Magnetic core–shell iron(II,III) oxide@layered double oxide microspheres for removal of 2,5-dihydroxybenzoic acid from aqueous solutions

Environmental implications and applications of engineered nanoscale magnetite and its hybrid nanocomposites: A review of recent literature

“…Magnetic MWCNTs nanocomposite has been used for removal of four nitrofurans, namely, furazolidone (FZD), nitrofurazone (NFZ), nitrofurantoin (NFT), and furaltadone (FTD) from aqueous solution [248]. Magnetic core-shell Fe3O4@layered double oxide (Fe3O4@LDO) microspheres remove more 2,5-dihydroxybenzoic acid (2,5-DHBA) from aqueous samples compared with Fe3O4@LDH ( Figure 13) [249]. Novel mesoporous cetyltrimethylammonium bromide (CTAB)-functionalized magnetic microspheres with a core/shell structure (mesoporous Fe3O4@SiO2@CTAB-SiO2) effectively remove perfluorooctane sulfonates (PFOS) from water at acidic conditions (pH = 3) [250].…”

The photocatalytic property for water splitting and the structural stability of CuMgM layered double hydroxides (M=Al, Cr, Fe, Ce)

“…The wide choice of metal cations and interlayer anions give rise to a series of layered functional materials. They are widely used in the fields of anion exchange, adsorption (Guo et al, 2012;Shimamura et al, 2013;Tang et al, 2015), drug delivery reagents (Oliver, 2009;Zhao et al, 2012a,b), electrochemistry Tonelli et al, 2013), functional polymers (Zhou et al, 2011;Miranda et al, 2013), catalysts (Kantam et al, 2012;Lopez-Martinez and Shannon, 2012;Chubar et al, 2013;Mendoza-Damian et al, 2013), and so on. Particularly, when the Mg or Al element in the octahedral structure was replaced by other metal elements such as Zn, Cu and Ti, it would narrow the energy gap, enable the electrons being excited easily by visible light to create the electronhole pair and therefore increase the photo-catalysis activity (Wang and O'Hare, 2012;Xia et al, 2014).…”

Facile Preparation of a Stable Fe3O4@LDH@NiB Magnetic Core‐Shell Nanocomposite for Hydrogenation

“…[37][38][39] Ni contents, BET surface areas, pore volumes, and H 2 -chemisorptions of these nanocomposites and NiB were measured and the results are summarized in Table 1. [40] Considering that the BET surface area and pore volume of Fe 3 O 4 @LDH@NiB decreased to 61 m 2 •g 1 and 0.16 cm 3 •g 1 , we speculated that NiB has dispersed on the outer surface and occupied some pores of Fe 3 O 4 @LDH. The BET surface area and pore volume of Fe 3 O 4 @LDH was 111 m 2 •g 1 and 0.39 cm 3 •g 1 , respectively.…”

“…Additionally, the H 2 -chemisorption value also showed the same tendency. [40,44] The existence of interlayer anions and surface hydroxyl group in Fe 3 O 4 @LDH is benefit to the binding of metal ions, and thereby promotes the dispersion and immobilization of the active Ni. Thus, we can conclude that the existence of LDH favors the dispersion of the active NiB species on its surface and then accounts for the high H 2 -chemisorption ability of Fe 3 O 4 @LDH@NiB.…”