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为了改善氧化钛层柱蒙脱石的结构性能,以长链聚合物-端氨基聚甲基环氧乙烷(PPO-D-2000)为结构调节剂,调控合成了聚合物-氧化钛层柱蒙脱石材料。采用X射线粉末衍射、红外、拉曼光谱、TG/DSC、TEM和BET等手段进行了结构表征。结果表明,相比于小分子量表面活性剂而言,长链聚合物不仅能显著提高氧化钛层柱蒙脱石中的二氧化钛含量,而且比表面积比单独氧化钛柱撑蒙脱石增加了约13%,达到241.52m2/g,尤其是孔径、孔体积等孔道结构参数增加一倍左右。将合成的柱撑蒙脱石材料应用于对水中甲基橙的吸附和光催化性能研究表明,聚合物的调控作用能提高氧化钛层柱蒙脱石的吸附能力,光催化效率也有所改善。因此,聚合物对优化无机层柱粘土材料结构、改善吸附和催化性能具有良好的调控作用,为发展环境催化材料提供了新的途径。
In order to improve the structural properties of the titanium oxide montmorillonite, the long-chain polymer-terminated aminopolymethyloxirane (PPO-D-2000) was used as the structural regulator to control the synthesis of the polymer- Montmorillonite material. The structure was characterized by X-ray powder diffraction, infrared, Raman spectroscopy, TG / DSC, TEM and BET. The results show that the long chain polymer not only significantly increases the titanium dioxide content in the titanium oxide layer montmorillonite but also increases the specific surface area by about 13 over the titanium oxide pillared montmorillonite alone, compared to the small molecular weight surfactant %, Reaching 241.52m2 / g, especially pore size, pore volume and other parameters of the pore structure doubled. The synthetic pillared montmorillonite material applied to water adsorption of methyl orange and photocatalytic performance studies have shown that the regulation of the polymer can improve the titanium oxide layer montmorillonite adsorption capacity, photocatalytic efficiency also improved. Therefore, the polymer has a good regulation on the structure optimization of inorganic column-pillared clays and the improvement of adsorption and catalytic properties, which provides a new way for the development of environmental catalytic materials.