Department of Chemistry, National Chung Hsing University, Taichung 40227, Taiwan, Republic of China.
Sci Rep. 2017 Feb 10;7:42524. doi: 10.1038/srep42524.
In this study, an anatase/rutile mixed-phase titanium dioxide (TiO) hierarchical network deposited with Au nanoparticles (Au/TiO ARHN) was synthesized using a facile hydrothermal method followed by a simple calcination step. Such a unique structure was designed for improving the light harvest, charge transportation/separation, and the performance of photo-electro-chemical (PEC) cells. The properties of the as-synthesized Au/TiO ARHN in PEC cells were investigated by electrochemical measurements using a three-electrode system in a 1 M NaOH electrolyte. Remarkably, a 4.5-folds enhancement of the photocurrent for Au/TiO ARHN was observed as compared to that for TiO nanowire (NW), under AM1.5G solar illumination, suggesting its potential application in PEC cells. A mechanism has been proposed to explain the high photocurrent of Au/TiO ARHN in PEC water splitting.
在这项研究中，采用简便的水热法和简单的煅烧步骤，合成了具有金纳米粒子（Au/TiO ARHN）的锐钛矿/金红石混合相二氧化钛（TiO）分级网络。这种独特的结构旨在提高光捕获、电荷传输/分离以及光电化学（PEC）电池的性能。使用三电极系统在 1 M NaOH 电解质中进行电化学测量，研究了合成的 Au/TiO ARHN 在 PEC 电池中的性能。值得注意的是，与 TiO 纳米线（NW）相比，Au/TiO ARHN 在 AM1.5G 太阳光照下的光电流增强了 4.5 倍，表明其在 PEC 电池中有潜在的应用。提出了一种机制来解释 Au/TiO ARHN 在 PEC 水分解中的高光电流。
