Liquid Crystalline and Shear-Induced Properties of an Aqueous Solution of Graphene Oxide Sheets

Langmuir ◽  
2013 ◽  
Vol 29 (25) ◽  
pp. 8103-8107 ◽  
Author(s):  
Xiaoming Yang ◽  
Chengxin Guo ◽  
Liangliang Ji ◽  
Yaowen Li ◽  
Yingfeng Tu
Keyword(s):  
Aqueous Solution ◽  
Graphene Oxide ◽  
Liquid Crystalline ◽  
Graphene Oxide Sheets

Synthesis and characterization of polymer grafted graphene oxide sheets using a Ce(IV)/HNO3 redox system in an aqueous solution

Carbon ◽  
2013 ◽  
Vol 53 ◽  
pp. 269-276 ◽  
Author(s):  
Lijun Ma ◽  
Xiaoming Yang ◽  
Lingfeng Gao ◽  
Min Lu ◽  
Chengxin Guo ◽  
...  
Keyword(s):  
Aqueous Solution ◽  
Graphene Oxide ◽  
Redox System ◽  
Synthesis And Characterization ◽  
Graphene Oxide Sheets

scholarly journals Optical properties of ablated graphene oxide in aqueous dispersions

2020 ◽  
Vol 99 (3) ◽  
pp. 6-12
Author(s):  
E.V. Seliverstova ◽  
◽  
N.Kh. Ibrayev ◽  
D.A. Temirbayeva ◽  
G.S. Omarova ◽  
...  
Keyword(s):  
Aqueous Solution ◽  
Optical Properties ◽  
Graphene Oxide ◽  
Laser Radiation ◽  
Laser Ablation ◽  
Graphene Quantum Dots ◽  
Luminescent Materials ◽  
Structural And Optical Properties ◽  
Aqueous Dispersions ◽  
Graphene Oxide Sheets

The effect of laser radiation on the structural and optical properties of graphene oxide dispersed in water was studied. It was shown that under laser ablation a significant reduction in the size of graphene oxide sheets can be achieved. In this case, the resulting main parts of particles have a size of about 110–120 nm, and are similar to graphene quantum dots. The Raman spectra indicate the reduction of graphene oxide during laser radiation. The thickness of the formed particles practically was not changed, since the ID/IG ratio has close values. The prepared dispersions of graphene oxide exhibit wide luminescence bands in the region of 400–600 nm with a maximum of about 450 nm and a lifetime of 1.6 ns. It was shown that by laser ablation it is possible to achieve a significant increasing in the luminescent ability of graphene oxide in an aqueous solution. In this case, the luminescence intensity increased by almost 2 times, while the optical density of the solution was increased by only 5 % relative to the initial dispersion. The results can be used to create organic luminescent materials, in optical nanotechnology, as well as in photovoltaics, biophysics and bioimaging.

Self-supported 3D reduced graphene oxide for solid-phase extraction: An efficient and low-cost sorbent for environmental contaminants in aqueous solution

Talanta ◽  
2021 ◽  
pp. 122750
Author(s):  
Raimara de Souza Gomes ◽  
Anderson Thesing ◽  
Jacqueline Ferreira Leite Santos ◽  
Andreia Neves Fernandes
Keyword(s):  
Aqueous Solution ◽  
Graphene Oxide ◽  
Solid Phase Extraction ◽  
Reduced Graphene Oxide ◽  
Solid Phase ◽  
Low Cost ◽  
Environmental Contaminants ◽  
Phase Extraction ◽  
Reduced Graphene

Cross-linked graphene oxide sheets via modified extracted cellulose with high metal adsorption

2017 ◽  
Vol 172 ◽  
pp. 20-27 ◽  
Author(s):  
Amr A. Yakout ◽  
Ramadan H. El-Sokkary ◽  
Mohamed A. Shreadah ◽  
Omnia G. Abdel Hamid
Keyword(s):  
Graphene Oxide ◽  
Metal Adsorption ◽  
High Metal ◽  
Graphene Oxide Sheets

scholarly journals Transformation of hydroquinone to benzoquinone mediated by reduced graphene oxide in aqueous solution

Carbon ◽  
2015 ◽  
Vol 89 ◽  
pp. 74-81 ◽  
Author(s):  
Chunmei Li ◽  
Lingyun Li ◽  
Lixiang Sun ◽  
Zhiguo Pei ◽  
Jieli Xie ◽  
...  
Keyword(s):  
Aqueous Solution ◽  
Graphene Oxide ◽  
Reduced Graphene Oxide ◽  
Reduced Graphene

Investigation of Raman and photoluminescence studies of reduced graphene oxide sheets

2011 ◽  
Vol 106 (3) ◽  
pp. 501-506 ◽  
Author(s):  
Karthikeyan Krishnamoorthy ◽  
Murugan Veerapandian ◽  
Rajneesh Mohan ◽  
Sang-Jae Kim
Keyword(s):  
Graphene Oxide ◽  
Reduced Graphene Oxide ◽  
Reduced Graphene ◽  
Photoluminescence Studies ◽  
Graphene Oxide Sheets

Advances in Graphene for Adsorption of Heavy Metals in Wastewater

2012 ◽  
Vol 550-553 ◽  
pp. 2121-2124 ◽  
Author(s):  
Ling Ling Luo ◽  
Xing Xing Gu ◽  
Jun Wu ◽  
Shu Xian Zhong ◽  
Jian Rong Chen
Keyword(s):  
Waste Water ◽  
Heavy Metals ◽  
Aqueous Solution ◽  
Graphene Oxide ◽  
Physical Structure ◽  
High Specific Surface Area ◽  
Functionalized Graphene ◽  
Storage Material ◽  
Energy Storage Material ◽  
Material Composite

Graphene for its unique physical structure, excellent mechanical, electrical and physical properties has been widely applied in nanoelectronics, microelectronics, energy storage material, composite materials and so on. In recent years, many researchers found graphene have outstanding adsorption capacity of contaminants in aqueous solution due to its high specific surface area. This paper summarized the graphene, graphene oxide and functionalized graphene removing various heavy metals in waste water.

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