题目：

Thin-Layer Fe₂TiO₅ on Hematite for Efficient Solar Water Oxidation

作者：

Jiujun Deng,^† Xiaoxin Lv,^† Jinyin Liu,^† Hui Zhang,^† Kaiqi Nie,^† Caihao Hong,^‡ Jiaou Wang,^‡ Xuhui Sun,^*,† Jun Zhong,^*,† and Shuit-Tong Lee^†

单位：

^†Soochow University-Western University Centre for Synchrotron Radiation Research, Institute of Functional Nano and Soft Materials Laboratory (FUNSOM) and Collaborative Innovation Center of Suzhou Nano Science & Technology, Soochow University, Suzhou 215123, China

^‡Beijing Synchrotron Radiation Facility, Institute of High Energy Physics, Beijing 100049, China

摘要：

A thin Fe₂TiO₅ layer was produced on hematite either by evaporating a TiCl₄ solution on FeOOH or by a simple HF-assisted Ti treatment of FeOOH, both followed by annealing. The prepared Fe₂TiO₅-hematite heterostructure showed a significant enhancement in photocurrent density compared to that of the pristine hematite. For example, the sample after HF-assisted Ti treatment exhibited a significantly enhanced photocurrent of 2.0mA/cm² at 1.23 V vs RHE. Moreover, the performance of the Fe₂TiO₅-hematite heterostructure can be further improved by coupling with Co-Pi catalysts, achieving a higher photocurrent of 2.6 mA/cm² at 1.23 V vs RHE. Synchrotron-based soft X-ray absorption spectroscopy analyses clearly revealed the existence of an Fe₂TiO₅ structure on hematite forming a heterojunction, which reduced the photogenerated hole accumulation and then improved the performance.

影响因子：

13.344

分区情况：

一区

链接：

http://pubs.acs.org/doi/abs/10.1021/acsnano.5b01028