A Time-Interval Strategy to Prepare Porous SiO2 Spheres with Adjustable Core–Shell Ratio for Multiple Guest Loading
Jiaxin Du,
Su Liu,
Qiangyu Xue
et al.
Abstract:Porous microspheres with desired pore size and distribution are in high demand for loading various guest materials, especially various pollutants that are several nanometers in size or stably suspended in liquid. Herein, multilevel porous SiO 2 microspheres with arbitrarily adjustable core−shell ratios are prepared by solely regulating the time interval between the start of the hydrolysis reaction and the addition of organic solvent. The core−shell ratio of the SiO 2 microspheres increases gradually with prolo… Show more
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