Emerging investigators series: silica-crosslinked graphene oxide membrane and its unique capability in removing neutral organic molecules from water

2016 ◽  
Vol 2 (4) ◽  
pp. 717-725 ◽  
Author(s):  
Sunxiang Zheng ◽  
Baoxia Mi
Keyword(s):  
Graphene Oxide ◽  
Organic Molecules ◽  
Ionic Species ◽  
Oxide Membrane ◽  
Unique Capability

A new graphene oxide (GO) membrane was synthesized by crosslinking GO nanosheets via silica. This membrane was found to remove neutral organic molecules much more efficiently than negatively charged ionic species.

Performance evaluation of reduced graphene oxide membrane doped with polystyrene sulfonic acid for forward osmosis process

2021 ◽  
Vol 44 ◽  
pp. 101093
Author(s):  
Priyamjeet Deka ◽  
Vishal Kumar Verma ◽  
Bonita Yurembam ◽  
Arindom Bikash Neog ◽  
Kalyan Raidongia ◽  
...  
Keyword(s):  
Graphene Oxide ◽  
Performance Evaluation ◽  
Reduced Graphene Oxide ◽  
Sulfonic Acid ◽  
Forward Osmosis ◽  
Reduced Graphene ◽  
Polystyrene Sulfonic Acid ◽  
Oxide Membrane

Oscillation in the electrical conductivity of a thick graphene oxide membrane

2021 ◽  
Vol 129 (23) ◽  
pp. 235105
Author(s):  
L. Jamilpanah ◽  
M. Alihosseini ◽  
S. Ghasemi ◽  
N. Hassani ◽  
F. Peymanirad ◽  
...  
Keyword(s):  
Electrical Conductivity ◽  
Graphene Oxide ◽  
Oxide Membrane

Polyacrylic acid-brushes tethered to graphene oxide membrane coating for scaling and biofouling mitigation on reverse osmosis membranes

2021 ◽  
pp. 119308
Author(s):  
Ali Ansari ◽  
Janire Peña-Bahamonde ◽  
Meng Wang ◽  
Devin L. Shaffer ◽  
Yandi Hu ◽  
...  
Keyword(s):  
Graphene Oxide ◽  
Reverse Osmosis ◽  
Polyacrylic Acid ◽  
Membrane Coating ◽  
Oxide Membrane ◽  
Reverse Osmosis Membranes

Fabrication of Graphene Oxide Membrane with Multiple “Plug-ins” for Efficient Dye Nanofiltration

2021 ◽  
pp. 119504
Author(s):  
Jia Pang ◽  
Xiaolei Cui ◽  
Yang Feng ◽  
Zhenji Guo ◽  
Guodong Kong ◽  
...  
Keyword(s):  
Graphene Oxide ◽  
Oxide Membrane

Dual-site supported graphene oxide membrane with enhanced permeability and selectivity

2021 ◽  
pp. 120223
Author(s):  
Long Tian ◽  
Nigel Graham ◽  
Ting Liu ◽  
Kening Sun ◽  
Wenzheng Yu
Keyword(s):  
Graphene Oxide ◽  
Oxide Membrane ◽  
Dual Site

Insight into the Nanoscale Mechanism of Rapid H2O Transport within a Graphene Oxide Membrane: Impact of Oxygen Functional Group Clustering

2015 ◽  
Vol 8 (1) ◽  
pp. 321-332 ◽  
Author(s):  
Shuai Ban ◽  
Jing Xie ◽  
Yajun Wang ◽  
Bo Jing ◽  
Bei Liu ◽  
...  
Keyword(s):  
Graphene Oxide ◽  
Functional Group ◽  
Oxygen Functional Group ◽  
Oxide Membrane ◽  
Insight Into

scholarly journals Porous Medium Equation in Graphene Oxide Membrane: Nonlinear Dependence of Permeability on Pressure Gradient Explained

Membranes ◽  
2021 ◽  
Vol 11 (9) ◽  
pp. 665
Author(s):  
Lukáš Mrazík ◽  
Pavel Kříž
Keyword(s):  
Porous Medium ◽  
Graphene Oxide ◽  
Governing Equation ◽  
Pressure Difference ◽  
Gas Permeability ◽  
Porous Medium Equation ◽  
Gas Permeation ◽  
Nonlinear Dependence ◽  
Medium Equation ◽  
Oxide Membrane

Membrane performance in gas separation is quantified by its selectivity, determined as a ratio of measured gas permeabilities of given gases at fixed pressure difference. In this manuscript a nonlinear dependence of gas permeability on pressure difference observed in the measurements of gas permeability of graphene oxide membrane on a manometric integral permeameter is reported. We show that after reasoned assumptions and simplifications in the mathematical description of the experiment, only static properties of any proposed governing equation can be studied, in order to analyze the permeation rate for different pressure differences. Porous Medium Equation is proposed as a suitable governing equation for the gas permeation, as it manages to predict a nonlinear behavior which is consistent with the measured data. A coefficient responsible for the nonlinearity, the polytropic exponent, is determined to be gas-specific—implications on selectivity are discussed, alongside possible hints to a deeper physical interpretation of its actual value.

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