Water purification by polymer nanocomposites: an overview

Pandey, Neeta; Shukla, Shipra; Singh, N.B.

doi:10.1080/20550324.2017.1329983

Cited by 223 publications

(77 citation statements)

References 193 publications

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“…Metamaterials‐based, flexible, self‐healing highly sensitive sensors of various types have also been developed on the basis of the dynamic, advanced materials . Air and water purification by highly technological nanocomposites and nanomaterials also provides new possibilities for the creation of highly efficient environmental equipment …”

Section: Remote Horizons: Materials Challenges For Moon and Mars Explomentioning

confidence: 99%

Advanced Materials for Next‐Generation Spacecraft

et al. 2018

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Spacecraft are expected to traverse enormous distances over long periods of time without an opportunity for maintenance, re‐fueling, or repair, and, for interplanetary probes, no on‐board crew to actively control the spacecraft configuration or flight path. Nevertheless, space technology has reached the stage when mining of space resources, space travel, and even colonization of other celestial bodies such as Mars and the Moon are being seriously considered. These ambitious aims call for spacecraft capable of self‐controlled, self‐adapting, and self‐healing behavior. It is a tough challenge to address using traditional materials and approaches for their assembly. True interplanetary advances may only be attained using novel self‐assembled and self‐healing materials, which would allow for realization of next‐generation spacecraft, where the concepts of adaptation and healing are at the core of every level of spacecraft design. Herein, recent achievements are captured and future directions in materials‐driven development of space technology outlined.

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Section: Remote Horizons: Materials Challenges For Moon and Mars Explomentioning

confidence: 99%

Advanced Materials for Next‐Generation Spacecraft

et al. 2018

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“…is allows for the development of new effective nanomaterials and nanodevices [14,[16][17][18][19][20]. Gold nanoparticles, for instance, show very high chemical reactivity compared to bulk gold, well-known for being inert.…”

Section: Introductionmentioning

confidence: 99%

“…Polymeric materials provide an excellent dispersion and sequestering environment for nanoparticles [22]. Water and waste-water treatment in particular have harnessed the potential of nanoassisted polymeric materials to defeat fouling and biofouling [20,23]. Surface modification of polyaniline, polysulfone, and cellulose acetate, among others has been done with nanoparticles to make better membrane materials [24,25].…”

Section: Introductionmentioning

confidence: 99%

Fabrication of Nanostructured Polyamic Acid Membranes for Antimicrobially Enhanced Water Purification

Kimotho

Noah

Nawiri

et al. 2020

Advances in Polymer Technology

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Water scarcity and quality challenges facing the world can be alleviated by Point-of-Use filtration devices (POU). e use of filtration membranes in POU devices has been limited largely because of membrane fouling, which occurs when suspended solids, microbes, and organic materials are deposited on the surface of filtration membranes significantly decreasing the membrane lifespan, thereby increasing operation costs. ere is need therefore to develop filtration membranes that are devoid of these challenges. In this work, nanotechnology was used to fabricate nanostructured polyamic acid (nPAA) membranes, which can be used for microbial decontamination of water. e PAA was used as support and reducing agent to introduce silver nanoparticles (AgNPs) and gold nanoparticles (AuNPs) with antimicrobial properties. e nPAA membranes were fabricated via thermal and wet phase inversion technique and then tested against Escherichia coli and Staphylococcus aureus following standard tests. e resulting nanoparticles exhibited excellent dispersibility and stability as indicated by the color change of the solution and increments of optical density at 415 nm for AgNPs and 520 nm for AuNPs. e wet phase inversion process used produced highly porous, strong, and flexible nPAA membranes, which showed well-dispersed spherical AuNPs and AgNPs whose rough average size was found to be 35 nm and 25 nm, respectively. e AgNPs demonstrated inhibition for both gram positive E. coli and gram negative S. aureus, with a better inhibitory activity against S. aureus. A synergistic enhancement of AgNPs antimicrobial activity upon AuNPs addition was demonstrated. e nPAA membranes can thus be used to remove microbials from water and can hence be used in water purification.

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“…Functional polymers are of extensive interest in these days because they possess functional groups having more reactivity and/or polarity than their basic hydrocarbon chains. Hence, many researches have now focused on taking advantages of functional polymers in an attempt to improve properties of materials for use in a wide range of applications such biosensor, drug delivery systems, purification, or separation systems . Some of these polymers can also respond to external stimuli such as temperature, pH, light, electrostatic, and electrical .…”

Section: Introductionmentioning

confidence: 99%

Water dispersible magnetite nanocluster coated with thermo‐responsive thiolactone‐containing copolymer

Paenkaew

Kajornprai

Rutnakornpituk

2020

Polymers for Advanced Techs

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This work focused on surface modification of magnetite nanoparticle (MNP) with poly(poly(ethylene glycol) monomethyl ether methacylate)-b-(poly(N-isopropylacrylamide)-st-poly(thiolactone acrylamide)), PPEGMA-b-(PNIPAAm-st-PTlaAm), diblock copolymer, synthesized via reversible addition-fragmentation chain transfer (RAFT) polymerization to obtain the particles having good water dispersible PPEGMA brushes, thermo-responsive PNIPAAm, and reactive thiolactone groups of PTlaAm.The thiolactone moiety in the copolymer can readily react with amino groups grafted on MNP surface and essentially induced the formation of MNP nanocluster.According to transmission electron microscopy (TEM), the size of the nanocluster ranged between 200 and 500 nm per cluster with 8 to 10 nm in diameter for each particle. Hydrodynamic diameter of the nanocluster significantly decreased as the dispersion temperature increased from 25 C to 45 C due to the shrinkage of thermo-responsive PNIPAAm when crossing its lower critical solution temperature (LCST). This stable nanocluster might be potentially used as a magnetic carrier for control release of entrapped entities with a thermally triggering mechanism. K E Y W O R D S magnetite, nanocluster, thermo-responsive, thiolactone, water dispersible

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Water purification by polymer nanocomposites: an overview

Cited by 223 publications

References 193 publications

Advanced Materials for Next‐Generation Spacecraft

Advanced Materials for Next‐Generation Spacecraft

Fabrication of Nanostructured Polyamic Acid Membranes for Antimicrobially Enhanced Water Purification

Water dispersible magnetite nanocluster coated with thermo‐responsive thiolactone‐containing copolymer

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