NZVI modified magnetic filter paper with high redox and catalytic activities for advanced water treatment technologies

Abstract

The in situ synthesis of air-stable zero-valent iron nanoparticles (NZVI) embedded in cellulose fibers leads to the assembly of highly reactive magnetic filter papers. These engineered materials display a wide range of applications in the treatment of wastewater and drinking water, including chromium removal, phenol degradation, environmental bioremediation, and catalysis.

Preparation of functionalized Pd/Fe-Fe3O4@MWCNTs nanomaterials for aqueous 2,4-dichlorophenol removal: Interactions, influence factors, and kinetics

“…Moreover, magnetic nZVI particles were prepared to separate the nanoparticles from the aqueous phase via an extra magnetic field, avoiding the environmental risk of nanoparticles [21]. In general, increased removal efficiency, surface area, magnetic property, and other functionalities were observed after the decoration and stabilization of nZVI, which displayed a wide range of applications in the contaminated soil and water treatment [22,23].…”

Iron-based Nanomaterials in the Catalysis

“…All these and above technologies perfectly fit into advanced water treatment technologies, whose additional representative example is as follows. Thus, the in situ synthesis of air-stable nZVI embedded in cellulose fibers led to the assembly of highly reactive magnetic filter papers (membrane nanocomposites) [61]. This nZVI@FP nanocomposite ( Fig.…”

Performing a catalysis reaction on filter paper: development of a metal palladium nanoparticle-based catalyst

“…30 Furthermore, lter paper with cellulose as a major component can be easily modied due to the fact that cellulose is an oxygen-rich natural polymer, 31 and the porous structure and microbrils of the lter paper are amenable for metal NPs to be anchored. 32 Hence, lter paper has been ideally used to immobilize Au, 33,34 Ag, 35 Fe, 36 Ni, 37,38 Cu 39 and Pd NPs. 40,41 For catalytic applications, Xu et al 42 immobilized Pd NPs onto cellulose bers, but the process required long impregnation time (72 h) and high reaction temperature (60 C) to obtain high loading efficiency.…”