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Ultrathin and stable AgAu alloy nanowires

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Abstract

Stable sub-two nanometer AgAu nanowires were synthesized using a CO-mediated gas reducing agent in liquid solution (GRAILS) method. These AgAu nanowires are stable, and do not readily break into short nanorods upon heating or electron beam irradiation. The surfaces along the longitudinal direction of the AgAu nanowires were largely bounded by the stable {111} facets. This structure differs from those ultrathin Au nanowires made without the use of CO gas, which were bounded by the {100} facets and unstable under e-beam irradiation. These differences in structure and composition lead to enhanced stability.

中文摘要

本文通过一氧化碳辅助GRAILS法(gas reducing agent in liquid solution)制备得到稳定的亚2 nm粗细的银金合金纳米线. 这 些银金合金纳米线在加热和在电子束辐照的条件下表现出良好的稳定性. 对其纳米结构进行表征, 我们发现这种纳米线沿纳米线径向 主要由{111}晶面组成. 这个结构不同于没有一氧化碳辅助生长的以{100}面为主的金纳米线. 后者在电子束辐照的条件下非常不稳定. 结构和成分上的区别导致了稳定性的提高.

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Author information

Authors and Affiliations

  1. Department of Chemical and Biomolecular Engineering, University of Illinois at Urbana-Champaign, Urbana, Illinois, 61801, USA

    Jianbo Wu, Yung-Tin Pan & Hong Yang

  2. Brookhaven National Laboratory, Center for Functional Nanomaterials, Upton, NY, 11973-5000, USA

    Dong Su

Authors
  1. Jianbo Wu
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  2. Yung-Tin Pan
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  3. Dong Su
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  4. Hong Yang
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Corresponding author

Correspondence to Hong Yang.

Additional information

Jianbo Wu was born in Zhejiang, China, in 1982. He received his BSc degree in 2005, and MSc degree in 2007, both from Zhejiang University. He received his PhD degree majored in chemical engineering in 2012 under the direction of Prof. Hong Yang at University of Rochester, and then did his postdoc research jointly in Prof. Hong Yang (2012-2014) and Prof. Jian-Min Zuo (2013-2014) groups at the University of Illinois at Urbana-Champaign (UIUC). He received Elon Huntington Hooker Fellowship from the University of Rochester in 2011, and Shen Postdoctoral Fellowship from Chemical and Biomolecular Engineering Department, UIUC in 2013-2014. He was recruited by Shanghai Jiaotong University under the “National Thousand Talents Plan for Young Professionals” in 2014. His research interest is on colloidal chemistry, shape control of platinum-based alloys and intermetallics, and their applications as electrocatalysts.

Hong Yang is a Richard C Alkire Professor of Chemical and Biomolecular Engineering at UIUC. He received his BSc degree from Tsinghua University (1989), MSc degree from the University of Victoria (1994), and PhD degree from the University of Toronto (1998). After working at Harvard University as an NSERC postdoctoral fellow (1998-2001), he started his career at the University of Rochester before joining the Department of Chemical and Biomolecular Engineering at UIUC in 2012. Dr. Yang is an NSERC Canada Doctoral Prize winner and an NSF CAREER Award recipient. His current research interests include control of nanocrystals, surface modification, in situ TEM study of nanomaterials in solution and under reacting atmosphere, catalysis and electrocatalysis, and nanomaterials for energy and biological applications.

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Wu, J., Pan, YT., Su, D. et al. Ultrathin and stable AgAu alloy nanowires. Sci. China Mater. 58, 595–602 (2015). https://doi.org/10.1007/s40843-015-0072-z

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