SiO_(2)空心球的制备与表面形貌调控  

Synthesis and surface morphology control of hollow silica sphere

作　　者：都奎山 杨兵权 宋恺[2] 王鉴[1] Du Kuishan;Yang Bingquan;Song Kai;Wang Jian(College of Chemistry & Chemical Engineering,Northeast Petroleum University,Daqing 163318;Key Laboratory of Bio-inspired Materials and Interface Science,TechnicalInstitute of Physics and Chemistry,CAS,Bejing 100190;School of Materials Science &Engineering,Zhengzhou University,Zhengzhou 450001)

机构地区：[1]东北石油大学化学化工学院,大庆163318 [2]中国科学院理化技术研究所,仿生材料与界面科学重点实验室,北京100190 [3]郑州大学材料科学与工程学院,郑州450001

出　　处：《化工新型材料》2019年第6期164-167,共4页New Chemical Materials

基　　金：国家自然科学基金(21773276)

摘　　要：以聚苯乙烯(PS)微球为模板,通过水解正硅酸乙酯来包裹PS微球,制备了PS/SiO2核壳结构微球,然后通过高温煅烧得到SiO2空心球。利用纳米粒度仪、扫描电子显微镜、透射电子显微镜分析SiO2空心球的粒径和表面形貌。采用控制变量法分别研究了PS微球表面电荷、pH、水和正硅酸乙酯的用量对SiO2空心球表面形貌的影响。实验证明,以表面带正电荷的PS微球为模板,反应体系pH=11.0,正硅酸乙酯注入速度为100μL/min时,制备的SiO2空心球表面最光滑。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 was100μL/min.

关 键 词：聚苯乙烯微球 空心球 核壳结构 表面形貌 调控 

分 类 号：TQ127.2[化学工程—无机化工]