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.

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.

General and Biomimetic Approach to Biopolymer-Functionalized Graphene Oxide Nanosheet through Adhesive Dopamine

2012 ◽  
Vol 13 (12) ◽  
pp. 4236-4246 ◽  
Author(s):  
Chong Cheng ◽  
Shuang Li ◽  
Shengqiang Nie ◽  
Weifeng Zhao ◽  
Hang Yang ◽  
...  
Keyword(s):  
Graphene Oxide ◽  
Functionalized Graphene ◽  
Functionalized Graphene Oxide ◽  
Graphene Oxide Nanosheet ◽  
Biomimetic Approach

scholarly journals Visible-light-driven photocatalytic degradation of safranin-T dye using functionalized graphene oxide nanosheet (FGS)/ZnO nanocomposites

RSC Advances ◽  
2018 ◽  
Vol 8 (35) ◽  
pp. 19659-19667 ◽  
Author(s):  
Bhavani P. Nenavathu ◽  
Syam Kandula ◽  
Swati Verma
Keyword(s):  
Photocatalytic Activity ◽  
Graphene Oxide ◽  
Visible Light ◽  
Functionalized Graphene ◽  
Functionalized Graphene Oxide ◽  
Excellent Photocatalytic Activity ◽  
Graphene Oxide Nanosheet ◽  
Visible Light Driven ◽  
Solution Route ◽  
Safranin T

FGS/ZnO NCs with excellent photocatalytic activity towards photodegradation of safranin-T have been synthesized via a facile and economical solution route.

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