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采用剥离-重堆积的方法将聚合羟基锆离子和Co2+混合溶液嵌入到钛酸盐板层间,制得了钴掺杂锆柱撑材料(CZPT),考察了Co对锆柱撑复合材料(简写为ZPT)的形成及其催化活性的影响。利用X-射线衍射(XRD)、扫描/透射电子显微镜(SEM/HR-TEM)、紫外-可见吸收光谱(UV-Vis)和N2吸附等方法对复合材料进行了表征。结果表明,掺入质量分数为5%(1∶20)的Co可以使ZPT样品的介孔和比表面积明显增大。同时,可以抑制体系光生电子与空穴的复合,吸收光波长有明显的红移。CZPT系列柱撑材料在紫外和可见光辐照下催化降解罗丹明(Rh B)的脱色率明显高于ZPT。其中,复合材料CZPT-5的催化活性最好,表明材料的光催化活性还与掺杂后柱撑材料中含Co客体与主体间的电子耦合作用有关。
Cobalt-doped zirconium pillared material (CZPT) was prepared by stripping-re-stacking polymeric zirconium ion and Co2 + mixed solution between titanate layers. The effects of Co on the properties of zirconium-pillared composites ZPT) formation and its catalytic activity. The composites were characterized by X-ray diffraction (XRD), scanning / transmission electron microscopy (SEM / HR-TEM), UV-Vis absorption spectroscopy and N2 adsorption. The results show that the incorporation of 5% (1:20) Co can significantly increase the mesoporous and specific surface area of ZPT samples. At the same time, it can restrain the recombination of photogenerated electrons and holes in the system, and there is a significant red shift of the absorption light wavelength. The decolorization rate of Rhodamine catalyzed degradation of CZPT series pillared materials under UV and visible light irradiation was significantly higher than that of ZPT. Among them, the composite material CZPT-5 has the best catalytic activity, indicating that the photocatalytic activity of the material is also related to the electronic coupling between the Co-containing guest and the host in the doped pillared material.