Supercritical Fluid-Facilitated Exfoliation and Processing of 2D Materials

被引：89

作者：

Sun, Zhenyu ^{[1
]}

Fan, Qun ^{[1
]}

Zhang, Mingli ^{[1
]}

Liu, Shizhen ^{[1
]}

Tao, Hengcong ^{[1
]}

Texter, John ^{[2
]}

机构：

[1] Beijing Univ Chem Technol, State Key Lab Organ Inorgan Composites, Beijing 100029, Peoples R China

[2] Eastern Michigan Univ, Sch Engn Technol, Ypsilanti, MI 48197 USA

来源：

ADVANCED SCIENCE | 2019年 / 6卷 / 18期

基金：

北京市自然科学基金;

关键词：

2D materials; application; exfoliation; modification; supercritical fluids; REDUCED GRAPHENE OXIDE; FEW-LAYER GRAPHENE; MOLYBDENUM-DISULFIDE NANOSHEETS; LIQUID-PHASE EXFOLIATION; N-DOPED GRAPHENE; ENHANCED ELECTROCHEMICAL PERFORMANCE; CARBON-DIOXIDE; HIGH-YIELD; DECORATED GRAPHENE; IONIC-LIQUID;

D O I：

10.1002/advs.201901084

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

Since the first intercalation of layered silicates by using supercritical CO2 as a processing medium, considerable efforts have been dedicated to intercalating and exfoliating layered two-dimensional (2D) materials in various supercritical fluids (SCFs) to yield single- and few-layer nanosheets. Here, recent work in this area is highlighted. Motivating factors for enhancing exfoliation efficiency and product quality in SCFs, mechanisms for exfoliation and dispersion in SCFs, as well as general metrics applied to assess quality and processability of exfoliated 2D materials are critically discussed. Further, advances in formation and application of 2D material-based composites with assistance from SCFs are presented. These discussions address chemical transformations accompanying SCF processing such as doping, covalent surface modification, and heterostructure formation. Promising features, challenges, and routes to expanding SCF processing techniques are described.

引用

页数：34

共 302 条

[31] Fabrication of fluorographene nanosheets with high yield and good quality based on supercritical fluid-phase exfoliation [J].