scholarly journals Polysulfone nanofiltration membranes enriched with functionalized graphene oxide for dye removal from wastewater

2020 ◽  
Vol 40 (10) ◽  
pp. 833-841
Author(s):  
Ahmed E. Abdelhamid ◽  
Ahmed A. El-Sayed ◽  
Ahmed M. Khalil
Keyword(s):  
Graphene Oxide ◽  
Dye Removal ◽  
Aqueous Media ◽  
Water Flux ◽  
Composite Membranes ◽  
Functionalized Graphene ◽  
Nanofiltration Membranes ◽  
Functionalized Graphene Oxide ◽  
Membrane Matrix ◽  
Dye Rejection

AbstractComposite-nanofiltration membranes based on polysulfone (PSU) and functionalized graphene oxide (f-GO) were prepared for dye removal from aqueous media. Graphene oxide (GO) was introduced to enhance the performance of these membranes. GO was functionalized using an aminated heterocyclic compound, namely 6-amino-4-(4-nitrophenyl)-3-methyl-4-phenyl-4,7-dihydro-1H-pyrazolo-[3,4-b]pyridine-5carbonitrile. The f-GO was incorporated into the PSU membrane matrix in different weight ratios (0.25, 0.5, 1, 2 and 4 wt %). Characterizing the produced membranes with scanning electron microscope, Fourier Transform Infrared - Attenuated Total Reflectance (FTIR-ATR) and X-ray diffraction indicated the well dispersion of f-GO in the membrane matrix. The obtained membranes were applied to remove Congo red and methylene blue, as typical anionic and cationic dyes respectively from water. The modified membranes showed superior efficiency in terms of water flux and dye rejection upon being compared with the control membrane. The composite membranes loaded with f-GO exhibited promising dye removal efficiency for both dyes.

scholarly journals Enhancing the performance of thin-film nanocomposite nanofiltration membranes using MAH-modified GO nanosheets

RSC Advances ◽  
2017 ◽  
Vol 7 (86) ◽  
pp. 54898-54910 ◽  
Author(s):  
Quanling Xie ◽  
Wenyao Shao ◽  
Shishen Zhang ◽  
Zhuan Hong ◽  
Qiuquan Wang ◽  
...  
Keyword(s):  
Thin Film ◽  
Graphene Oxide ◽  
Maleic Anhydride ◽  
Interfacial Polymerization ◽  
Water Flux ◽  
Functionalized Graphene ◽  
Nanofiltration Membranes ◽  
Functionalized Graphene Oxide ◽  
Salt Rejection ◽  
Thin Film Nanocomposite

In this work, novel thin-film nanocompostie NF membranes were developed through modification with maleic anhydride functionalized graphene oxideviainterfacial polymerization, which showed the enhanced water flux with retaining high salt rejection.

scholarly journals Investigating the Antibacterial Activity of Polymeric Membranes Fabricated with Aminated Graphene Oxide

Membranes ◽  
2021 ◽  
Vol 11 (7) ◽  
pp. 510
Author(s):  
Muhammad Zahid ◽  
Saba Akram ◽  
Anum Rashid ◽  
Zulfiqar Ahmad Rehan ◽  
Talha Javed ◽  
...  
Keyword(s):  
Antibacterial Activity ◽  
Graphene Oxide ◽  
Mechanical Stability ◽  
Water Flux ◽  
Composite Membranes ◽  
Inversion Method ◽  
Cellulose Acetate Membrane ◽  
Functionalized Graphene Oxide ◽  
And Performance ◽  
Phase Inversion Method

A novel, functionalized graphene oxide–based cellulose acetate membrane was fabricated using the phase inversion method to improve the membrane characteristics and performance. We studied the effect of aminated graphene oxide (NH2–GO) composite on the CA membrane characteristics and performance in terms of membrane chemistry, hydrophilicity, thermal and mechanical stability, permeation flux, and antibacterial activity. The results of contact angle and water flux indicate the improved hydrophilic behavior of composite membranes in comparison to that of the pure CA membrane. The AGO-3 membrane showed the highest water flux of about 153 Lm−2h−1. The addition of hydrophilic AGO additive in CA membranes enhanced the antibacterial activity of AGO–CA membranes, and the thermal stability of the resulting membrane also improved since it increases the Tg value in comparison to that of a pristine CA membrane. The aminated graphene oxide (NH2–GO) was, therefore, found to be a promising additive for the fabrication of composite membranes with potent applications in wastewater treatment.

Enhancing the CO2 separation performance of composite membranes by the incorporation of amino acid-functionalized graphene oxide

2015 ◽  
Vol 3 (12) ◽  
pp. 6629-6641 ◽  
Author(s):  
Qingping Xin ◽  
Zhao Li ◽  
Congdi Li ◽  
Shaofei Wang ◽  
Zhongyi Jiang ◽  
...  
Keyword(s):  
Graphene Oxide ◽  
Amino Acid ◽  
Composite Membranes ◽  
Co2 Separation ◽  
Separation Performance ◽  
Functionalized Graphene ◽  
Functionalized Graphene Oxide ◽  
Graphene Oxide Nanosheet

Amino acid-functionalized graphene oxide nanosheet-incorporated composite membranes significantly enhanced the CO2/CH4(N2) diffusivity, reactivity and solubility selectivities.

Enhanced desalination performance of carboxyl functionalized graphene oxide nanofiltration membranes

Desalination ◽  
2017 ◽  
Vol 405 ◽  
pp. 29-39 ◽  
Author(s):  
Yiqing Yuan ◽  
Xueli Gao ◽  
Yi Wei ◽  
Xinyan Wang ◽  
Jian Wang ◽  
...  
Keyword(s):  
Graphene Oxide ◽  
Functionalized Graphene ◽  
Nanofiltration Membranes ◽  
Functionalized Graphene Oxide

8-Hydroxyquinoline Functionalized Graphene Oxide: an Efficient Fluorescent Nanosensor for Zn2+ in Aqueous Media

2018 ◽  
Vol 28 (5) ◽  
pp. 1173-1180 ◽  
Author(s):  
Bagher Eftekhari-Sis ◽  
Zahra Rezazadeh ◽  
Ali Akbari ◽  
Mojtaba Amini
Keyword(s):  
Graphene Oxide ◽  
Aqueous Media ◽  
Functionalized Graphene ◽  
Functionalized Graphene Oxide
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