dc.identifier.uri |
http://dx.doi.org/10.15488/2185 |
|
dc.identifier.uri |
http://www.repo.uni-hannover.de/handle/123456789/2210 |
|
dc.contributor.author |
Kandiel, Tarek A.
|
|
dc.contributor.author |
Ismail, Adel A.
|
|
dc.contributor.author |
Bahnemann, Detlef W.
|
|
dc.date.accessioned |
2017-11-01T09:25:04Z |
|
dc.date.available |
2017-11-01T09:25:04Z |
|
dc.date.issued |
2011 |
|
dc.identifier.citation |
Kandiel, T.A.; Ismail, A.A.; Bahnemann, D.W.: Mesoporous TiO2 nanostructures: A route to minimize Pt loading on titania photocatalysts for hydrogen production. In: Physical Chemistry Chemical Physics 13 (2011), Nr. 45, S. 20155-20161. DOI: https://doi.org/10.1039/c1cp22612f |
|
dc.description.abstract |
Mesostructured TiO2 nanocrystals have been prepared using Pluronic F127 as the structure-directing agent. Platinum nanoparticles at different contents (0.1-1.0 wt%) have been photochemically deposited onto the mesoporous TiO2. TEM investigation of 0.2 wt% Pt/TiO2 calcined at 450 °C reveals that the TiO2 particles are quite uniform in size and shape with the particle sizes of TiO2 and Pt being 10 and 3 nm, respectively. The photocatalytic activities of the Pt loaded TiO2 have been assessed and compared with those of nonporous commercial Pt/TiO2-P25 by determining the rates and the photonic efficiencies of molecular hydrogen production from aqueous methanol solutions. The results show that the amount of hydrogen evolved on Pt/TiO2-450 at low Pt loading (0.2 wt%) is three times higher than that evolved on Pt/TiO2-P25 and twelve times higher than that evolved on Pt/TiO 2-350. Despite the BET surface area of the TiO2-450 photocatalyst being 3.5 times higher than that of TiO2-P25, a 60% smaller amount of the Pt co-catalyst is required to obtain the optimum photocatalytic hydrogen production activity. The reduced Pt loading on the mesoporous TiO2 will be important both from a commercial and an ecological point of view. © 2011 the Owner Societies. |
eng |
dc.language.iso |
eng |
|
dc.publisher |
Cambridge : Royal Society of Chemistry |
|
dc.relation.ispartofseries |
Physical Chemistry Chemical Physics 13 (2011), Nr. 45 |
|
dc.rights |
Es gilt deutsches Urheberrecht. Das Dokument darf zum eigenen Gebrauch kostenfrei genutzt, aber nicht im Internet bereitgestellt oder an Außenstehende weitergegeben werden. Dieser Beitrag ist aufgrund einer (DFG-geförderten) Allianz- bzw. Nationallizenz frei zugänglich. |
|
dc.subject |
TiO2 |
eng |
dc.subject |
nanocrystals |
eng |
dc.subject |
Platinum nanoparticles |
eng |
dc.subject |
small angle X-ray diffraction (SXRD) |
eng |
dc.subject.ddc |
540 | Chemie
|
ger |
dc.title |
Mesoporous TiO2 nanostructures: A route to minimize Pt loading on titania photocatalysts for hydrogen production |
|
dc.type |
Article |
|
dc.type |
Text |
|
dc.relation.issn |
1463-9076 |
|
dc.relation.doi |
https://doi.org/10.1039/c1cp22612f |
|
dc.bibliographicCitation.issue |
45 |
|
dc.bibliographicCitation.volume |
13 |
|
dc.bibliographicCitation.firstPage |
20155 |
|
dc.bibliographicCitation.lastPage |
20161 |
|
dc.description.version |
publishedVersion |
|
tib.accessRights |
frei zug�nglich |
|