Inverted vortex fluidic exfoliation and scrolling of hexagonal-boron nitride

被引：21

作者：

Al-Antaki, Ahmed Hussein Mohammed ^{[1
,2
]}

Luo, Xuan ^{[1
]}

Alharbi, Thaar M. D. ^{[1
]}

Harvey, David P. ^{[1
]}

Pye, Scott ^{[1
]}

Zou, Jin ^{[3
]}

Lawrance, Warren ^{[4
]}

Raston, Colin L. ^{[1
]}

机构：

[1] Flinders Univ S Australia, Coll Sci & Engn, Flinders Inst Nanoscale Sci & Technol, Adelaide, SA 5042, Australia

[2] Kufa Univ, Fac Sci, Dept Chem, Kufa, Najaf, Iraq

[3] Univ Queensland, Ctr Microscopy & Microanal, Mat Engn, Brisbane, Qld 4072, Australia

[4] Flinders Univ S Australia, Coll Sci & Engn, Adelaide, SA 5042, Australia

来源：

RSC ADVANCES | 2019年 / 9卷 / 38期

基金：

澳大利亚研究理事会;

关键词：

WALLED CARBON NANOTUBES; GRAPHENE; NANOSCROLLS; NANOSHEETS; FABRICATION; STORAGE;

D O I：

10.1039/c9ra03970h

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

Exfoliation or scrolling of hexagonal boron nitride (h-BN) occurs in a vortex fluidic device (VFD) operating under continuous flow, with a tilt angle of -45 degrees relative to the horizontal position. This new VFD processing strategy is effective in avoiding the build-up of material that occurs when the device is operated using the conventional tilt angle of +45 degrees, where the h-BN precursor and scrolls are centrifugally held against the wall of the tube. At a tilt angle of -45 degrees the downward flow aided by gravity facilitates material exiting the tube with the exfoliation of h-BN and formation of h-BN scrolls then optimized by systematically varying the other VFD operating parameters, including flow rate and rotational speed, along with concentration of h-BN and the choice of solvent. Water was the most effective solvent, which enhances the green chemistry metrics of the processing.

引用

页码：22074 / 22079

页数：6

共 47 条

[21] Formation of hexagonal boron nitride nanoscrolls induced by inclusion and exclusion of self-assembling molecules in solution process [J].