Toward Exploring the Structure of Monolayer to Few-layer TaS2 by Efficient Ultrasound-free Exfoliation

Yiwei Hu; Qiaoyan Hao; Baichuan Zhu; Biao Li; Zhan Gao; Yan Wang; Kaibin Tang

doi:10.1186/s11671-018-2439-z

Nanoscale Research Letters (Jan 2018)

Toward Exploring the Structure of Monolayer to Few-layer TaS2 by Efficient Ultrasound-free Exfoliation

Yiwei Hu,
Qiaoyan Hao,
Baichuan Zhu,
Biao Li,
Zhan Gao,
Yan Wang,
Kaibin Tang

Affiliations

Yiwei Hu: Department of Chemistry, Division of Nanomaterials and Chemistry, Hefei National Laboratory for Physical Sciences at the Microscale, University of Science and Technology of China
Qiaoyan Hao: Department of Chemistry, Division of Nanomaterials and Chemistry, Hefei National Laboratory for Physical Sciences at the Microscale, University of Science and Technology of China
Baichuan Zhu: Department of Chemistry, Division of Nanomaterials and Chemistry, Hefei National Laboratory for Physical Sciences at the Microscale, University of Science and Technology of China
Biao Li: Department of Chemistry, Division of Nanomaterials and Chemistry, Hefei National Laboratory for Physical Sciences at the Microscale, University of Science and Technology of China
Zhan Gao: Department of Chemistry, Division of Nanomaterials and Chemistry, Hefei National Laboratory for Physical Sciences at the Microscale, University of Science and Technology of China
Yan Wang: Department of Chemistry, Division of Nanomaterials and Chemistry, Hefei National Laboratory for Physical Sciences at the Microscale, University of Science and Technology of China
Kaibin Tang: Department of Chemistry, Division of Nanomaterials and Chemistry, Hefei National Laboratory for Physical Sciences at the Microscale, University of Science and Technology of China

DOI: https://doi.org/10.1186/s11671-018-2439-z
Journal volume & issue: Vol. 13, no. 1
pp. 1 – 7

Abstract

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Abstract Tantalum disulfide nanosheets have attracted great interest due to its electronic properties and device applications. Traditional solution-ased ultrasonic process is limited by ultrasound which may cause the disintegration into submicron-sized flake. Here, an efficient multi-step intercalation and ultrasound-free process has been successfully used to exfoliate 1T-TaS2. The obtained TaS2 nanosheets reveal an average thickness of 3 nm and several micrometers in size. The formation of few-layer TaS2 nanosheets as well as monolayer TaS2 sheets is further confirmed by atomic force microscopy images. The few-layer TaS2 nanosheets remain the 1T structure, whereas monolayer TaS2 sheets show lattice distortion and may adopt the 1H-like structure with trigonal prism coordination.

Published in Nanoscale Research Letters

ISSN: 1931-7573 (Print); 1556-276X (Online)
Publisher: SpringerOpen
Country of publisher: United Kingdom
LCC subjects: Technology: Electrical engineering. Electronics. Nuclear engineering: Materials of engineering and construction. Mechanics of materials
Website: https://www.springer.com/journal/11671

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