Miao Wang

TL;DR: The characterization of nanoparticles indicated that the phase transfer based on the oxidation of OA was successful performed without change in the size and shape of the iron oxide nanoparticles.

TL;DR: In this paper, a method for preparing a silicon dioxide magnetic composite microballoon with a core-shell structure was proposed, which consisted of the following steps: adding magnetic iron oxide nano particles monodispersed in water into the mixing solution of alcohol and ultrapure water, and stirring for 0.3-2h; then adding 0.01-1ml of tetraethyl silicate in the mixture, and stirred for 2-24h, and continuing to stir for 2 -24h; and using applied magnetic field for separating the microballon from the

TL;DR: In this article, the authors proposed a method for transferring magnetic nano-particles from an oil phase to an aqueous phase, which comprises the steps of adding an oxidant to an oil-phase magnetic nanoparticle solution, oxidizing unsaturated carbon-carbon double bonds in an oleic-acid long chain on the surfaces of oil phase magnetic nano particles into hydrophilic carboxyl groups through reaction, and transforming the oil phase dispersed magnetic nano particle into aaqueous-phase dispersed magnetic particle.

TL;DR: In this paper, a method for determining the content of carboxyl end group on the surface of magnetic nanoparticles was proposed, which comprises the steps: fluorescent nanoparticles are prepared by covalent bonding of Carboxylated nanoparticles, an ultraviolet spectrophotometer or a fluorescence spectrogotometer is utilized for measuring the ultraviolet absorption peak value or the fluorescence absorption peak values, and the contrast with a standard curve is further carried out for calculating the content.

TL;DR: In this paper , the authors have shown that the spatial distribution of particles with different densities significantly affects the flow and deposit characteristics of granular column collapse in binary mixtures of steel and aluminum particles.