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Research Article

Ethylenediaminetetraacetic acid-assisted synthesis of Bi2Se3 nanostructures with unique edge sites

Xianli Liu, Zhicheng Fang, Qi Zhang, Ruijie Huang, Lin Lin, Chunmiao Ye, Chao Ma( ), Jie Zeng( )
Hefei National Laboratory for Physical Sciences at the MicroscaleKey Laboratory of Strongly-Coupled Quantum Matter Physics of Chinese Academy of SciencesHefei Science Center & National Synchrotron Radiation LaboratoryDepartment of Chemical PhysicsUniversity of Science and Technology of ChinaHefei230026China
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Abstract

Nanomaterials with unique edge sites have received increasing attention due to their superior performance in various applications. Herein, we employed an effective ethylenediaminetetraacetic acid (EDTA)-assisted method to synthesize a series of exotic Bi2Se3 nanostructures with distinct edge sites. It was found that the products changed from smooth nanoplates to half-plate-containing and crown-like nanoplates upon increasing the molar ratio of EDTA to Bi3+. Mechanistic studies indicated that, when a dislocation source and relatively high supersaturation exist, the step edges in the initially formed seeds can serve as supporting sites for the growth of epilayers, leading to the formation of half-plate-containing nanoplates. In contrast, when the dislocation source and a suitably low supersaturation are simultaneously present in the system, the dislocation-driven growth mode dominates the process, in which the step edges form at the later stage of the growth responsible for the formation of crown-like nanoplates.

Keywords

Bi2Se3 edge sitesethylenediaminetetraacetic acid (EDTA)dislocation sourcesupersaturation

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Nano Research
Volume 9 Issue 9,
September 2016
Pages 2707-2714
DOI: 10.1007/s12274-016-1159-x
Cite this article:
Liu X, Fang Z, Zhang Q, et al. Ethylenediaminetetraacetic acid-assisted synthesis of Bi2Se3 nanostructures with unique edge sites. Nano Research, 2016, 9(9): 2707-2714. https://doi.org/10.1007/s12274-016-1159-x

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Received: 20 March 2016
Revised: 17 May 2016
Accepted: 19 May 2016
Published: 05 July 2016
© Tsinghua University Press and Springer‐Verlag Berlin Heidelberg 2016
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