High concentration and stable few-layer graphene dispersions prepared by the exfoliation of graphite in different organic solvents

RSC Advances ◽  
2013 ◽  
Vol 3 (24) ◽  
pp. 9490 ◽  
Author(s):  
Encai Ou ◽  
Yanyan Xie ◽  
Chang Peng ◽  
Yawei Song ◽  
Hua Peng ◽  
...  
Keyword(s):  
Organic Solvents ◽  
High Concentration ◽  
Layer Graphene ◽  
Few Layer Graphene

Liquid-Phase Exfoliation of Few-Layer Graphene and Effect of Sonication Time on Concentration of Produced Few Layer Graphene

2017 ◽  
Vol 14 ◽  
pp. 17-24 ◽  
Author(s):  
Syed Sajid Ali Shah ◽  
Habib Nasir
Keyword(s):  
Liquid Phase ◽  
Cost Effective ◽  
Production Method ◽  
Commercial Production ◽  
Sonication Time ◽  
High Concentration ◽  
Layer Graphene ◽  
Uv Visible ◽  
Liquid Phase Exfoliation ◽  
Few Layer Graphene

Although graphene has been produced by various methods at lab scale, however, its cost effective mass production method is still a challenge. Graphene has been produced by liquid phase exfoliation, which is the most probable method for commercial production of graphene for various industrial applications.This paper reports high concentration production of few-layer graphene in DMSO (dimethyl sulfoxide) as solvent through liquid phase exfoliation assisted with sonication. The temperature was kept below 30oC. SEM, AFM, and XRD were used to characterize the produced graphene. SEM results confirm the production of few-layer graphene. EDX analysis shows that the graphene surface is free from oxides and impurities. AFM results also confirm the production of few-layer graphene. The UV-visible spectrophotometer was used to determine the concentration of the produced graphene, and the investigations demonstrate that the graphene production was increased by increasing the sonication time. There exist a linear relationship between the amount of produced graphene and sonication time for supplying energy during sonication.

scholarly journals Preparation of Colloidal Dispersions of Graphene Sheets in Organic Solvents by Using Ball Milling

2010 ◽  
Vol 2010 ◽  
pp. 1-5 ◽  
Author(s):  
Weifeng Zhao ◽  
Furong Wu ◽  
Hang Wu ◽  
Guohua Chen
Keyword(s):  
Organic Solvents ◽  
Colloidal Suspension ◽  
Colloidal Dispersions ◽  
Graphene Sheets ◽  
Graphite Nanosheets ◽  
Force Microscopy ◽  
Layer Graphene ◽  
Atomic Force ◽  
Transmission Electron ◽  
Few Layer Graphene

A top-down method was developed for producing colloidal dispersions of graphene sheets. Graphite nanosheets comprising hundreds of carbon layers were dispersed and gently ball-milled to exfoliate into graphene in a variety of organic solvents. After 30 hours of the shear-force-dominated grinding and a subsequent 4000 r.p.m. of centrifugation, single- and few-layer graphene sheets were readily prepared and homogeneously and stably suspended in the good solvent medium which possesses a surface tension value close to 40 mJm−2, such as inN,N-dimethylformamide, at a concentration up to 0.08 mg ml−1, achieving a yield higher than 32.0 wt%. The graphene materials in the colloidal suspension were characterized using scanning and transmission electron microscopy and atomic force microscopy.

Few-layer graphene based sponge as a highly efficient, recyclable and selective sorbent for organic solvents and oils

RSC Advances ◽  
2015 ◽  
Vol 5 (66) ◽  
pp. 53741-53748 ◽  
Author(s):  
Er-Chieh Cho ◽  
Yu-Sheng Hsiao ◽  
Kuen-Chan Lee ◽  
Jen-Hsien Huang
Keyword(s):  
Organic Solvents ◽  
Selective Sorbent ◽  
Layer Graphene ◽  
Highly Efficient ◽  
Grinding Method ◽  
Few Layer Graphene ◽  
Bulk Production

In this work, we illustrate a facile and economical strategy for the bulk production of aqueous few layer graphene (FLG) dispersions via a simple grinding method.

Production of few-layer graphene by wet media milling using organic solvents and different types of graphite

2020 ◽  
Vol 46 (2) ◽  
pp. 2413-2420 ◽  
Author(s):  
Sergio Mancillas-Salas ◽  
Joaquín Barroso-Flores ◽  
Rafael Villaurrutia ◽  
Verónica García-Montalvo ◽  
Eddie López-Honorato
Keyword(s):  
Organic Solvents ◽  
Layer Graphene ◽  
Media Milling ◽  
Different Types ◽  
Few Layer Graphene

High-concentration aliphatic and aromatic dispersions of single- and few-layer graphene noncovalently modified by block copolymer crystallization

Carbon ◽  
2012 ◽  
Vol 50 (12) ◽  
pp. 4760-4764 ◽  
Author(s):  
Nan Chen ◽  
Yi-Tao Liu ◽  
Xu-Ming Xie ◽  
Xiong-Ying Ye ◽  
Xu Feng ◽  
...  
Keyword(s):  
Block Copolymer ◽  
High Concentration ◽  
Layer Graphene ◽  
Few Layer Graphene

High concentration of few‐layer graphene and MoS 2 nanosheets using carboxyl methyl cellulose as a high‐performance stabiliser

2019 ◽  
Vol 14 (8) ◽  
pp. 835-839
Author(s):  
Jingqi Shang ◽  
Enyong Ding ◽  
Feng Xue ◽  
Xingrong Zeng ◽  
Jiewei Chen ◽  
...  
Keyword(s):  
High Performance ◽  
Methyl Cellulose ◽  
High Concentration ◽  
Layer Graphene ◽  
Few Layer Graphene

scholarly journals High concentration few-layer graphene sheets obtained by liquid phase exfoliation of graphite in ionic liquid

2011 ◽  
Vol 21 (10) ◽  
pp. 3428-3431 ◽  
Author(s):  
Daniele Nuvoli ◽  
Luca Valentini ◽  
Valeria Alzari ◽  
Sergio Scognamillo ◽  
Silvia Bittolo Bon ◽  
...  
Keyword(s):  
Ionic Liquid ◽  
Liquid Phase ◽  
Graphene Sheets ◽  
High Concentration ◽  
Layer Graphene ◽  
Liquid Phase Exfoliation ◽  
Few Layer Graphene
Sign in / Sign up

Export Citation Format

Share Document