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Ultrathin Anatase TiO 2 Nanosheets for High‐Performance Photocatalytic Hydrogen Production
Author(s) -
Li Ming,
Chen Ying,
Li Wei,
Li Xiang,
Tian He,
Wei Xiao,
Ren Zhaohui,
Han Gaorong
Publication year - 2017
Publication title -
small
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 3.785
H-Index - 236
eISSN - 1613-6829
pISSN - 1613-6810
DOI - 10.1002/smll.201604115
Subject(s) - anatase , nanosheet , materials science , photocatalysis , chemical engineering , solvent , hydrogen production , nanotechnology , morphology (biology) , ethanol , degradation (telecommunications) , hydrogen , catalysis , chemistry , organic chemistry , telecommunications , biology , computer science , engineering , genetics
An ethanol solvothermal route has been developed to prepare ultrathin anatase TiO 2 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 2 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 2 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%.
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