High-Flux, Antifouling Hydrophilized Ultrafiltration Membranes with Tunable Charge Density Combining Sulfonated Poly(ether sulfone) and Aminated Graphene Oxide Nanohybrid

2019 ◽  
Vol 12 (1) ◽  
pp. 1617-1627 ◽  
Author(s):  
Mahendra Kumar ◽  
Nurshaun Sreedhar ◽  
Maguy Abi Jaoude ◽  
Hassan A. Arafat
Keyword(s):  
Graphene Oxide ◽  
Charge Density ◽  
High Flux ◽  
Ultrafiltration Membranes ◽  
Sulfonated Poly

Fouling resistant, high flux, charge tunable hybrid ultrafiltration membranes using polymer chains grafted graphene oxide for NOM removal

2020 ◽  
pp. 127300
Author(s):  
Mahendra Kumar ◽  
Hanaa M. Baniowda ◽  
N. Sreedhar ◽  
Efrem Curcio ◽  
Hassan A. Arafat
Keyword(s):  
Graphene Oxide ◽  
Polymer Chains ◽  
High Flux ◽  
Ultrafiltration Membranes ◽  
Flux Charge

scholarly journals Quaternized polysulfone and graphene oxide nanosheet derived low fouling novel positively charged hybrid ultrafiltration membranes for protein separation

RSC Advances ◽  
2015 ◽  
Vol 5 (63) ◽  
pp. 51208-51219 ◽  
Author(s):  
Mahendra Kumar ◽  
Declan McGlade ◽  
Mathias Ulbricht ◽  
Jenny Lawler
Keyword(s):  
Graphene Oxide ◽  
Charge Density ◽  
Cross Section ◽  
Protein Separation ◽  
Solution Casting ◽  
Ultrafiltration Membranes ◽  
Sem Image ◽  
Graphene Oxide Nanosheet ◽  
Uf Membranes ◽  
Positively Charged

Low fouling positively charged hybrid UF membranes with adjustable charge density fabricated from a blend of PSf/QPSf and GO nanosheets by solution casting and NIPS method. Cross-section SEM image and observed lysozyme transport values at varied pH.

scholarly journals Polyethersulfone/Graphene Oxide Ultrafiltration Membranes from Solutions in Ionic Liquid

MRS Advances ◽  
2017 ◽  
Vol 2 (46) ◽  
pp. 2505-2511 ◽  
Author(s):  
Dinesh. K. Mahalingam ◽  
DooLi. Kim ◽  
Suzana. P. Nunes
Keyword(s):  
Graphene Oxide ◽  
Dimethyl Formamide ◽  
High Flux ◽  
Ultrafiltration Membranes ◽  
Cross Sectional ◽  
Selective Layer ◽  
Trade Off ◽  
Angle Measurements ◽  
Contact Angle Measurements ◽  
Microscopy Images

ABSTRACTNovel high flux polyethersulfone (PES) ultrafiltration membranes were fabricated by incorporating different amounts of graphene oxide (GO) sheets to PES as nanofillers. The membranes were prepared from solutions in 50/50 1-ethyl-3-methylimidazolium-diethylphosphate/N,N-dimethyl formamide. It was observed that the water permeance increased from 550 to 800 L m-2h-1bar-1, with incorporation of 1 wt% GO, keeping a molecular weight cut-off (MWCO) of approximately 32-34 kg mol-1. Cross-sectional scanning electron microscopy images of GO/PES membranes showed the formation of ultrathin selective layer unlike pristine membranes. Contact angle measurements confirmed the increase of hydrophilicity, by increasing the GO concentration. The rejection of humic acid and bovine serum albumin was demonstrated. The mechanical properties were improved, compared with the pristine membranes. The performance was just above the trade-off relationship between permeance and separation factor for PES membranes reported in the literature.

Fabrication of graphene oxide incorporated polyethersulfone hybrid ultrafiltration membranes for humic acid removal

2019 ◽  
Vol 223 ◽  
pp. 17-23 ◽  
Author(s):  
Mohammad Saad Algamdi ◽  
Ibrahim Hotan Alsohaimi ◽  
Jenny Lawler ◽  
Hazim M. Ali ◽  
Abdullah Mohammed Aldawsari ◽  
...  
Keyword(s):  
Graphene Oxide ◽  
Humic Acid ◽  
Ultrafiltration Membranes

Effect of Surface Charge Density of Graphene Oxide on Chemical Warfare Agent Simulants Blocking

2021 ◽  
pp. 152225
Author(s):  
Youna Kim ◽  
Moonhyun Choi ◽  
Jiwoong Heo ◽  
Sungwon Jung ◽  
Dongwon Ka ◽  
...  
Keyword(s):  
Graphene Oxide ◽  
Charge Density ◽  
Surface Charge ◽  
Surface Charge Density ◽  
Chemical Warfare Agent ◽  
Chemical Warfare ◽  
Effect Of Surface

Performance of Sulfonated Poly(Vinyl Alcohol)/Graphene Oxide Polyelectrolytes for Direct Methanol Fuel Cells

2020 ◽  
Vol 8 (7) ◽  
pp. 2000124
Author(s):  
Oscar Gil-Castell ◽  
Óscar Santiago ◽  
Borja Pascual-Jose ◽  
Emilio Navarro ◽  
Teresa J. Leo ◽  
...  
Keyword(s):  
Graphene Oxide ◽  
Fuel Cells ◽  
Vinyl Alcohol ◽  
Direct Methanol Fuel Cells ◽  
Poly Vinyl Alcohol ◽  
Direct Methanol ◽  
Methanol Fuel Cells ◽  
Sulfonated Poly

scholarly journals Nanoscale Charge Density and Dynamics in Graphene Oxide

2021 ◽  
pp. 1826-1831
Author(s):  
Elisa Palacios-Lidón ◽  
Jaime Colchero ◽  
Miguel Ortuno ◽  
Eduardo Colom ◽  
Ana M. Benito ◽  
...  
Keyword(s):  
Graphene Oxide ◽  
Charge Density
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