Ultrathin Anatase TiO2 Nanosheets for High‐Performance Photocatalytic Hydrogen Production. Issue 16 (20th February 2017)

• Record Type: Journal Article
• Authors: Li, Ming; Chen, Ying; Li, Wei; Li, Xiang; Tian, He; Wei, Xiao; Ren, Zhaohui; Han, Gaorong
• Is Part Of: Small. Volume 13:Issue 16(2017)
• Page Start: n/a
• Page End: n/a
• Publication Date: 2017-02-20
• Subjects: photocatalytic hydrogen production -- TiO2 nanosheets -- ultrathin; Nanotechnology -- Periodicals; Nanoparticles -- Periodicals; Microtechnology -- Periodicals; 620.5
• DOI: 10.1002/smll.201604115
• Languages: English
• ISSNs: 1613-6810

Abstract

Abstract : An ethanol solvothermal route has been developed to prepare ultrathin anatase TiO2 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 TiO2 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 H2 evolution rate as high as 17.86 mmol h −1 g −1, and the corresponding apparent quantum efficiency has been determined to be 34.2%. Abstract : Ultrathin anatase TiO2 nanosheets of ≈2.5 nm in thickness and ≈200 nm in side‐length are prepared with an ethanol solvothermal route, giving rise to ≈97% {001} facets exposed. Such nanosheets exhibit an H2 evolution rate as high as 17.86 mmol h −1 g −1, and the corresponding apparent quantum efficiency is determined to be 34.2%.