Coating carboxylic and sulfate functional groups on ZrO2 nanoparticles: Antifouling enhancement of nanocomposite membranes during water treatment

2018 ◽  
Vol 131 ◽  
pp. 299-314 ◽  
Author(s):  
Kamalodin Monsef ◽  
Maryam Homayoonfal ◽  
Fatemeh Davar
Keyword(s):  
Water Treatment ◽  
Functional Groups ◽  
Zro2 Nanoparticles ◽  
Nanocomposite Membranes

Photocatalytic and antimicrobial multifunctional nanocomposite membranes for emerging pollutants water treatment applications

Chemosphere ◽  
2020 ◽  
Vol 250 ◽  
pp. 126299 ◽  
Author(s):  
H. Salazar ◽  
P.M. Martins ◽  
Bruno Santos ◽  
M.M. Fernandes ◽  
Ander Reizabal ◽  
...  
Keyword(s):  
Water Treatment ◽  
Emerging Pollutants ◽  
Nanocomposite Membranes

scholarly journals Robust Polymer Nanocomposite Membranes Incorporating Discrete TiO2 Nanotubes for Water Treatment

Nanomaterials ◽  
2019 ◽  
Vol 9 (9) ◽  
pp. 1186 ◽  
Author(s):  
Mahdi ◽  
Kumar ◽  
Goswami ◽  
Perdicakis ◽  
Shankar ◽  
...  
Keyword(s):  
Organic Matter ◽  
Water Treatment ◽  
Oil Sands ◽  
Tio2 Nanotubes ◽  
Water Flux ◽  
Polymer Nanocomposite ◽  
Nanocomposite Membranes ◽  
Practical Applications ◽  
Modified Polymer ◽  
Pes Membrane

Polyethersulfone (PES) is a polymeric permeable material used in ultrafiltration (UF) membranes due to its high thermomechanical and chemical stability. The hydrophobic nature of PES membranes renders them prone to fouling and restricts the practical applications of PES in the fabrication of water treatment membranes. The present study demonstrates a non-solvent-induced phase separation (NIPS) approach to modifying PES membranes with different concentrations of discrete TiO2 nanotubes (TNTs). Zeta potential and contact angle measurements showed enhanced hydrophilicity and surface negative charge in TNTs/PES nanocomposite membranes compared to unmodified PES membranes. To discern the antifouling and permeation properties of the TNTs/PES membranes, steam assisted gravity drainage (SAGD) wastewater obtained from the Athabasca oil sands of Alberta was used. The TiO2 modified polymer nanocomposite membranes resulted in a higher organic matter rejection and water flux than the unmodified PES membrane. The addition of discrete TNTs at 1 wt% afforded maximum water flux (82 L/m2 h at 40 psi), organic matter rejection (53.9%), and antifouling properties (29% improvement in comparison to pristine PES membrane). An enhancement in fouling resistance of TNTs/PES nanocomposite membranes was observed in flux recovery ratio experiments.

scholarly journals The Effect of Sulfated Zirconia and Zirconium Phosphate Nanocomposite Membranes on Fuel Cell Efficiency

2021 ◽  
Author(s):  
Rudzani Sigwadi ◽  
Touhami Mokrani ◽  
Phumlani Msomi ◽  
Fulufhelo Nemavhola
Keyword(s):  
Fuel Cell ◽  
Proton Conductivity ◽  
Water Uptake ◽  
Zro2 Nanoparticles ◽  
Gravimetric Analysis ◽  
X Ray Diffraction ◽  
Nanocomposite Membranes ◽  
Fuel Cell Performance ◽  
Cell Efficiency ◽  
Thermal Deterioration

To investigate the effect of acidic nanoparticles on proton conductivity, permeability and fuel cell performance, a commercial Nafion® 117 membrane was impregnated with zirconium phosphates (ZrP) and sulfated zirconium (S-ZrO2) nanoparticles. The tensile test, water uptake, methanol crossover, Fourier-transform infrared spectroscopy (FTIR), X-ray diffraction (XRD), Thermal gravimetric analysis (TGA) and Scanning Electron Microscopy (SEM) were used to assess the ca-pacity of nanocomposite membrane to function in a fuel cell. The modified Nafion® membrane obtained the higher water uptake and a lower water content angle than the commercial Nafion® 117 membrane, indicating that it has a greater impact on conductivity. Under strain rates of 40, 30 and 20 mm/min, the nanocomposite membranes demonstrate more stable thermal deterioration and higher mechanical strength, which offers tremendous promise for fuel cell applications. When compared to 0.113 S/cm and 0.013 S/cm, respectively, of commercial Nafion® 117 and Nafion® ZrP membranes, the modified Nafion® membrane with ammonia sulphate acid had the highest proton conductivity of 7.891 S/cm. When tested using a direct single cell methanol fuel cell, it had the highest power density of 183 m. cm-2 which is better than commercial Nafion® 117 and Nafion® ZrP membranes.

Potential of bioinspired cellulose nanomaterials and nanocomposite membranes thereof for water treatment and fuel cell applications

Cellulose ◽  
2020 ◽  
Vol 27 (12) ◽  
pp. 6719-6746
Author(s):  
Rikarani R. Choudhury ◽  
Sambit Kumar Sahoo ◽  
Jaydevsinh M. Gohil
Keyword(s):  
Fuel Cell ◽  
Water Treatment ◽  
Nanocomposite Membranes ◽  
Cellulose Nanomaterials

Surface modification route to prepare novel polyamide@NH2_MIL-88B nanocomposite membranes for water treatment

RSC Advances ◽  
2016 ◽  
Vol 6 (75) ◽  
pp. 71250-71261 ◽  
Author(s):  
Luying Wang ◽  
Suxia Duan ◽  
Manquan Fang ◽  
Jing Liu ◽  
Jing He ◽  
...  
Keyword(s):  
Surface Modification ◽  
Water Treatment ◽  
Nanocomposite Membrane ◽  
Nanocomposite Membranes

A surface modification route is used to fabricate a novel PA nanocomposite membrane with a PA coating on a NH2_MIL-88B interlayer.

NMR investigation on nanocomposite membranes based on organosilica layered materials bearing different functional groups for PEMFCs

2017 ◽  
Vol 42 (46) ◽  
pp. 27940-27949 ◽  
Author(s):  
Isabella Nicotera ◽  
Cataldo Simari ◽  
Lamprini G. Boutsika ◽  
Luigi Coppola ◽  
Konstantinos Spyrou ◽  
...  
Keyword(s):  
Functional Groups ◽  
Layered Materials ◽  
Nanocomposite Membranes
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