Microfluidics for Two-Dimensional Nanosheets: A Mini Review

Processes

Yeongwon Kwak¹  Chang-Ho Choi¹  Rajiv Malhotra²  Chih-Hung Chang³ 

[1] Department of Chemical Engineering, Gyeongsang National University, Jinjudaero 501, Jinju-si, Gyeongsangnam-do 52828, Korea;Department of Mechanical and Aerospace Engineering, Rutgers University, Brett Road 98, Piscataway, NJ 08854, USA;School of Chemical, Biological & Environmental Engineering, Oregon State University, Corvallis, OR 97331, USA;

关键词: 2D materials;    liquid exfoliation;    microfluidics;   

DOI  :  10.3390/pr8091067

来源: DOAJ

【 摘 要 】

Since the discovery of graphene, there has been increasing interest in two-dimensional (2D) materials. To realize practical applications of 2D materials, it is essential to isolate mono- or few-layered 2D nanosheets from unexfoliated counterparts. Liquid phase exfoliation (LPE) is the most common technique to produce atomically thin-layered 2D nanosheets. However, low production yield and prolonged process time remain key challenges. Recently, novel exfoliation processes based on microfluidics have been developed to achieve rapid and high yield production of few-layer 2D nanosheets. We review the primary types of microfluidic-based exfoliation techniques in terms of the underlying process mechanisms and the applications of the 2D nanosheets thus produced. The key challenges and future directions are discussed in the above context to delineate future research directions in this exciting area of materials processing.

【 授权许可】

Unknown