Synthesis and surface morphology control of hollow silica sphere
Du Kuishan1,2, Yang Bingquan2,3, Song Kai2, Wang Jian1
1.College of Chemistry & Chemical Engineering,Northeast Petroleum University,Daqing 163318; 2.Key Laboratory of Bio-inspired Materials and Interface Science,Technical Institute of Physics and Chemistry,CAS,Beijing 100190; 3.School of Materials Science & Engineering,Zhengzhou University,Zhengzhou 450001
Abstract: Polystyrene/silica core-shell microspheres were fabricated for polystyrene microsphere as template and tetraethoxysilane as silica source through sol-gel method,and hollow silica spheres were obtained by calcining at high temperature.The size and surface morphology of spheres were analyzed by Zeta potential analyzer,SEM and TEM.The surface morphology of spheres was regulated by the surface charge of PS microspheres,pH value,the amounts of water and TEOS.The experiment proved that the outer silica layer appeared smooth when the surface positively charged PS microspheres was used as template,the reaction system pH=11.0 and the injection velocity of TEOS was 100μL/min.
都奎山, 杨兵权, 宋恺, 王鉴. SiO2空心球的制备与表面形貌调控[J]. 化工新型材料, 2019, 47(6): 164-167.
Du Kuishan, Yang Bingquan, Song Kai, Wang Jian. Synthesis and surface morphology control of hollow silica sphere. New Chemical Materials, 2019, 47(6): 164-167.
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