scholarly journals Etching and acidifying graphene oxide membranes to increase gas permeance while retaining molecular sieving ability

AIChE Journal ◽  
2020 ◽  
Vol 66 (12) ◽  
Author(s):  
Liang Huang ◽  
Weiguang Jia ◽  
Haiqing Lin
Keyword(s):  
Graphene Oxide ◽  
Oxide Membranes ◽  
Molecular Sieving ◽  
Graphene Oxide Membranes

scholarly journals Strict molecular sieving over electrodeposited 2D-interspacing-narrowed graphene oxide membranes

2017 ◽  
Vol 8 (1) ◽  
Author(s):  
Benyu Qi ◽  
Xiaofan He ◽  
Gaofeng Zeng ◽  
Yichang Pan ◽  
Guihua Li ◽  
...  
Keyword(s):  
Graphene Oxide ◽  
Oxide Membranes ◽  
Molecular Sieving ◽  
Graphene Oxide Membranes

Molecular Perspective of Radionuclides Separation by Nanoporous Graphene Oxide Membrane

2016 ◽  
Vol 11 (1) ◽  
pp. 3-5 ◽  
Author(s):  
Masoud Arabieh ◽  
S. Mahmood Fatemi ◽  
Hamid Sepehrian
Keyword(s):  
Graphene Oxide ◽  
Md Simulation ◽  
Oil Industry ◽  
Diffusion Flow ◽  
Nanoporous Graphene ◽  
Gas Molecules ◽  
Oxide Membrane ◽  
Oxide Membranes ◽  
Molecular Sieving ◽  
Graphene Oxide Membranes

Abstract Graphene-derived membranes has gained much interest recently due to its promising potential in filtration and separation applications. Molecular Sieving phenomena of gas molecules in the interlayer of graphene oxide nanopore have been investigated using molecular dynamic (MD) simulation. We explore I-129 gas radionuclides sequestration from natural air in nanoporous graphene oxide membranes in which different sizes and geometries of pores were modeled on the graphene oxide sheet. In the present work, mean-squared displacement (MSD), diffusion, flow of gas and the number of crossed gas molecules through graphene oxide nanopore membrane have been calculated and the results showed, selective proper nanopores in graphene oxide membrane could dramatically improve separation. The aim of this paper is to show that for the well-defined pore size called P-12, it is possible to separate I-129 from a gas mixture containing I-129, O2 and N2. The results would be benefited by the oil industry and others.

scholarly journals Precise and Ultrafast Molecular Sieving Through Graphene Oxide Membranes

Science ◽  
2014 ◽  
Vol 343 (6172) ◽  
pp. 752-754 ◽  
Author(s):  
R. K. Joshi ◽  
P. Carbone ◽  
F. C. Wang ◽  
V. G. Kravets ◽  
Y. Su ◽  
...  
Keyword(s):  
Graphene Oxide ◽  
Oxide Membranes ◽  
Molecular Sieving ◽  
Graphene Oxide Membranes

scholarly journals Recent Advances in Graphene Oxide Membranes for Gas Separation Applications

2019 ◽  
Vol 20 (22) ◽  
pp. 5609 ◽  
Author(s):  
Saif Khan Alen ◽  
SungWoo Nam ◽  
Seyed A. Dastgheib
Keyword(s):  
Graphene Oxide ◽  
Gas Separation ◽  
High Performance ◽  
Separation Performance ◽  
Narrow Pore Size Distribution ◽  
Different Types ◽  
Oxide Membranes ◽  
Molecular Sieving ◽  
Gas Separation Performance ◽  
Graphene Oxide Membranes

Graphene oxide (GO) can dramatically enhance the gas separation performance of membrane technologies beyond the limits of conventional membrane materials in terms of both permeability and selectivity. Graphene oxide membranes can allow extremely high fluxes because of their ultimate thinness and unique layered structure. In addition, their high selectivity is due to the molecular sieving or diffusion effect resulting from their narrow pore size distribution or their unique surface chemistry. In the first part of this review, we briefly discuss different mechanisms of gas transport through membranes, with an emphasis on the proposed mechanisms for gas separation by GO membranes. In the second part, we review the methods for GO membrane preparation and characterization. In the third part, we provide a critical review of the literature on the application of different types of GO membranes for CO2, H2, and hydrocarbon separation. Finally, we provide recommendations for the development of high-performance GO membranes for gas separation applications.

Ultrathin, Molecular-Sieving Graphene Oxide Membranes for Selective Hydrogen Separation

Science ◽  
2013 ◽  
Vol 342 (6154) ◽  
pp. 95-98 ◽  
Author(s):  
Hang Li ◽  
Zhuonan Song ◽  
Xiaojie Zhang ◽  
Yi Huang ◽  
Shiguang Li ◽  
...  
Keyword(s):  
Graphene Oxide ◽  
High Selectivity ◽  
Structural Defects ◽  
Microporous Membranes ◽  
Filtration Process ◽  
Mixture Separation ◽  
20 Nm ◽  
Oxide Membranes ◽  
Molecular Sieving ◽  
Graphene Oxide Membranes

Ultrathin, molecular-sieving membranes have great potential to realize high-flux, high-selectivity mixture separation at low energy cost. Current microporous membranes [pore size < 1 nanometer (nm)], however, are usually relatively thick. With the use of current membrane materials and techniques, it is difficult to prepare microporous membranes thinner than 20 nm without introducing extra defects. Here, we report ultrathin graphene oxide (GO) membranes, with thickness approaching 1.8 nm, prepared by a facile filtration process. These membranes showed mixture separation selectivities as high as 3400 and 900 for H2/CO2 and H2/N2 mixtures, respectively, through selective structural defects on GO.

Enhanced photo-driven ion pump through silver nanoparticles decorated graphene oxide membranes

Nano Research ◽  
2021 ◽  
Author(s):  
Yaping Feng ◽  
Haoyu Dai ◽  
Yi Zhang ◽  
Jianjun Chen ◽  
Fengxiang Chen ◽  
...  
Keyword(s):  
Silver Nanoparticles ◽  
Graphene Oxide ◽  
Ion Pump ◽  
Oxide Membranes ◽  
Graphene Oxide Membranes

Electrically Controlled Thermal Radiation from Reduced Graphene Oxide Membranes

2021 ◽  
Author(s):  
Zhaolong Chen ◽  
Kou Yang ◽  
Tongfeng Xian ◽  
Coskun Kocabas ◽  
Sergei V. Morozov ◽  
...  
Keyword(s):  
Graphene Oxide ◽  
Thermal Radiation ◽  
Reduced Graphene Oxide ◽  
Reduced Graphene ◽  
Oxide Membranes ◽  
Graphene Oxide Membranes
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