题目：

Fe₂TiO₅-incorporated hematite with surface P-modification for high-efficiency solar water splitting

作者：

Xiaolin Lv^a, Kaiqi Nie^a, Huiwen Lan^a, Xin Li^b, Youyong Li^a, Xuhui Sun^a,*, Jun Zhong^a,*, Shuit-Tong Lee^a,*

单位：

^a Institute of Functional Nano and Soft Materials Laboratory (FUNSOM), Jiangsu Key Laboratory for Carbon-Based Functional Materials & Devices, Soochow University, Suzhou 215123, China

^b Hefei National Laboratory for Physical Sciences at the Microscale, University of Science and Technology of China, Hefei, Anhui 230026, China

摘要：

Hematite is a promising photocatalyst for solar water splitting while its performance has been severely limited by various factors. Recently surface Fe₂TiO₅ layer was widely reported to enhance the performance of hematite with a favorable band position to facilitate hole transport. Here we further show that the Fe₂TiO₅-incorporation in bulk hematite can also improve the performance with faster charge separation. Moreover, it can be well coupled with surface P-modification to simultaneously improve charge separation and hole transfer with a synergetic effect. The Ti and P co-modified hematite shows a significantly enhanced photocurrent of 2.37 mA/cm² at 1.23 V vs. RHE when compared to the pristine value of 0.85 mA/cm². After coupling with Co-Pi catalysts, the hematite sample can even achieve a stable, high photocurrent of 2.90 mA/cm² at 1.23 V vs. RHE. The design of Ti and P co-modified hematite hollow nanostructures can be used as a promising candidate for solar water splitting applications. The discrete Fe₂TiO₅-incorporation also provides a good insight on the mechanism to understand other Ti-based treatments of hematite.

影响因子：

11.553

分区情况：

1区

链接：

http://dx.doi.org/10.1016/j.nanoen.2017.01.001

责任编辑：向丹婷 联系方式：dtxiang@suda.edu.cn