In this paper, structural, magnetic, optical, and photocatalytic properties of core-shell structure Fe3O4@GO nanoparticles have been compared with Fe3O4 nanoparticles in the degradation of methyl blue and methyl orange. For this purpose, GO nanosheets were wrapped around the APTMS-Fe3O4 nanoparticles and then charact...

In vivo biological application of upconversion nanoparticles (UCNPs) prefers excitation of 700-850 nm, instead of 980 nm, due to the absorption of water. Recently approach in constructing robust Nd doped UCNPs subject to 808 nm excitation relies on a thick Nd sensitized shell. However, for the very 10 important and popular Förster resonance energy transfer (FRET)-based applications, such as pho...

In this article we present a systematic, numerical analysis of the magnetic properties of pyramidal-shaped core-shell structures in a size range below 400 nm. These are three dimensional structures consisting of a ferromagnetic shell which is grown on top of a non-magnetic core. The standard micromagnetic model without the magnetocrystalline anisotropy term is used to describe the properties of...

a simple and efficient method for the chemoselective 1,1-diacetate protection of aromatic aldehydes with acetic anhydride by using ni2+ supported on hydroxyapatite-core-shell magnetic γ-fe2o3 nanoparticles (γ-fe2o3@hap-ni2+) under solvent free conditions. this method has several advantages, including high yield, short reaction time, simple work-up and recyclable property of the catalyst. the ca...

In solar energy harvesting using cells and photocatalysts, the photoexcitation of electrons holes in semiconductors is first major step conversion. The lifetime carriers, a key factor determining conversion photocatalysis efficiency, shortened mainly by recombination photoexcited carriers. We prepared tested series ZnO/TiO2-based heterostructures search designs which can extend carrier lifetime...

We report a magnetically transportable microlaser with cholesteric liquid crystal (CLC) core-shell structure, operating in band-edge mode. The dye doped CLC shells as a water-in-oil-in-water (W/O/W) double emulsion were fabricated by microfluidics. Water-dispersible Fe3O4 magnetic nanoparticles were incorporated in the inner aqueous phase by taking advantage of the immiscibility with the middle...