The effects of laser irradiation on γ-Fe2O3 4 ± 1 nm diameter maghemite nanocrystals synthesized by co-precipitation and dispersed into an amorphous silica matrix by sol-gel methods have been investigated as function of iron oxide mass fraction. The structural properties of γ-Fe2O3 phase were carefully examined by X-ray diffraction and transmission electron microscopy. It has been shown that γ-...

This work has investigated the influence of common groundwater anions (Cl , NO3 , SO4 and HCO3 ) on the corrosion behaviour and associated removal of copper (Cu) and zinc (Zn) ions onto nanoscale zerovalent iron particles (nZVI). After 16 week exposure to solutions containing each anion at 10 mM concentrations, nZVI was observed to corrode into different iron (hydr)oxide phases (determined usin...

Tailoring the structure of nanocrystal superlattices is an important step toward controlled design of novel nanostructured materials and devices. We demonstrate how the long-range order and macroscopic dimensions of magnetic nanoparticle arrays can be controlled by the use of a modulated magnetic field. Inducing a dipolar attraction during the initial stage of the drying-mediated self-assembly ...

To extend the external control capability of drug release, iron oxide nanoparticles (NPs) encapsulated into polymeric microspheres were used as magnetic media to stimulate drug release using an alternating magnetic field. Chemically synthesized iron oxide NPs, maghemite or hematite, and the antibiotic ciprofloxacin were encapsulated together within polycaprolactone microspheres. The polycaprola...

An easily recoverable photo-catalyst in solid form has been synthesized and applied catalytic ozonation the presence of primidone. Maghemite, graphene oxide titania (FeGOTi) constituted solid. Additionally, (TiO2) oxide–titania (GOTi) catalysts were also tested for comparative reasons. The main characteristics FeGOTi 144 m2/g surface area; a 1.29 Raman D G band intensity ratio; 26-emu g−1 magne...