Teranishi Miwako, Wada Masataka, Naya Shin-Ichi, Tada Hiroaki
Environmental Research Laboratory, Kindai University, 3-4-1, Kowakae, Higashi-Osaka, Osaka, 577-8502, Japan.
Department of Applied Chemistry, School of Science and Engineering, Kindai University, 3-4-1, Kowakae, Higashi-Osaka, Osaka, 577-8502, Japan.
Chemphyschem. 2016 Sep 19;17(18):2813-7. doi: 10.1002/cphc.201600269. Epub 2016 Jul 6.
Mesoporous TiO2 nanocrystalline film was formed on fluorine-doped tin oxide electrode (TiO2 /FTO) and gold nanoparticles (NPs) of different sizes were loaded onto the surface with the loading amount kept constant (Au/TiO2 /FTO). Visible-light irradiation (λ>430 nm) of the Au/TiO2 /FTO photoanode in a photoelectrochemical cell with the structure of photoanode|0.1 m NaClO4 aqueous solution|Ag/AgCl (reference electrode)|glassy carbon (cathode) leads to the oxidation of water to oxygen (O2 ). We show that the visible-light activity of the Au/TiO2 /FTO anode increases with a decrease in Au particle size (d) at 2.9≤d≤11.9 nm due to the enhancement of the charge separation and increasing photoelectrocatalytic activity.
在氟掺杂氧化锡电极（TiO₂/FTO）上形成了介孔TiO₂纳米晶薄膜，并将不同尺寸的金纳米颗粒（NPs）负载到其表面，且负载量保持恒定（Au/TiO₂/FTO）。在具有光阳极|0.1 m NaClO₄水溶液|Ag/AgCl（参比电极）|玻碳（阴极）结构的光电化学电池中，对Au/TiO₂/FTO光阳极进行波长大于430 nm的可见光照射，会使水氧化生成氧气（O₂）。我们发现，由于电荷分离增强和光电催化活性增加，在2.9≤d≤11.9 nm范围内，Au/TiO₂/FTO阳极的可见光活性随金颗粒尺寸（d）的减小而增强。
