Direct formation of thermally stabilized amorphous mesoporous Fe2O3/SiO2 nanocomposites by hydrolysis of aqueous iron III nitrate in sols of spherical silica particles

Electrospun silica nanofiber mats functionalized with ceria nanoparticles for water decontamination

This study demonstrates the fabrication of nanoceria-immobilized silica nanofibers for efficient water decontamination with easy reuse and regeneration properties.

Synthesis of organized mesoporous metal oxide films templated by amphiphilic PVA–PMMA comb copolymer

We present a synthesis of organized mesoporous metal oxide films with high porosity and good interconnectivity using an amphiphilic PVA–PMMA comb copolymer which can be a promising template as an alternative to conventional block copolymers.

Preparation and properties of various magnetic nanoparticles

The fabrications of iron oxides nanoparticles using co-precipitation and gadolinium nanoparticles using water in oil microemulsion method are reported in this paper. Results of detailed phase analysis by XRD and Mössbauer spectroscopy are discussed. XRD analysis revealed that the crystallite size (mean coherence length) of iron oxides (mainly γ-Fe₂O₃) in the Fe₂O₃ sample was 30 nm, while in Fe₂O₃/SiO₂ where the ε-Fe₂O₃ phase dominated it was only 14 nm. Gd/SiO₂ nanoparticles were found to be completely amorphous, according to XRD. The samples showed various shapes of hysteresis loops and different coercivities. Differences in the saturation magnetization (MS) correspond to the chemical and phase composition of the sample materials. However, we observed that MS was not reached in the case of Fe₂O₃/SiO₂, while for Gd/SiO₂ sample the MS value was extremely low. Therefore we conclude that only unmodified Fe₂O₃ nanoparticles are suitable for intended biosensing application in vitro (e.g. detection of viral nucleic acids) and the phase purification of this sample for this purpose is not necessary.