scholarly journals Influence of Oxidation Degree of Graphene Oxide on Its Nuclear Relaxivity and Contrast in MRI

ACS Omega ◽  
2020 ◽  
Vol 5 (35) ◽  
pp. 22131-22139
Author(s):  
Zinia Mohanta ◽  
Sumana K. Gaonkar ◽  
Manoj Kumar ◽  
Jitender Saini ◽  
Vivek Tiwari ◽  
...  
Keyword(s):  
Graphene Oxide ◽  
Oxidation Degree

Oxidation degree or sheet size: What really matters for the photothermal effect and ecotoxicity of graphene oxide?

FlatChem ◽  
2021 ◽  
Vol 26 ◽  
pp. 100231
Author(s):  
Caio C.C. Moreira ◽  
Ítalo A. Costa ◽  
Diego S. Moura ◽  
Cesar K. Grisolia ◽  
Carlos A.E.M. Leite ◽  
...  
Keyword(s):  
Graphene Oxide ◽  
Photothermal Effect ◽  
Oxidation Degree

Tailoring thermal conductivity of bulk graphene oxide by tuning the oxidation degree

2018 ◽  
Vol 29 (5) ◽  
pp. 711-715 ◽  
Author(s):  
Qing-Long Meng ◽  
Hengchang Liu ◽  
Zhiwei Huang ◽  
Shuang Kong ◽  
Peng Jiang ◽  
...  
Keyword(s):  
Thermal Conductivity ◽  
Graphene Oxide ◽  
Oxidation Degree

scholarly journals Influence of Oxidation Degree of Graphene Oxide on the Shear Rheology of Poly(ethylene glycol) Suspensions

Fluids ◽  
2020 ◽  
Vol 5 (2) ◽  
pp. 41 ◽  
Author(s):  
Yago Soares ◽  
Elyff Cargnin ◽  
Mônica Naccache ◽  
Ricardo Andrade
Keyword(s):  
Graphene Oxide ◽  
Rheological Behavior ◽  
Structural Characteristics ◽  
Rheological Characterization ◽  
Polymeric Liquid ◽  
Oxidation Degree ◽  
Force Microscopy ◽  
Fluid Behavior ◽  
Atomic Force ◽  
Poly Ethylene

This work studies the influence of the concentration and oxidation degree on the rheological behavior of graphene oxide (GO) nanosheets dispersed on polyethylene glycol (PEG). The rheological characterization was fulfilled in shear flow through rotational rheometry measurements, in steady, transient and oscillatory regimes. Graphene oxide was prepared by chemical exfoliation of graphite using the modified Hummers method. The morphological and structural characteristics originating from the synthesis were analyzed by X-ray diffraction, Raman spectroscopy, thermogravimetric analysis, Fourier transform infrared spectroscopy, and atomic force microscopy. It is shown that higher oxidation times increase the functional groups, which leads to a higher dispersion and exfoliation of GO sheets in the PEG. Moreover, the addition of GO in a PEG solution results in significant growth of the suspension viscosity, and a change of the fluid behavior from Newtonian to pseudoplastic. This effect is related to the concentration and oxidation level of the obtained GO particles. The results obtained aim to contribute towards the understanding of the interactions between the GO and the polymeric liquid matrix, and their influence on the suspension rheological behavior.

The Correlation Between Molecular Structure and Tribological Properties of Graphene Oxide with Different Oxidation Degree

2019 ◽  
Vol 67 (3) ◽  
Author(s):  
Lei Zhao ◽  
Hongmei Yang ◽  
Chang Liu ◽  
Shaoqing Xue ◽  
Zhao Deng ◽  
...  
Keyword(s):  
Molecular Structure ◽  
Graphene Oxide ◽  
Tribological Properties ◽  
Oxidation Degree

Effects of oxidation degree on photo-transformation and the resulting toxicity of graphene oxide in aqueous environment

2019 ◽  
Vol 249 ◽  
pp. 1106-1114 ◽  
Author(s):  
Fei-fei Zhao ◽  
Su-chun Wang ◽  
Zhi-lin Zhu ◽  
Shu-guang Wang ◽  
Fei-fei Liu ◽  
...  
Keyword(s):  
Graphene Oxide ◽  
Aqueous Environment ◽  
Oxidation Degree

Facile synthesis of highly favorable graphene oxide: Effect of oxidation degree on the structural, morphological, thermal and electrochemical properties

Materialia ◽  
2019 ◽  
Vol 6 ◽  
pp. 100344 ◽  
Author(s):  
Mohamad Fahrul Radzi Hanifah ◽  
Juhana Jaafar ◽  
M.H.D. Othman ◽  
A.F. Ismail ◽  
M.A. Rahman ◽  
...  
Keyword(s):  
Graphene Oxide ◽  
Electrochemical Properties ◽  
Facile Synthesis ◽  
Oxidation Degree
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