巯基功能化短孔道有序介孔材料HS-Zr-Ce-SBA-15的合成及吸附性能  

Synthesis and adsorption properties of sulfhydryl-functionalization HS-Zr-Ce-SBA-15 mesoporous materials with short mesochannels

作　　者：袁金芳[1,2] 李健生[1] 王放[1] 顾娟[1] 孙秀云[1] 韩卫清[1] 王连军[1] 

机构地区：[1]南京理工大学环境科学与工程系,江苏南京210094 [2]河南大学精细化学与工程研究所,河南开封475001

出　　处：《功能材料》2011年第9期1714-1718,共5页Journal of Functional Materials

基　　金：国家自然科学基金资助项目(51078184);高等学校科技创新工程重大项目培育资金资助项目(708049);江苏省自然科学基金资助项目(BK2009392);南京理工大学自主科研专项计划资助项目(2010ZDJH03)

摘　　要：以P123为模板剂,正硅酸乙酯(TEOS)为硅源,氧氯化锆和硝酸亚铈为无机前驱盐,3-巯基丙基-三甲氧基硅烷(MPTMS)为硅烷化试剂,通过一步共缩聚法合成了巯基功能化短孔道有序介孔材料HS-Zr-Ce-SBA-15(HS-ZCS)。采用红外光谱(FT-IR)、小角X射线衍射(LXRD)、透射电镜(TEM)、扫描电镜(SEM)、N2吸附/脱附、热重分析(TG)等手段对HS-ZCS进行了表征。结果表明MPTMS成功地引入到有序介孔材料上,HS-ZCS仍保持了类似于传统SBA-15高度有序的二维六方相介孔结构。对罗丹明6G的吸附实验表明,这种功能化短孔道介孔材料表现出比传统的长孔道SBA-15有更好的传输能力。Sulfhydryl-functionalized HS-Zr-Ce-SBA-15（HS-ZCS） mesoporous materials with unique hexagonal platelet morphologies and short channels were synthesized by a co-condensation method using 3-mercaptopropyltriethoxysilane（MPTS） as organic modifiers,tetraethyl orthosilicate（TEOS） as a silica source,zirconyl chloride and cerous nitrate as precursors,and pluronic P123 triblock copolymer as a structure directing agent.The as-synthesized materials were characterized by low-angle X-ray diffraction（LXRD）,transmission electron microscopy（TEM）,scanning electron microscopy（SEM）,Fourier-transform infrared spectroscopy（FT-IR）,thermogravimetry（TG）,and N2 adsorption/desorption isotherms.Characterization revealed that the functionalized HS-ZCS mesoporous materials have unique hexagonal platelet morphologies with short channels and they possess a highly ordered two-dimensional hexagonal mesoporous structure similar to conventional SBA-15.The uptake of rhodamine 6G onto the organic functionalized HS-ZCS and HS-SBA-15 were compared.The results demonstrate that HS-ZCS materials have higher adsorption rates and adsorption capacities compared with HS-SBA-15.The resultant HS-ZCS materials with short channels are superior to conventional SBA-15 in terms of fiber morphology facilitating molecular diffusion when used in adsorption,separation,and catalytic processes.

关 键 词：功能化短孔道SBA-15 巯基 介孔材料 合成 吸附 

分 类 号：O613.72[理学—无机化学] O647.33[理学—化学]