An attractive class of materials for photo(electro)chemical reactions are hybrids based on semiconducting metal oxides and nanocarbons (e.g. carbon nanotubes (CNT), graphene), where the nanocarbon acts as a highly-stable conductive scaffold onto which the nanostructured inorganic phase can be immobilised; an architecture that maximises surface area and minimises charge transport/transfer resistance. TiO₂/CNT photoanodes produced by atomic layer deposition on CNT fabrics are shown to be efficient for H₂ production (0.07μmol/min H₂ at 0.2V vs Ag/AgCl), nearly doubling the performance of TiO₂ deposited on planar substrates, with 100% Faradaic efficiency. The results are rationalised based on electrochemical impedance spectroscopy measurements showing a large reduction in photoelectron transport resistance compared to control samples and a higher surface area. The low TiO₂/CNT interfacial charge transfer resistance (10Ω) is consistent with the presence of an interfacial Ti-O-C bond and corresponding electronic hybridisation determined by spatially-resolved Scanning Photoelectron Microscopy (SPEM) using synchrotron radiation.

用于光（电）化学反应的一类有吸引力的材料是基于半导体金属氧化物和纳米碳（例如碳纳米管（CNT），石墨烯）的混合材料，其中纳米碳充当了高度稳定的导电支架，纳米结构的无机相可以在该支架上被固定 一种使表面积最大化并使电荷传输/转移阻力最小的体系结构。通过原子层沉积在CNT织物上产生的TiO ₂ / CNT光阳极显示出对H _2的生产有效（在0.2 V vs Ag / AgCl时为0.07μmol / min H ₂），几乎使TiO ₂的性能提高了一倍沉积在平面基板上，法拉第效率为100％。基于电化学阻抗谱测量的结果是合理的，与对照样品相比，该测量显示出光电子传输阻力大大降低，表面积更大。较低的TiO ₂ / CNT界面电荷转移电阻（10Ω）与界面Ti-OC键的存在以及通过使用同步加速器辐射的空间分辨扫描光电子显微镜（SPEM）确定的相应电子杂交相一致。