scholarly journals Few-layer-graphene with high yield and low sheet resistance via mild oxidation of natural graphite

RSC Advances ◽  
2017 ◽  
Vol 7 (57) ◽  
pp. 35717-35723 ◽  
Author(s):  
S. Kim ◽  
J. Y. Lee ◽  
T. H. Yoon
Keyword(s):  
Sheet Resistance ◽  
Oxidation Time ◽  
Oxidation Temperature ◽  
High Yield ◽  
Mild Oxidation ◽  
Natural Graphite ◽  
Hummers Method ◽  
Layer Graphene ◽  
Few Layer Graphene ◽  
Modified Hummers Method

The mild oxidation of natural graphite was obtained via the modified Hummers method by employing an oxidation temperature of 20 °C and KMnO4 loading of 2 g, while varying the oxidation time from 30 to 60, 90 or 120 min.

scholarly journals High voltage electrochemical exfoliation of graphite for high-yield graphene production

RSC Advances ◽  
2019 ◽  
Vol 9 (50) ◽  
pp. 29305-29311 ◽  
Author(s):  
Sarah Roscher ◽  
René Hoffmann ◽  
Mario Prescher ◽  
Peter Knittel ◽  
Oliver Ambacher
Keyword(s):  
High Voltage ◽  
Single Step ◽  
High Yield ◽  
Natural Graphite ◽  
Electrochemical Exfoliation ◽  
Layer Graphene ◽  
Highly Efficient ◽  
Graphene Production ◽  
Few Layer Graphene

We demonstrate a highly efficient, single-step, cathodic exfoliation process of graphite to produce single- to few-layer graphene with a yield of over 70% from natural graphite flakes.

scholarly journals High yield production and purification of few layer graphene by Gum Arabic assisted physical sonication

2013 ◽  
Vol 3 (1) ◽  
Author(s):  
Victor Chabot ◽  
Brian Kim ◽  
Brent Sloper ◽  
Costas Tzoganakis ◽  
Aiping Yu
Keyword(s):  
Gum Arabic ◽  
High Yield ◽  
Layer Graphene ◽  
Yield Production ◽  
Few Layer Graphene ◽  
High Yield Production

Few-layer graphene oxide with high yield via efficient surfactant-assisted exfoliation of mildly-oxidized graphite

2019 ◽  
Vol 494 ◽  
pp. 1100-1108 ◽  
Author(s):  
Yang Hu ◽  
Min Su ◽  
Xin Xie ◽  
Chunbao Sun ◽  
Jue Kou
Keyword(s):  
Graphene Oxide ◽  
High Yield ◽  
Layer Graphene ◽  
Oxidized Graphite ◽  
Few Layer Graphene ◽  
Surfactant Assisted

scholarly journals THE PERFORMANCE OF GREEN SYNTHESIS OF GRAPHENE OXIDE PREPARED BY MODIFIED HUMMERS METHOD WITH OXIDATION TIME VARIATION

2021 ◽  
Vol 14 (03) ◽  
pp. 2017-2023
Author(s):  
U. Chasanah ◽  
W. Trisunaryanti ◽  
Triyono ◽  
H.S. Oktaviano ◽  
D.A Fatmawati
Keyword(s):  
Graphene Oxide ◽  
Green Synthesis ◽  
Time Variation ◽  
Oxidation Time ◽  
Hummers Method ◽  
Modified Hummers Method

Safer modified Hummers’ method for the synthesis of graphene oxide with high quality and high yield

2020 ◽  
Vol 6 (12) ◽  
pp. 125631 ◽  
Author(s):  
Guillermo Santamaría-Juárez ◽  
Estela Gómez-Barojas ◽  
Enrique Quiroga-González ◽  
Enrique Sánchez-Mora ◽  
Mildred Quintana-Ruiz ◽  
...  
Keyword(s):  
Graphene Oxide ◽  
High Yield ◽  
High Quality ◽  
Hummers Method ◽  
Modified Hummers Method

scholarly journals Preparation of Few-Layer Graphene Dispersions from Hydrothermally Expanded Graphite

2019 ◽  
Vol 9 (12) ◽  
pp. 2539 ◽  
Author(s):  
Cristian Vacacela Gomez ◽  
Talia Tene ◽  
Marco Guevara ◽  
Gabriela Tubon Usca ◽  
Dennys Colcha ◽  
...  
Keyword(s):  
Aqueous Solution ◽  
Expanded Graphite ◽  
Hexadecyltrimethylammonium Bromide ◽  
Natural Graphite ◽  
Layer Graphene ◽  
Novel Approach ◽  
Long Time ◽  
Few Layer Graphene ◽  
Scalable Production ◽  
Surfactant Aqueous Solution

In this study, we propose a novel approach to prepare few-layer graphene (FLG) dispersions, which is realized by exfoliating natural graphite flakes in a surfactant aqueous solution under hydrothermal treatment and liquid-phase exfoliation. In order to obtain stable and well-dispersed FLG dispersions, pristine graphite is hydrothermally expanded in a hexadecyltrimethylammonium bromide (CTAB) aqueous solution at 180 °C for 15 h, followed by sonication up to 3 h. In comparison to long-time sonication methods, the present method is significantly efficient, and most importantly, does not involve the use of an oxidizing agent and hazardous media, which will make it more competent in the scalable production of graphene.

High-yield production of highly conductive graphene via reversible covalent chemistry

2015 ◽  
Vol 51 (14) ◽  
pp. 2806-2809 ◽  
Author(s):  
Zhe Ji ◽  
Ji Chen ◽  
Liang Huang ◽  
Gaoquan Shi
Keyword(s):  
Alder Reaction ◽  
Diels Alder ◽  
High Yield ◽  
High Quality ◽  
Layer Graphene ◽  
Diels Alder Reaction ◽  
Yield Production ◽  
Reversible Covalent ◽  
Few Layer Graphene ◽  
High Yield Production

A reversible covalent strategy based on the Diels–Alder reaction of graphite and tetracyanoethylene has been developed for the high-yield production of high-quality few-layer graphene.

High-Yield Synthesis of Few-Layer Graphene Flakes through Electrochemical Expansion of Graphite in Propylene Carbonate Electrolyte

2011 ◽  
Vol 133 (23) ◽  
pp. 8888-8891 ◽  
Author(s):  
Junzhong Wang ◽  
Kiran Kumar Manga ◽  
Qiaoliang Bao ◽  
Kian Ping Loh
Keyword(s):  
Propylene Carbonate ◽  
High Yield ◽  
Layer Graphene ◽  
Graphene Flakes ◽  
Few Layer Graphene
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