Papers by Author: Sheng Cui

Abstract: Paclitaxel-loaded microspheres with magnetic Fe3O4 nanoparticles were synthesized with albumin as carrier. The morphology was characterized by high-resolution transmission electron microscopy (HRTEM). The drug-loading rate and entrapment rate of the microspheres were researched by ultraviolet and visible spectrophotometer. The inhibition action of taxol microspheres to growth of esophagus cancer Eca109 cell were examined by MTT method. The result shows that it is regular spherical. The mean size and size distribution of microspheres are 275.6nm and 144.3nm by Zetasizer3000. The drug-loading rate is 3.013% and the entrapment rate is 35.26%. It has excellent target-orientation and sustained-release property which can prevent the growth of Eca109 cell.

Abstract: Citrate hydrolyzing method was used to prepare nano-LiAlO₂ powder, and the technological parameters were optimized by orthogonal experiment. The minimum size of LiAlO₂ powder was about 100nm, obtained when the green performs were sintered at 690°C for 2h, with the molar ratio of citric acid and metal-salt of 1:1 and concentration of Li⁺ of 0.5mol/L. XRD and SEM were used to examine the phase composition, particle size and microstructure. The LiAlO₂ powder had been agglomerated during the sintering process.

Abstract: Sn-In₂O₃ nanoparticles were synthesized by Sol-Gel method and dispersed steady Sn-In₂O₃ colloid solution was gained. Sn-In₂O₃ nanoparticles are body-center cube ferromanganese mine structure proved by XRD. And they are spheres and 15~25nm studied by HRTEM. The average size of nanoparticles is 21.7 nm with a narrow width 10.8nm measured by granularity instrument. Zeta potential is +33.4mV which means that there are very strong electrostatic repulsion to prevent the bird nesting of Sn-In₂O₃ nanoparticles.

Abstract: Silica-based aerogels doped with nano-ITO powder were synthesized using sol–gel process followed by supercritical drying. The main factors were studied including dosage of compling agent KH570 and ITO. The result shows that thermal radiation conductivity is 0.02659 W/(m•K) with ITO of 44.44% after 10 g ITO powder is modified with 1 mL KH570. The microstructure and physical characteristic of the SiO₂–ITO aerogels were characterized by FTIR, SEM, TG-DSC and BET. Their specific surface was in the range of 513–775m²/g and their average pore size was mainly 20 nm. Nano-ITO powders are physically embedded by SiO₂ aerogels.