CO2 splitting by H2O to CO and O2 under UV light in TiMCM-41silicate sieve Metadata

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Title

  • Main Title CO2 splitting by H2O to CO and O2 under UV light in TiMCM-41silicate sieve

Creator

  • Author: Lin, Wenyong
    Creator Type: Personal
  • Author: Han, Hongxian
    Creator Type: Personal
  • Author: Frei, Heinz
    Creator Type: Personal

Contributor

  • Sponsor: USDOE Director. Office of Science. Office of Basic EnergySciences. Chemical Sciences Geosciences and BiosciencesDivision
    Contributor Type: Organization

Publisher

  • Name: Lawrence Berkeley National Laboratory
    Place of Publication: Berkeley, California
    Additional Info: Ernest Orlando Lawrence Berkeley National Laboratory, Berkeley, CA (United States)

Date

  • Creation: 2004-04-06

Language

  • English

Description

  • Content Description: The 266 nm light-induced reaction of CO{sub 2} and H{sub 2}O gas mixtures (including isotopic modifications {sup 13}CO{sub 2}, C{sup 18}O{sub 2}, and D{sub 2}O) in framework TiMCM-41 silicate sieve was monitored by in-situ FT-IR spectroscopy at room temperature. Carbon monoxide gas was observed as the sole product by infrared, and the growth was found to depend linearly on the photolysis laser power. H{sub 2}O was confirmed as stoichiometric electron donor. The work establishes CO as the single photon, 2-electron transfer product of CO{sub 2} photoreduction by H{sub 2}O at framework Ti centers for the first time. O{sub 2} was detected as co-product by mass spectrometric analysis of the photolysis gas mixture. These results are explained by single UV photon-induced splitting of CO{sub 2} by H{sub 2}O to CO and surface OH radical.

Subject

  • Keyword: Electrons
  • Keyword: Modifications
  • Keyword: Carbon Monoxide
  • STI Subject Categories: 37 Inorganic, Organic, Physical And Analytical Chemistry
  • Keyword: Carbon Dioxide Photocatalysis Reduction Infrared Spectroscopywater Carbon Monoxide
  • Keyword: Photolysis
  • Keyword: Spectroscopy
  • Keyword: Mixtures
  • Keyword: Lasers
  • Keyword: Binding Energy
  • Keyword: Valence Carbon Dioxide Photocatalysis Reduction Infrared Spectroscopywater Carbon Monoxide
  • Keyword: Silicates

Source

  • Journal Name: Journal of Physical Chemistry; Journal Volume: 108; Journal Issue: 47

Collection

  • Name: Office of Scientific & Technical Information Technical Reports
    Code: OSTI

Institution

  • Name: UNT Libraries Government Documents Department
    Code: UNTGD

Resource Type

  • Article

Format

  • Text

Identifier

  • Report No.: LBNL--54861
  • Grant Number: DE-AC02-05CH11231
  • DOI: 10.1021/jp040345u
  • Office of Scientific & Technical Information Report Number: 861229
  • Archival Resource Key: ark:/67531/metadc778701
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