Hollow Ag2S nanosphere formation via electron beam-assisted oxidative etching of Ag nanoparticles

Sung Joo Kim; Kyun Seong Dae; Jae Yeol Park; Jeong Yong Lee; Jong Min Yuk

doi:10.1039/C7CC06223K

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Hollow Ag₂S nanosphere formation via electron beam-assisted oxidative etching of Ag nanoparticles†

Sung Joo Kim,

^ab Kyun Seong Dae,^ab Jae Yeol Park,^b Jeong Yong Lee*^ab and Jong Min Yuk*^b

Author affiliations

* Corresponding authors

^a Center for Nanomaterials and Chemical Reactions, Institute of Basic Science (IBS), Daejeon, Republic of Korea

^b Materials Science and Engineering, Korea Advanced Institute of Science and Technology, 335 Science Road, Daejeon, Republic of Korea
E-mail: j.y.lee@kaist.ac.kr, jongmin.yuk@kaist.ac.kr

Abstract

Herein, the dynamics of oxidative etching of Ag nanoparticles in an ionic liquid is monitored in situ via graphene liquid cell transmission electron microscopy. The results reveal that hollow nanosphere formation occurs via a stepwise process involving shell formation and hollowing of the nanoparticle. In addition, we describe the different etching kinetics in each step.

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Article information

DOI: https://doi.org/10.1039/C7CC06223K
Article type: Communication
Submitted: 09 Aug 2017
Accepted: 18 Sep 2017
First published: 18 Sep 2017

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Chem. Commun., 2017,53, 11122-11125

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Hollow Ag₂S nanosphere formation via electron beam-assisted oxidative etching of Ag nanoparticles

S. Joo Kim, K. Seong Dae, J. Yeol Park, J. Yong Lee and J. Min Yuk, Chem. Commun., 2017, 53, 11122 DOI: 10.1039/C7CC06223K

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