In this article, thin solid films are processed via pulsed-pressure metal organic chemical vapour deposition (PP-MOCVD) on FTO substrates over a range of processing times to produce a range of thicknesses and microstructures. The films are highly nanostructured anatase-rutile TiO₂ composite films with unique single crystal dendrites. After annealing, carbon was removed, and materials showed improved water splitting activity; with IPCEs above 80% in the UV, photocurrents of ∼1.2 mA cm⁻² at 1.23 V_RHE at 1 sun irradiance and an extension of photoactivity into the visible range. The annealed material exhibits minimal recombination losses and IPCEs amongst the highest reported in the literature; attributed to the formation of a high surface area nanostructured material and synergetic interactions between the anatase and rutile phases.

在本文中，在一定的处理时间范围内，通过在FTO基板上进行脉冲压力金属有机化学气相沉积（PP-MOCVD）来处理固体薄膜，以产生一定范围的厚度和微结构。该膜是具有独特的单晶树枝状晶体的高度纳米结构的锐钛矿型金红石型TiO ₂复合膜。退火后，除去了碳，并且材料显示出改善的水分解活性。在紫外线下IPCE高于80％时，在1.23 V _RHE下的光电流约为1.2 mA cm ^-2在1个太阳辐照度下，光活性扩展到可见光范围。退火后的材料表现出最小的重组损失和IPCE，是文献中报道的最高值。这归因于高表面积纳米结构材料的形成以及锐钛矿和金红石相之间的协同相互作用。