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Size and Structure Matter: Enhanced CO2 Photoreduction Efficiency by Size-Resolved Ultrafine Pt Nanoparticles on TiO2 Single Crystals

Journal Article · · Journal of the American Chemical Society
DOI:https://doi.org/10.1021/ja304075b· OSTI ID:1043688
 [1]; ;  [2];  [2]; ;  [2];
  1. Washington University in St. Louis
  2. Center for Micro/Nano Systems & Nanotechnology, University of Missouri, Columbia, Missouri 65211, United States
+ Show Author Affiliations
A facile development of highly efficient Pt-TiO2 nanostructured films via versatile gas-phase deposition methods is described. The films have a unique one-dimensional (1D) structure of TiO2 single crystals coated with ultrafine Pt nanoparticles (NPs, 0.5–2 nm) and exhibit extremely high CO2 photoreduction efficiency with selective formation of methane (the maximum CH4 yield of 1361 μmol/g-cat/h). The fast electron-transfer rate in TiO2 single crystals and the efficient electron–hole separation by the Pt NPs were the main reasons attributable for the enhancement, where the size of the Pt NPs and the unique 1D structure of TiO2 single crystals played an important role.
Research Organization:
Washington Univ., St. Louis, MO (United States)
Sponsoring Organization:
USDOE SC Office of Basic Energy Sciences (SC-22)
DOE Contract Number:
SC0001035
OSTI ID:
1043688
Report Number(s):
DE-SC0001035-55
Journal Information:
Journal of the American Chemical Society, Journal Name: Journal of the American Chemical Society Journal Issue: 27 Vol. 134; ISSN 0002-7863
Publisher:
American Chemical Society (ACS)
Country of Publication:
United States
Language:
English

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