scholarly journals Liquid-Phase Exfoliation of Nanotubes and Graphene

2009 ◽  
Vol 19 (23) ◽  
pp. 3680-3695 ◽  
Author(s):  
Jonathan N. Coleman
Keyword(s):  
Liquid Phase ◽  
Liquid Phase Exfoliation

PbSe Nanocrystals Produced by Facile Liquid Phase Exfoliation for Efficient UV–Vis Photodetectors

2021 ◽  
Vol 31 (17) ◽  
pp. 2010401
Author(s):  
Lingfeng Gao ◽  
Rui Wang ◽  
Artem V. Kuklin ◽  
Han Zhang ◽  
Hans Ågren
Keyword(s):  
Liquid Phase ◽  
Liquid Phase Exfoliation

Green Solvents for the Liquid-Phase Exfoliation of Biochars

2021 ◽  
Author(s):  
Juliana L. Vidal ◽  
Stephanie M. V. Gallant ◽  
Evan P. Connors ◽  
Douglas D. Richards ◽  
Stephanie L. MacQuarrie ◽  
...  
Keyword(s):  
Liquid Phase ◽  
Green Solvents ◽  
Liquid Phase Exfoliation

scholarly journals Impact of Pretreatment of the Bulk Starting Material on the Efficiency of Liquid Phase Exfoliation of WS2

Nanomaterials ◽  
2021 ◽  
Vol 11 (5) ◽  
pp. 1072
Author(s):  
Steffen Ott ◽  
Melanie Lakmann ◽  
Claudia Backes
Keyword(s):  
Liquid Phase ◽  
Quantum Yield ◽  
Aspect Ratio ◽  
Optical Quality ◽  
Starting Material ◽  
Binding Strength ◽  
Photoluminescence Quantum Yield ◽  
Out Of Plane ◽  
Liquid Phase Exfoliation ◽  
Pretreatment Conditions

Liquid phase exfoliation (LPE) is widely used to produce colloidal dispersions of nanomaterials, in particular two-dimensional nanosheets. The degree of exfoliation, i.e., the length to thickness aspect ratio was shown to be intrinsically limited by the ratio of in-plane to out-of-plane binding strength. In this work, we investigate whether simple pretreatment of the starting material can be used to change the in-plane to out-of-plane binding strength through mild intercalation to improve the sample quality in sonication-assisted LPE. Five different pretreatment conditions of WS2 were tested and the dispersions size-selected through centrifugation. From optical spectroscopy (extinction, Raman, photoluminescence), information on nanosheet dimension (average lateral size, layer number, monolayer size) and optical quality (relative photoluminescence quantum yield) was extracted. We find that the pretreatment has a minor impact on the length/thickness aspect ratio, but that photoluminescence quantum yield can be increased in particular using mild sonication conditions. We attribute this to the successful exfoliation of nanosheets with a lower degree of basal plane defectiveness. This work emphasizes the complexity of the exfoliation process and suggests that the role of defects has to be considered for a comprehensive picture.

Two-Dimensional Lead Monoxide: Facile Liquid Phase Exfoliation, Excellent Photoresponse Performance, and Theoretical Investigation

ACS Photonics ◽  
2018 ◽  
Vol 5 (12) ◽  
pp. 5055-5067 ◽  
Author(s):  
Chenyang Xing ◽  
Xing Chen ◽  
Weichun Huang ◽  
Yufeng Song ◽  
Jihao Li ◽  
...  
Keyword(s):  
Liquid Phase ◽  
Theoretical Investigation ◽  
Two Dimensional ◽  
Lead Monoxide ◽  
Liquid Phase Exfoliation

Direct Liquid Phase Exfoliation of Graphite to Produce Few-Layer Graphene by Microfluidization

