Mesoporous TiO₂ hollow microspheres (HTM) composed of irregularly arranged nanospheres were prepared through a one-pot template-free solvothermal way based on the aldol condensation reaction of acetylacetone. The synthesized hollow TiO₂ microspheres were investigated by a series of characterizations. Images of FE-SEM and TEM demonstrate that the surface of TiO₂ hollow microsphere with a diameter of 1.5 µm are mesoporous and constructed with 150 nm TiO₂ nanospheres. The mesoporous shell of the hollow microspheres is about 110 nm in thickness. XRD pattern shows the prepared samples are anatase phase. UV–Vis spectrum indicates that excellent light scattering ability of the prepared sample. The DSSCs using mesoporous TiO₂ hollow microspheres as the top scattering layer exhibits the improvement of short-circuit current density (J_sc) and conversion efficiency (η) of 6.63%, while the benchmarked P₂₅ photoanode is only 5.09%, showing 30% increase in the energy conversion efficiency.

基于乙酰丙酮醛醇的缩合反应，通过一锅法无模板溶剂热法制备了由不规则排列的纳米球组成的介孔TiO ₂空心微球。通过一系列表征研究了合成的空心TiO ₂微球。FE-SEM和TEM图像表明，直径为1.5 µm的TiO ₂中空微球表面是介孔的，并由150 nm TiO ₂纳米球构成。中空微球的中孔壳的厚度为约110nm。XRD图谱显示制备的样品为锐钛矿相。UV-Vis光谱表明制备的样品具有出色的光散射能力。使用介孔TiO ₂的DSSC空心微球作为顶部散射层的短路电流密度（J _sc）和转换效率（η）提高了6.63％，而基准的P ₂₅光电阳极仅为5.09％，显示出能量转换效率提高了30％ 。