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用HF或者HCl作联合剂,三嵌段共聚物表面活性剂作模板剂,通过二氧化铈纳米粒子(或者过渡金属掺杂的二氧化铈纳米粒子)组装形成具有热稳定和晶化孔壁的基于二氧化铈的中孔材料。焙烧该合成的超分子模板中孔结构的材料可以形成具有高比表面的基于二氧化铈的中孔材料,这些中孔材料用不同的光谱技术表征。通过D_(2-)OH交换测得的二氧化铈表面的羟基在组装过程和中孔材料的稳定性方面至关重要。联结剂中的卤素离子(F和Cl离子)可以替代中孔材料的表面羟基,从而影响这些中孔材料的结构稳定性和光学活性,而用具有3d的过渡金属在组装前掺杂二氧化铈纳米粒子可以显著地提高中孔材料的光学活性,这种提高主要归结为通过掺杂可以促使能量转移的提高。
Using HF or HC1 as a binding agent and triblock copolymer surfactant as templating agent, ceria nanoparticles (or transition metal-doped ceria nanoparticles) are assembled to form a thermally stable and crystallized pore wall Mesoporous material based on ceria. Materials that roast the pore structure in the synthesized supramolecular template can form ceria-based mesoporous materials with high specific surface area, which mesoporous materials are characterized by different spectroscopic techniques. The hydroxyl groups on the surface of the ceria as measured by D_ (2-) OH exchange are crucial in the assembly process and the stability of the mesoporous material. Halide ions (F and Cl ions) in the coupling agent can substitute for the surface hydroxyl groups of the mesoporous materials, thereby affecting the structural stability and optical activity of these mesoporous materials, whereas doping with ceria Nanoparticles can significantly improve the optical activity of mesoporous materials. The improvement is mainly attributed to the enhancement of energy transfer by doping.