首页> 外文期刊>Applied Catalysis, B. Environmental: An International Journal Devoted to Catalytic Science and Its Applications >High efficiency water splitting photoanodes composed of nano-structured anatase-rutile TiO2 heterojunctions by pulsed-pressure MOCVD
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High efficiency water splitting photoanodes composed of nano-structured anatase-rutile TiO2 heterojunctions by pulsed-pressure MOCVD

机译:高效水分裂光电码由脉冲压力MOCVD由纳米结构锐钛矿 - 金红石TiO2杂交组成

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摘要

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 similar to 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 ruffle phases.
机译:在本文中,通过FTO基板上的脉冲压力金属有机化学气相沉积(PP-MOCVD)在一系列加工时间内通过脉冲压力金属有机化学气相沉积(PP-MOCVD)来处理薄的固体膜以产生一系列厚度和微结构。 薄膜具有高度纳米结构锐钛矿 - 金红石TiO2复合膜,具有独特的单晶枝晶。 退火后,除去碳,材料显示出改善的水分裂活性; 在UV中以上80%以上的IMV,在1次太阳辐照度下在1.23V-rh的光电流与1.23V-rhe相似,延伸到可见范围。 退火材料在文献中的最高报告中表现出最小的重组损失和IPCE; 归因于形成高表面积纳米结构的材料和锐钛矿和褶皱阶段之间的协同相互作用。

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