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.
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