State Key Laboratory of Silicon Materials, School of Materials Science and Engineering, Cyrus Tang Center for Sensor Materials and Application, Zhejiang University, Hangzhou, 310027, China.
Center of Electron Microscope, School of Materials Science and Engineering, Zhejiang University, Hangzhou, 310027, China.
Small. 2017 Apr;13(16). doi: 10.1002/smll.201604115. Epub 2017 Feb 20.
An ethanol solvothermal route has been developed to prepare ultrathin anatase TiO nanosheets with dominant {001} facets (≈97%), a thickness of ≈2.5 nm, and a side length of ≈200 nm. The introduction of ethanol solvent significantly enhances the content of surface chemisorbed F on the TiO nanosheet, which has a higher stability and further lowers the surface energy of {001} facets, giving rise to the large percentage of active {001} facets. Adopting well-defined morphology, such nanosheets loaded with 1 wt% Pt exhibit an H evolution rate as high as 17.86 mmol h g , and the corresponding apparent quantum efficiency has been determined to be 34.2%.
已开发出一种乙醇溶剂热法来制备具有占主导地位的 {001} 面（≈97%）、厚度约为 2.5nm、边长约为 200nm 的超薄锐钛矿 TiO 纳米片。引入乙醇溶剂可显著提高 TiO 纳米片表面化学吸附 F 的含量，从而提高其稳定性，并进一步降低 {001} 面的表面能，导致活性 {001} 面的比例较高。采用这种形貌明确的纳米片负载 1wt%Pt，其 H 2 析出速率高达 17.86mmol h g -1 ，并确定其相应的表观量子效率为 34.2%。
