高度单分散聚硫氰基倍半硅氧烷微球的可控合成及其吸附性能研究  

Controlled Synthesis of Highly Monodisperse Poly( thiocyanatosilesquioxane)Micospheres and Its Adsorption Property

作　　者：曾凡龙[1] 陈连喜[1] 李洁[1] 李曦[1] 刘振辉[1] 江杨[1] 

机构地区：[1]武汉理工大学化学化工与生命科学学院,武汉430070

出　　处：《硅酸盐通报》2015年第10期2748-2752,2763,共6页Bulletin of the Chinese Ceramic Society

基　　金：国家自然科学基金(51273155);北京大学天然药物及仿生药物国家重点实验室开放基金(K20140214);湖北省自然科学基金(2014CFB862)

摘　　要：在水溶液中,以3-硫氰基丙基三乙氧基硅烷（TCPTES）为前驱体,氨水为催化剂,通过一步法成功合成了不同粒径、高度单分散的聚硫氰基倍半硅氧烷（PTSQ）球形纳米粒子。通过扫描电子显微镜（SEM）、转靶X射线衍射仪（XRD）、傅里叶变换红外光谱（FTIR）、热重（TG）分析对产物的形貌、结构及热性能进行了表征,此外,通过原子吸收光谱（AAS）研究了产物对Cd^2＋的吸附性能。研究结果表明,通过调节前驱体TCPTES与催化剂氨水的浓度能够可控地制备出粒径为0.45-1.20μm的高度单分散PTSQ微球。当PTSQ粒子用于Cd^2＋的吸附时,其吸附量最高达0.563 mmol/g,几乎为纯二氧化硅微球的两倍。In aqueous solution, highly monodisperse poly（ thiocyanatosilesquioxane）（ PTSQ）micospheres with various sizes have been prepared successfully by one-step method using 3-thiocyanatopropyltriethoxysilane（ TCPTES） as a precursor and ammonia hydroxide as catalyst.The morphology,structures and thermal performance of the products were characterized by scanning electron microscopy（ SEM）,rotation anode high power X-ray diffractormeter（ XRD）,fourier transform infrared spectroscopy（ FTRT） and thermogravimetric analysis（ TGA）,respectively.Moreover,The adsorption behavior of the PTSQ micospheres for cadmium ion was studied by atomic absorption spectrophotometry（ AAS）.The results showed that the size of highly monodisperse PTSQ micospheres could be adjusted from 0.45-1.20μm by controlling the concentration of the organosilane precursor and the ammonia catalyst.The adsorption capacities of the PTSQ particles are up to 0.563 mmol/L for cadmium ion,which is almost twice times as high as that of pure silica.

关 键 词：聚硫氰基倍半硅氧烷 一步法 单分散 吸附 

分 类 号：TQ173[化学工程—搪瓷工业]