Details
| Original language | English |
|---|---|
| Pages (from-to) | 12792-12809 |
| Number of pages | 18 |
| Journal | The Journal of Physical Chemistry C |
| Volume | 122 |
| Issue number | 24 |
| Early online date | 24 May 2018 |
| Publication status | Published - 21 Jun 2018 |
Abstract
Acetic acid in aqueous suspensions of co-catalyst-loaded TiO 2 was photocatalytically converted into carbon dioxide, molecular hydrogen, methane, and ethane. The formed amounts of CO 2 were found to increase in the order Ag/TiO 2 < Au/TiO 2 < Rh/TiO 2 < RuO 2/TiO 2 < IrO 2/TiO 2 < Pt/TiO 2, thus indicating that the metal oxides employed here are suitable co-catalysts to promote the photocatalytic conversion of acetic acid. The same sequence of activities was found for methane evolution but not for the formation of H 2. The evolved amounts of these products as well as the amount distribution were found to be strongly affected by the initial concentration of the organic acid and by the co-catalyst. A large value of the work function of the employed co-catalyst seems to favor H 2 evolution. Gaseous mixtures rich in hydrocarbons are photocatalytically produced at sufficiently high initial concentrations of acetic acid employing a composite photocatalyst, where the co-catalyst has a low value of the work function, such as IrO 2 and Ag.
ASJC Scopus subject areas
- Materials Science(all)
- Electronic, Optical and Magnetic Materials
- Energy(all)
- General Energy
- Chemistry(all)
- Physical and Theoretical Chemistry
- Materials Science(all)
- Surfaces, Coatings and Films
Cite this
- Standard
- Harvard
- Apa
- Vancouver
- BibTeX
- RIS
In: The Journal of Physical Chemistry C, Vol. 122, No. 24, 21.06.2018, p. 12792-12809.
Research output: Contribution to journal › Article › Research › peer review
}
TY - JOUR
T1 - Photocatalytic Reforming of Aqueous Acetic Acid into Molecular Hydrogen and Hydrocarbons over Co-catalyst-Loaded TiO2
T2 - Shifting the Product Distribution
AU - Hamid, Saher
AU - Dillert, Ralf
AU - Bahnemann, Detlef W.
N1 - © 2018 American Chemical Society
PY - 2018/6/21
Y1 - 2018/6/21
N2 - Acetic acid in aqueous suspensions of co-catalyst-loaded TiO 2 was photocatalytically converted into carbon dioxide, molecular hydrogen, methane, and ethane. The formed amounts of CO 2 were found to increase in the order Ag/TiO 2 < Au/TiO 2 < Rh/TiO 2 < RuO 2/TiO 2 < IrO 2/TiO 2 < Pt/TiO 2, thus indicating that the metal oxides employed here are suitable co-catalysts to promote the photocatalytic conversion of acetic acid. The same sequence of activities was found for methane evolution but not for the formation of H 2. The evolved amounts of these products as well as the amount distribution were found to be strongly affected by the initial concentration of the organic acid and by the co-catalyst. A large value of the work function of the employed co-catalyst seems to favor H 2 evolution. Gaseous mixtures rich in hydrocarbons are photocatalytically produced at sufficiently high initial concentrations of acetic acid employing a composite photocatalyst, where the co-catalyst has a low value of the work function, such as IrO 2 and Ag.
AB - Acetic acid in aqueous suspensions of co-catalyst-loaded TiO 2 was photocatalytically converted into carbon dioxide, molecular hydrogen, methane, and ethane. The formed amounts of CO 2 were found to increase in the order Ag/TiO 2 < Au/TiO 2 < Rh/TiO 2 < RuO 2/TiO 2 < IrO 2/TiO 2 < Pt/TiO 2, thus indicating that the metal oxides employed here are suitable co-catalysts to promote the photocatalytic conversion of acetic acid. The same sequence of activities was found for methane evolution but not for the formation of H 2. The evolved amounts of these products as well as the amount distribution were found to be strongly affected by the initial concentration of the organic acid and by the co-catalyst. A large value of the work function of the employed co-catalyst seems to favor H 2 evolution. Gaseous mixtures rich in hydrocarbons are photocatalytically produced at sufficiently high initial concentrations of acetic acid employing a composite photocatalyst, where the co-catalyst has a low value of the work function, such as IrO 2 and Ag.
UR - http://www.scopus.com/inward/record.url?scp=85047653822&partnerID=8YFLogxK
U2 - 10.1021/acs.jpcc.8b02691
DO - 10.1021/acs.jpcc.8b02691
M3 - Article
VL - 122
SP - 12792
EP - 12809
JO - The Journal of Physical Chemistry C
JF - The Journal of Physical Chemistry C
SN - 1932-7455
IS - 24
ER -