Microporous ceria thin films having nanocrystallites network were synthesized by evaporation-induced self-assembly process, using P123 amphiphilic copolymer as structure-directing agent. The impact of key experimental parameters, i.e., the sol ageing, the relative humidity (RH), the thermal treatment, on the thin layer elaboration were investigated. The results show that the organization of the nanoparticles is possible for a sol ageing time lower than 16 days and that the size of the mesophase within the thin layer increases with the relative humidity fixed during the film deposition. Finally, an increase of the thermal treatment temperature from 300 to 1000 °C leads to the formation of fluorite-like dioxide material coupled with a loss of nanocrystallites organization and porosity due to the increase of the size of the crystallites. This loss of nanocrystallites organization is more drastic in the direction perpendicular to the surface and less pronounced along the surface. Thus, a compromise between the crystallization and the preservation of the porosity needs to be found.

以P123两亲共聚物为结构导向剂，通过蒸发诱导自组装法合成了具有纳米微晶网络的微孔氧化铈薄膜。研究了关键实验参数，如溶胶老化，相对湿度（RH），热处理对薄层加工的影响。结果表明，对于小于16天的溶胶老化时间，纳米颗粒的组织是可能的，并且薄层内的中间相的尺寸随着在膜沉积期间固定的相对湿度而增加。最后，将热处理温度从300℃提高到1000℃导致萤石状二氧化材料的形成，并且由于晶粒尺寸的增加而导致纳米晶粒组织和孔隙率的损失。纳米微晶组织的这种损失在垂直于表面的方向上更为剧烈，而在表面上则较不明显。因此，需要在结晶和保持孔隙率之间找到折衷方案。