期刊
PARTICUOLOGY
卷 22, 期 -, 页码 177-184出版社
ELSEVIER SCIENCE INC
DOI: 10.1016/j.partic.2014.08.005
关键词
Sol-gel; Polymerization-induced colloid aggregation; Silica; High purity; Monodisperse
资金
- China National Natural Science Foundation [51242001]
- Doctor Scientific Research Foundation of Henan University of Technology [2013BS029]
Ultra-pure mesoporous silica microspheres with good monodispersity were synthesized in two steps: nanometer-sized silica sal was produced by the sal-gel process, then micrometer-sized silica microspheres were synthesized by polymerization-induced colloid aggregation of the silica sol. The total metal content of the microspheres was extremely low, which eliminated the tailing of chromatographic peaks by chelating reagents. The pore structure of the silica microspheres could be controlled by altering the sal-gel conditions. The silica microsphere particle size could be adjusted by using different polymerization-induced colloid aggregation conditions. (C) 2014 Chinese Society of Particuology and Institute of Process Engineering, Chinese Academy of Sciences. Published by Elsevier B.V. All rights reserved.
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