Metal ferrite incorporated polysulfone thin-film nanocomposite membranes for wastewater treatment

Nambikkattu, Jenny; Kaleekkal, Noel Jacob; Jacob, Joel Parayil

doi:10.1007/s11356-020-08024-8

Cited by 23 publications

(8 citation statements)

References 62 publications

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“…The applications of these materials are in sensing, storage and spintronic devices is due to the phenomena of mutual coupling (Sheikh et al, 2019). Annealing and composition are used to control the dialectic parameters like dialectic constant, tangent loss, AC conductivity and impedance (Al-Hilli, Li, & Kassim, 2012;Nambikkattu, Kaleekkal, & Jacob, 2020). The attention towards cobalt ferrites is given because of their tremendous uses in high electromagnetic, industrial and biomedical applications.…”

mentioning

confidence: 99%

Fabrication of Cerium Doped Nickel-Cobalt Ferrite by Co-Precipitation Method

Yasmeen,

Khan Asghar,

Gilani

et al. 2020

J. Mat. Phy.

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In the modern world researchers caught the attraction towards spinal ferrites. The current work is based on spinel ferrites having formula Ni0.5Co0.5CexFe2-xO4 where (x = 0.0, 0.05, 0.1, 0.15, 0.2) Prepared by co-precipitation method. The confirmation of spinal ferrite structure was done through XRD analysis. The crystallite size was found to be in the range of 8 to 11 nm. Lattice perimeter is observe to obey the increasing trend due to replacement of larger ionic radii of cerium with smaller ionic radii of iron. Koop's phenomenological theory, Maxwell–Wagner interfacial polarization and Vegard’s law is used to explain the behavior of lattice constant. The electrical properties of prepared ferrites were revealed by impedance analyzer. Various parameters like real and imaginary parts of dialectic constant, impedance and modulus was determined. In the frequency range of 1 to 3 GHz the detailed electrical inspection was done. During the electrode polarization the effect of grains on the increasing substitution of cerium was analyzed through real and imaginary parts of electrical modulus M' and M". In the frequency range of 3 GHz the value of M' is 2.1934 × 10-1 to 2.6581 × 10-1 and the value of M" is from 4.67 × 10-3 to 3.538 × 10-3. AC conductivity spectra shows a non-Debye relaxation behavior and it dependents of conductivity on frequency. The observed dielectric constant, dialectic loss and tangent loss are found to be decreasing with the increase in frequency. The investigation shows that real and imaginary impedance Z' and Z" was found to be decreasing on lower frequencies and on higher frequencies all the curves merge with each other. The value of Z' and Z" at 3GHz frequency is in the range of 8.02 × 10-3 to 0.6073 and 3.7641 × 101 to 4.5617 ×101 respectively. Increase in frequency increases the AC conductivity. The applications of prepared nanoparticles are suggested in high frequency devices because of the splendid dielectric properties of these particles.

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confidence: 99%

Fabrication of Cerium Doped Nickel-Cobalt Ferrite by Co-Precipitation Method

Yasmeen,

Khan Asghar,

Gilani

et al. 2020

J. Mat. Phy.

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“…Moreover, there are also the composite-type membranes containing three/multi components, such as ceramic-(different) ceramic-polymer, GO-CNT-polymer, carbon-ceramic-polymer MOF-carbonpolymer etc. [40], where the addition of MgFe2O4 enhanced hydrophilicity of the membrane, but did not influence the pore structure, thus resulting in an improvement of both flux and rejection simultaneously.…”

Section: Composite Membranesmentioning

confidence: 99%

“…Both enhancement of flux and rejection can be achieved by the composite membranes. For example, Nambikkattu et al improved both glucose flux and rejection simultaneously by addition of MgFe 2 O 4 on PSf membrane [ 40 ], where the addition of MgFe 2 O 4 enhanced hydrophilicity of the membrane, but did not influence the pore structure, thus resulting in an improvement of both flux and rejection simultaneously.…”

Section: Composite Membranesmentioning

confidence: 99%

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Ceramic-Polymer Composite Membranes for Water and Wastewater Treatment: Bridging the Big Gap between Ceramics and Polymers

Kotobuki

Zhang

et al. 2021

Molecules

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Clean water supply is an essential element for the entire sustainable human society, and the economic and technology development. Membrane filtration for water and wastewater treatments is the premier choice due to its high energy efficiency and effectiveness, where the separation is performed by passing water molecules through purposely tuned pores of membranes selectively without phase change and additional chemicals. Ceramics and polymers are two main candidate materials for membranes, where the majority has been made of polymeric materials, due to the low cost, easy processing, and tunability in pore configurations. In contrast, ceramic membranes have much better performance, extra-long service life, mechanical robustness, and high thermal and chemical stabilities, and they have also been applied in gas, petrochemical, food-beverage, and pharmaceutical industries, where most of polymeric membranes cannot perform properly. However, one of the main drawbacks of ceramic membranes is the high manufacturing cost, which is about three to five times higher than that of common polymeric types. To fill the large gap between the competing ceramic and polymeric membranes, one apparent solution is to develop a ceramic-polymer composite type. Indeed, the properly engineered ceramic-polymer composite membranes are able to integrate the advantages of both ceramic and polymeric materials together, providing improvement in membrane performance for efficient separation, raised life span and additional functionalities. In this overview, we first thoroughly examine three types of ceramic-polymer composite membranes, (i) ceramics in polymer membranes (nanocomposite membranes), (ii) thin film nanocomposite (TFN) membranes, and (iii) ceramic-supported polymer membranes. In the past decade, great progress has been made in improving the compatibility between ceramics and polymers, while the synergy between them has been among the main pursuits, especially in the development of the high performing nanocomposite membranes for water and wastewater treatment at lowered manufacturing cost. By looking into strategies to improve the compatibility among ceramic and polymeric components, we will conclude with briefing on the perspectives and challenges for the future development of the composite membranes.

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“…The global market of NF and RO membranes is dominated by the interfacially polymerized PA TFC structure due to its superior performance and durability, easy fabrication strategy and industrial scale-up options. 23,36,37 The top selective PA layer is 10-200 nm thick, with porous polymer support-usually poly(ethersulfone) (PES) or poly(sulfone) (PSf) usually 30-50 mm thick. 2 Polycondensation reactions of polyamine monomers and polyacyl halides at the interface lead to formation of the PA layer.…”

Section: Interfacially Polymerized 2d-enabled Tfn Membranesmentioning

confidence: 99%