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Nano Research 2009, 2(12): 966-974 https://doi.org/10.1007/s12274-009-9099-3
Research Article | Open Access | Issue | Published: 01 December 2009

Zigzag Zinc Blende ZnS Nanowires: Large Scale Synthesis and Their Structure Evolution Induced by Electron Irradiation

Show Author's Information Daesoo Kim§,  Paresh Shimpi§,  Pu-Xian Gao( )
Department of ChemicalMaterials and Biomolecular Engineering & Institute of Material ScienceUniversity of Connecticut, Storrs, CT 06269-3136USA

§ These authors equally contributed to this work.

Keywords:
electron irradiation, transmission electron microscopy, ZnS nanowire, polymorph, vapor-solid-solid growth, structure evolution
Cite this article:
Kim D, Shimpi P, Gao P-X. Zigzag Zinc Blende ZnS Nanowires: Large Scale Synthesis and Their Structure Evolution Induced by Electron Irradiation. Nano Research, 2009, 2(12): 966-974. https://doi.org/10.1007/s12274-009-9099-3
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Abstract Full text About this article

Large scale zigzag zinc blende single crystal ZnS nanowires have been successfully synthesized during a vapor phase growth process together with a small yield of straight wurtzite single crystal ZnS nanowires. AuPd alloy nanoparticles were utilized to catalyze a vapor-solid-solid growth process of both types of ZnS nanowires, instead of the more common vapor-liquid-solid growth process. Surprisingly, the vapor-phase grown zigzag zinc blende ZnS nanowires are metastable under high-energy electron irradiation in a transmission electron microscope, with straight wurtzite nanowires being much more stable. Upon exposure to electron irradiation, a wurtzite ZnO nanoparticle layer formed on the zigzag zinc blende ZnS nanowire surface with concomitant displacement damage. Both electron inelastic scattering and surface oxidation as a result of electron-beam heating occur during this structure evolution process. When prolonged higher-voltage electron irradiation was applied, local zinc blende ZnS nanowire bodies evolved into ZnS-ZnO nanocables, and dispersed ZnS-ZnO nanoparticle networks. Random AuPd nanoparticles were observed distributed on zigzag ZnS nanowire surfaces, which might be responsible for a catalytic oxidation effect and speed up the surface oxidation-induced structure evolution.


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About this article

Zigzag Zinc Blende ZnS Nanowires: Large Scale Synthesis and Their Structure Evolution Induced by Electron Irradiation

Show Author's information Daesoo Kim§, Paresh Shimpi§, Pu-Xian Gao( )
Department of ChemicalMaterials and Biomolecular Engineering & Institute of Material ScienceUniversity of Connecticut, Storrs, CT 06269-3136USA

§ These authors equally contributed to this work.

Abstract

Large scale zigzag zinc blende single crystal ZnS nanowires have been successfully synthesized during a vapor phase growth process together with a small yield of straight wurtzite single crystal ZnS nanowires. AuPd alloy nanoparticles were utilized to catalyze a vapor-solid-solid growth process of both types of ZnS nanowires, instead of the more common vapor-liquid-solid growth process. Surprisingly, the vapor-phase grown zigzag zinc blende ZnS nanowires are metastable under high-energy electron irradiation in a transmission electron microscope, with straight wurtzite nanowires being much more stable. Upon exposure to electron irradiation, a wurtzite ZnO nanoparticle layer formed on the zigzag zinc blende ZnS nanowire surface with concomitant displacement damage. Both electron inelastic scattering and surface oxidation as a result of electron-beam heating occur during this structure evolution process. When prolonged higher-voltage electron irradiation was applied, local zinc blende ZnS nanowire bodies evolved into ZnS-ZnO nanocables, and dispersed ZnS-ZnO nanoparticle networks. Random AuPd nanoparticles were observed distributed on zigzag ZnS nanowire surfaces, which might be responsible for a catalytic oxidation effect and speed up the surface oxidation-induced structure evolution.

Keywords: electron irradiation, transmission electron microscopy, ZnS nanowire, polymorph, vapor-solid-solid growth, structure evolution

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Publication history

Received: 20 September 2009
Revised: 23 October 2009
Accepted: 23 October 2009
Published: 01 December 2009
Issue date: December 2009

Copyright

© Tsinghua University Press and Springer-Verlag 2009

Acknowledgements

Acknowledgements

The authors are grateful for the financial support from the University of Connecticut New Faculty start-up funds, and the University of Connecticut Large Faculty Research Grant. Acknowledgement is also made to the Donors of the American Chemical Society Petroleum Research Fund for partial support of this research.

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