Novel TiO2 films with organized porosity and tailored doping as efficient visible light photocatalysts

通过蒸发诱导自组装法制备具有严格控制的形态特性（微/介/宏观孔隙度、膜厚）和结构（结晶度）的有序TiO2多孔膜。将金属离子、硫掺杂剂、金属纳米粒子（Pt、Ag）或窄带半导体（MoS2、WS2）掺入孔中可以增强可见光的吸收和光子产量。由于TiO2的高结晶度、高内表面和定制掺杂的结合，所获得的复合材料在光催化反应中在紫外和可见光照明下都表现出高的光催化活性。由于在气相、液相、固相以及微生物细胞破坏中进行的测试反应将被采用，除了可以评估所获得的复合膜作为新型光催化剂的质量外，还可以判断反应作为标准测试的适用性。特别注意将致力于深入了解表面和吸附性质的纹理表面。最后，建立了光催化结果与有序多孔TiO2膜的结构和表面性质及其掺杂之间的关系模型。这将使例如新的前瞻性自清洁和自消毒表面的建设成为可能。

Ordered porous films of TiO2 with strictly controlled morphological properties (hierarchical micro/meso/macroporosity, film thickness) and structure (crystallinity) will be prepared by the evaporation-induced self-assembly method. The incorporation of metal ions, sulphur dopants, nanoparticles of metals (Pt, Ag) or narrow band semiconductors (MoS2, WS2) into the pores will enhance the absorption of visible light and the photon yields. Due to a combination of high crystallinity of TiO2 in the walls, high inner surface and tailored doping the obtained composites are expected to show high photocatalytic activity under both UV- and visible illumination in photocatalytic reactions. As test reactions such performed in gas phase, in liquid phase, in solid phase as well as microbiologic cell destruction will be employed enabling beside of the assessment of the quality of the obtained composite films as novel photocatalyst also a judgement of the suitability of the reactions as standard tests. Special attention will be devoted to the deep understanding of the surface and adsorption properties of the textured surfaces. Finally, a model relating the photocatalytic results with the structural and surface properties of the ordered porous TiO2 films and their doping will be constructed. This will enable the construction of e.g. novel prospective self-cleaning and self-sterilizing surfaces.