Scalable high yield exfoliation for monolayer nanosheets

Zhuyuan Wang, Xue Yan, Qinfu Hou, Yue Liu, Xiangkang Zeng, Yuan Kang, Wang Zhao, Xuefeng Li, Shi Yuan, Ruosang Qiu, Md Hemayet Uddin, Ruoxin Wang, Yun Xia, Meipeng Jian, Yan Kang, Li Gao, Songmiao Liang, Jefferson Zhe Liu, Huanting Wang and Xiwang Zhang ()
Additional contact information
Zhuyuan Wang: Monash University
Xue Yan: The University of Melbourne
Qinfu Hou: Monash University
Yue Liu: Monash University
Xiangkang Zeng: The University of Queensland
Yuan Kang: Monash University
Wang Zhao: Monash University
Xuefeng Li: Monash University
Shi Yuan: Monash University
Ruosang Qiu: Monash University
Md Hemayet Uddin: Melbourne Centre for Nanofabrication
Ruoxin Wang: Monash University
Yun Xia: Monash University
Meipeng Jian: Monash University
Yan Kang: Vontron Membrane Technology Co. Ltd.
Li Gao: South East Water Corporation
Songmiao Liang: Vontron Membrane Technology Co. Ltd.
Jefferson Zhe Liu: The University of Melbourne
Huanting Wang: Monash University
Xiwang Zhang: Monash University

Nature Communications, 2023, vol. 14, issue 1, 1-8

Abstract: Abstract Although two-dimensional (2D) materials have grown into an extended family that accommodates hundreds of members and have demonstrated promising advantages in many fields, their practical applications are still hindered by the lack of scalable high-yield production of monolayer products. Here, we show that scalable production of monolayer nanosheets can be achieved by a facile ball-milling exfoliation method with the assistance of viscous polyethyleneimine (PEI) liquid. As a demonstration, graphite is effectively exfoliated into graphene nanosheets, achieving a high monolayer percentage of 97.9% at a yield of 78.3%. The universality of this technique is also proven by successfully exfoliating other types of representative layered materials with different structures, such as carbon nitride, covalent organic framework, zeolitic imidazolate framework and hexagonal boron nitride. This scalable exfoliation technique for monolayer nanosheets could catalyze the synthesis and industrialization of 2D nanosheet materials.

Date: 2023
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DOI: 10.1038/s41467-022-35569-8

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