Fabrication high-purity Fe nanochains with near theoretical limit value of saturation magnetization of bulk Fe

One-step dry synthesis of an iron based nano-biocomposite for controlled release of drugs

“…38,40 The O1s peak is deconvoluted into two components with binding energies 531.05 eV, and 534.57 eV, as shown in Fig. 6B(III) is attributed to the Fe-O and C-O-C. 28,41 Similarly, Fig. 6B(IV) represents the S2p, which is deconvoluted into two peaks centered at 163.76 and 168.58 eV, where the rst peak is attributed to -C-Scovalent bond and other peak corresponds to the -C-SO x -(x ¼ 2, 3, 4) species.…”

“…24,27 The high saturation magnetization (M s ) is observed at 11.2 emu g À1 (corresponding to 0.217 emu for 20 mg mass of the sample) which indicates the presence of magnetite (Fe 3 O 4 ). 15,24,28…”

High saturation magnetization superparamagnetic Fe/Ni core/shell microparticles for chromium removal

“…3 The bulk Fe is a kind of the magnetic material with high saturation magnetization whose saturation magnetization is up to 220 emu g À1 . 8,9 Fe nanoparticle (NP) has high reaction and huge specic surface area, 8,9 so it is usually used as an effective sorbent or reductant to degradation/ removal some chemical pollutants. 9 However, the saturation magnetization of Fe NP is relatively low, and Fe NP is very active which is easily oxidized, so that the saturation magnetization is reduced hugely.…”

“…9 However, the saturation magnetization of Fe NP is relatively low, and Fe NP is very active which is easily oxidized, so that the saturation magnetization is reduced hugely. 8,9 Worse, the oxide layer would restrain the electron transfer, which decreases the effective use of Fe NPs. 10 In order to protect and improve the reactivity of Fe NPs, adding the high saturation magnetization composition is a simple way where another magnetic metal should be chosen.…”

“…Because the samples prepared by the chemical vapor deposition (CVD) method have high crystallinity and fewer defects, 13 here we report a CVD method for the synthesis of core/shell Fe/Ni MPs. We use NiO and Fe 3 O 4 particles (based on our earlier work) 5,6,8 as precursors, and the Fe 3 O 4 particles are prepared through a solvothermal reaction. For the two reactions, rstly, Fe 3 O 4 particles are reduced to Fe NPs by H 2 , and secondly, NiO particles are reduced to Ni NPs by H 2 .…”