Highly magnetizable superparamagnetic iron oxide nanoparticles embedded mesoporous silica spheres and their application for efficient recovery of DNA from agarose gel

Iron impregnated carbon materials with improved physicochemical characteristics

“…Undoubtedly, a few peaks representing the crystalline phases of hematite (␣-Fe 2 O 3 ) or maghemite (␥-Fe 2 O 3 ) and magnetite (Fe 3 O 4 ) in the range of 2Â = 30-60 • are visible in the XRD pattern of M2 and more prominently in M3. The reflection peaks (in relevance to the JCPDS card numbers 19-629 and 39-1346) observed for M3, are in close agreement with the corresponding peak intensities for magnetite, e.g., (2 2 0), (3 1 1), (4 0 0), (4 2 2) and (5 1 1), reported for iron oxides by other researchers [50][51][52]. As reported by Lee et al [52], due to the very small size and amount of iron oxide nanoparticles, sometime their phase assignment is ambiguous.…”

Facile Synthesis of Yolk–Shell Structured Inorganic–Organic Hybrid Spheres with Ordered Radial Mesochannels

“…Moreover, pre-shell/ post-core method and emulsion template approach have been demonstrated for the preparation of the yolk-shell structures, but it is diffi cult to control the core or shell size, and small nanoparticles are often found around the shells. [27][28][29] Recently, attention has turned to developing simple and effi cacious self-template methods for yolk-shell structures. Zeng and co-workers reported that yolk-shell inorganic semiconducting micro/nano particles can be directly synthesized by Ostwald ripening.…”

Magnetochromatic Polydiacetylene by Incorporation of Fe3O4 Nanoparticles

“…Powder X-ray diffraction was carried out to characterize the nanocrystalline . [21] The magnetic properties of Fe 3 O 4 nanoparticles were investigated by a superconducting quantum interference device at 300 K. As expected, the synthesized Fe 3 O 4 nanoparticles exhibit superparamagnetic behavior confirmed by zero coercivity and remanence on the hysteresis loop (Figure 2 c). A high saturation magnetization of 77.9 emu g À1 was found for these nanoparticles.…”