Collaborative Innovation Center for Chemical Science & Engineering (Tianjin), Tianjin Key Laboratory of Applied Catalysis Science & Engineering, School of Chemical Engineering & Technology, Tianjin University , Tianjin 30072, P. R. China.
Shanghai Synchrotron Radiation Facility, Shanghai Institute of Applied Physics, Chinese Academy of Sciences , Shanghai 201204, P. R. China.
ACS Appl Mater Interfaces. 2015 Nov 18;7(45):24987-92. doi: 10.1021/acsami.5b07318. Epub 2015 Nov 9.
Hydrogenation of semiconductors is an efficient way to increase their photocatalytic activity by forming disorder-engineered structures. Herein, we report a facile hydrogenation process of TiO2(B) nanobelts to in situ generate TiO2(B)-anatase heterophase junction with a disordered surface shell. The catalyst exhibits an excellent performance for photocatalytic hydrogen evolution under the simulated solar light irradiation (∼580 μmol h(-1), 0.02 g photocatalyst). The atomically well-matched heterophase junction, along with the disorder-engineered surface shell, promotes the separation of electron-hole and inhibits their recombination. This strategy can be further employed to design other disorder-engineered composite photocatalysts for solar energy utilization.
半导体氢化是一种通过形成无序工程结构来提高光催化活性的有效方法。在此，我们报告了一种简便的 TiO2(B)纳米带氢化方法，可原位生成具有无序表面壳的 TiO2(B)-锐钛矿异质结。该催化剂在模拟太阳光照射下表现出优异的光催化析氢性能（∼580 μmol h(-1)，0.02 g 光催化剂）。原子级匹配的异质结和无序工程表面壳促进了电子-空穴的分离，并抑制了它们的复合。该策略可进一步用于设计其他用于太阳能利用的无序工程复合光催化剂。
