Recent advances on iron oxide magnetic nanoparticles as sorbents of organic pollutants in water and wastewater treatment

Abstract

<jats:title>Abstract</jats:title> <jats:p>The constant growth in population worldwide over the past decades continues to put forward the need to provide access to safe, clean water to meet human needs. There is a need for cost-effective technologies for water and wastewater treatment that can meet the global demands and the rigorous water quality standards and at the same maximizing pollutant efficiency removal. Current remediation technologies have failed in keeping up with these factors without becoming cost-prohibitive. Most recently, nanotechnology has been sought as the best alternative to increase access to water supplies by remediating those already contaminated and offering ways to access unconventional sources. The use of iron oxide magnetic nanoparticles as nanoadsorbents has led way to a new class of magnetic separation strategies for water treatment. This review focuses on highlighting some of the most recent advances in core-shell iron oxide magnetic nanoparticles and nanocomposites containing iron oxide nanoparticles currently being developed for water and wastewater treatment of organic pollutants. We discuss the novelty of these novel materials and the insight gained from their advances that can help develop cost-effective reusable technologies for scale-up and commercial use.</jats:p>

Polydopamine functionalized hydrogel beads as magnetically separable antibacterial materials

“…Iron oxide nanoparticles, owing to their biocompatibility, cost-effective synthesis, ease of surface engineering and magnetism have proven suitable for biomedical and water purication applications. 12,13 Superparamagnetic iron oxide nanoparticles (SPIONs), including magnetite (Fe 3 O 4 ) and maghemite (g-Fe 2 O 3 ) are well-recognized for their excellent ability as nanoadsorbents either in free form or as composites for organic pollutants and heavy metals for water purication. [13][14][15] Polymeric hydrogels encapsulating such magnetic iron oxide nanoparticles either bare or surface modied can serve as a versatile platform to remove microbes and ions in waters.…”

“…12,13 Superparamagnetic iron oxide nanoparticles (SPIONs), including magnetite (Fe 3 O 4 ) and maghemite (g-Fe 2 O 3 ) are well-recognized for their excellent ability as nanoadsorbents either in free form or as composites for organic pollutants and heavy metals for water purication. [13][14][15] Polymeric hydrogels encapsulating such magnetic iron oxide nanoparticles either bare or surface modied can serve as a versatile platform to remove microbes and ions in waters. 16 Aer action, these hydrogels can be separated with an external magnet giving way to a fast and effective approach.…”

Multifunctional temperature‐responsive polymers as advanced biomaterials and beyond

“…Iron oxide nanoparticles (IONPs) have a wide variety of applications spanning through multiple domains such as biomedical, catalysis, and environmental fields . Their magnetic property can be exploited in a variety of ways: (1) special manipulation through use of a static magnetic field, (2) heat generation in response to an AMF for local destabilization, (3) tunable size formation for desired application .…”

Cyclic voltammetry, photocatalytic and antimicrobial comparative studies of fabrication Fe3O4 and Fe3O4/PAN nanofibers

“…Nanoparticles of various metal oxide have been synthesized, these include; nickel oxide (NiO) [13], zinc oxide (ZnO) [14], copper oxide (CuO) [15], and iron oxides (Fe 3 O 4 ) [16], to mention but few. Iron oxide nanoparticles (NPs) are of special interest among other nanomaterials because of its high surface area to volume ratio, fast kinetics, strong adsorption capacities, [17] and great magnetic properties [18].…”