期刊
NANOTECHNOLOGY
卷 32, 期 40, 页码 -出版社
IOP PUBLISHING LTD
DOI: 10.1088/1361-6528/ac0931
关键词
hexagonal boron nitride; few-layers hexagonal boron nitride; chemical exfoliation
资金
- ARC Research Hub for Graphene Enabled Industry Transformation [IH150100003]
- University of South Australia
- South Australian State Government
- Australian Federal Governments NCRIS scheme
This study presents a high-yield, low-cost, and energy-efficient wet chemical exfoliation strategy to produce edge-functionalized hBN nanosheets with uniform size, which is confirmed by various characterization techniques. This optimized preparation paves a promising pathway for effectively producing hBN through a cost-efficient exfoliation approach.
Owing to many fascinating properties including high thermal and chemical stability, excellent electrical insulation, fire-retardant and antibacterial properties, hexagonal boron nitride (hBN) has emerged as a prominent 2D material for broad applications. However, the production of high quality of hBN by chemical exfoliation from its precursor is still challenging. This paper presents a high-yield (+83%), low-cost and energy-efficient wet chemical exfoliation strategy, which produces few-layers (FL, 3-6 layers) of edge-functionalized (OH) hBN nanosheets with uniform size (486 +/- 51 nm). This optimized preparation is established based on a comprehensive investigation on the key exfoliation parameters such as exfoliation temperature, time and amount of the oxidant (potassium permanganate). High quality of FL-hBN was confirmed by various characterization techniques including scanning electron microscopy coupled with energy dispersive X-ray, transmission electron microscopy, Raman, Fourier transform infrared spectroscopy, X-ray diffraction and X-ray photoelectron spectroscopy analyses. The outcome of this study paves a promising pathway to effectively produce hBN through a cost-efficient exfoliation approach, which has a significant impact on industrial applications.
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