In Situ Liquid Cell Transmission Electron Microscopy Observations of Growth and Anticorrosion Behaviors of AuCI3 Shell on Au Nanobipyramids

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外文摘要：Designing new materials and architectures to maintain activity and stability requires a better understanding on the anticorrosion dy-namics of nanoparticles.Under-coordinated atoms on the surface of nanoparticles can be protected by deposited shells.Real-time observation on how protective shells grow and play a role is challenging but worthwhile.Here,protective effects of AuCI3 shells on Au nanobipyramids(NBPs)are studied in HAuCI4 aqueous solutions by in-situ liquid cell transmission electron microscopy(LCTEM).This study is the first to observe the formation of Au-AuCI3 core-shell nanostructure and the corresponding anticorrosion behaviors of AuCI3 deposited shell.The presence of CTAB can substantially influence the growth mode and structure of AuCI3 shell,by a direct or indirect way,intervene the dissolution of Au NBP.These growth or dissolution kinetics here revealed at the nanoscale provide insights towards engineering of the surface anticorrosion to pursue Au nanoparticles with improved stability in acidic environment.

外文关键词：

In situ liquid cell TEMAu-AuCl3 core-shellGrowth processAnticorrosion behaviorNanotechnologySynthesis designCrystal structure

作者：

Wei Wei、Jun Sun、Songtao Zhang、Litao Sun、Feng Xu

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作者单位：

School of Information Technology,Jiangsu Open University,Nanjing,Jiangsu 210036,China

SEU-FEI Nano-Pico Center,Key Laboratory of MEMS of Ministry of Education,Collaborative Innovation Center for Micro/Nano Fabrication,Device and System,Southeast University,Nanjing,Jiangsu 210096,China

Testing Center,Yangzhou University,Yangzhou,Jiangsu 225009,China

出版年：

2024

DOI：

10.1002/cjoc.202400503

中国化学(英文版)

中国化学会上海有机化学研究所

中国化学(英文版)

CSTPCD

影响因子：0.848

ISSN：1001-604X

年,卷(期)：2024.42(22)