2019 ◽  
Vol 19 (4) ◽  
pp. 2078-2086 ◽  
Author(s):  
Yu-Zhou Wang ◽  
Tian Chen ◽  
Hai-Hui Liu ◽  
Xue-Chen Wang ◽  
Xing-Xiang Zhang
Keyword(s):  
Liquid Phase ◽  
Layer Graphene ◽  
Liquid Phase Exfoliation ◽  
Few Layer Graphene

scholarly journals Liquid phase exfoliation of GeS nanosheets in ambient conditions for lithium ion battery applications

2D Materials ◽  
2020 ◽  
Vol 7 (3) ◽  
pp. 035015 ◽  
Author(s):  
John B Boland ◽  
Ruiyuan Tian ◽  
Andrew Harvey ◽  
Victor Vega-Mayoral ◽  
Aideen Griffin ◽  
...  
Keyword(s):  
Liquid Phase ◽  
Lithium Ion Battery ◽  
Lithium Ion ◽  
Ambient Conditions ◽  
Liquid Phase Exfoliation

scholarly journals Dielectrophoretic assembly of liquid-phase-exfoliated TiS3 nanoribbons for photodetecting applications

2017 ◽  
Vol 53 (45) ◽  
pp. 6164-6167 ◽  
Author(s):  
R. Frisenda ◽  
E. Giovanelli ◽  
P. Mishra ◽  
P. Gant ◽  
E. Flores ◽  
...  
Keyword(s):  
Liquid Phase ◽  
Optoelectronic Devices ◽  
Two Dimensional ◽  
Two Dimensional Materials ◽  
Liquid Phase Exfoliation

Liquid-phase exfoliation produces colloidal two-dimensional materials that can be assembled by dielectrophoresis to fabricate optoelectronic devices.

scholarly journals OBTAINING GRAPHENE STRUCTURES AND NANOPOLYMERS USING ULTRASONIC VIBRATIONS

2021 ◽  
pp. 74-83
Author(s):  
V. V. Rubanik ◽  
◽  
V. O. Savitsky ◽  
V. V. jr. Rubanik ◽  
V. F. Lutsko ◽  
...  
Keyword(s):  
Liquid Phase ◽  
Ultrasonic Treatment ◽  
Polymer Composite Material ◽  
Optimal Time ◽  
Mutual Arrangement ◽  
Ultrasonic Vibrations ◽  
Ultrasonic Dispersion ◽  
Laboratory Equipment ◽  
Liquid Phase Exfoliation ◽  
Graphene Structures

Graphene-based polymer nanocomposites are considered a promising class of future materials. The degree of filling, the filler and binder nature, and the shape, size, and mutual arrangement of filler particles determine the properties of a polymer composite material. The destruction of nanoparticles aggregates occurs most effectively in liquid media under the action of ultrasonic vibrations. The authors proposed the technique and designed laboratory equipment for ultrasonic treatment of the finely-dispersed graphite suspension, carried out the ultrasonic treatment (UST) of finely-dispersed graphite powder. The suspensions based on graphite with a solvent were obtained. The authors carried out the experiments on producing graphene using the graphite liquid-phase exfoliation method at the ultrasonic treatment with different ultrasonic treatment times, analyzed experimental data, and selected the UST optimal time. The paper contains the results of the study of the effect of the graphite suspension base on the degree of ultrasonic liquid-phase exfoliation of graphite. The most effective synthesis of graphene structures using UST is synthesis from graphite suspensions based on dichloroethane, benzol, and dichlorobenzene. Graphene structures’ output ratio amounts to up to 66 %. The authors developed the technology for producing polymers modified with graphene structures using ultrasonic dispersion. Based on graphene synthesized by the graphite liquid-phase exfoliation, the authors obtained nanopolymers using ultrasonic vibrations, carried out DSC measurements, and studied their strength properties. The limit strength of elastic polymers is from 1.9 to 3.6 MPa at different concentrations of graphene inclusions. The residual elongation of samples within the deviation did not change and amounted to 200 %.

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