seeds and manipulation over reaction kinetics. In particular, their diameter could be controlled to as small as 12 nm using 5-nm spherical Au seeds. They can be further converted to trimetallic (Au@Ag-Pd) hollow derivatives with tunable hollow degree and elemental compositions by galvanic replacement reaction.

CAS / MDL: 50-81-7 112-02-7 57-09-0 13820-53-6

研究领域: 材料科学 · 纳米技术 · 化学合成

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MATERIALS LETTERS · 2011 · IF 2.12

Size effect of Au seeds on structure of Au–Pt bimetallic nanoparticles

Youwei Chen,Wei Guo Wang,Shenghu Zhou

Au–Pt bimetallic nanoparticles (NPs) were synthesized by a seeded growth method. Au NPs with different sizes were obtained by reducing HAuCl 4 with butyllithium, and AuPt bimetallic NPs were synthesized by reducing H 2 PtCl 6 with oleylamine using the pre-synthesized Au NPs as seeds. The size of Au seeds was found to be a key factor on the structure of Au–Pt bimetallic NPs. Using big Au NP seeds (8 nm or 12 nm) resulted in the formation of Au–Pt dendritic structures. While relatively small Au NPs (3 nm) were used as seeds, the fast atomic diffusion inside relatively small bimetallic NPs will result in an Au–Pt alloy formation.

研究领域: 纳米材料科学 · 化学合成 · 材料表征

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Facile synthesis of silver nanorods/nanowires with sub-20 nm diameter and their trimetallic hollow derivatives using tiny Au seeds

Size effect of Au seeds on structure of Au–Pt bimetallic nanoparticles