Klasovsky, Florian ; Hohmeyer, Jens ; Brückner, Angelika ; Bonifer, Marcus ; Arras, Jürgen ; Steffan, Martin ; Lucas, Martin ; Radnik, Jörg ; Roth, Christina ; Claus, Peter (2008)
Catalytic and Mechanistic Investigation of Polyaniline Supported PtO2Nanoparticles: A Combinedin situ/operandoEPR, DRIFTS, and EXAFS Study.
In: The Journal of Physical Chemistry C, 112 (49)
doi: 10.1021/jp805970e
Article, Bibliographie
Abstract
Compounds containing electrically conducting macromolecules bear interesting properties as functional materials in various fields. As for catalytic applications, however, principles are scarcely, if at all, understood. Here we describe a systematic investigation of the relationship between the structure of a new type of conducting polymer supported metal catalyst and the catalystʼs oxidation activity. We have found that nanoclusters of unusual β-PtO2 (d = (1.9 ± 0.5) nm) could be deposited on polyaniline, and the resulting catalyst exhibits exceptionally low light-off temperatures in carbon monoxide oxidation even in the presence of other environmental pollutants. Characterizing the working state of the active catalyst by combining in situ/operando techniques (EPR, DRIFTS, and EXAFS), we visualized a distinctly increased charge carrier density within the support. Our results suggest that the intensive contact between an electron-conducting polymer support and up-grown nanoparticles affords a charge exchange between redox centers, thereby boosting catalytic activity dramatically.
| Item Type: | Article |
|---|---|
| Erschienen: | 2008 |
| Creators: | Klasovsky, Florian ; Hohmeyer, Jens ; Brückner, Angelika ; Bonifer, Marcus ; Arras, Jürgen ; Steffan, Martin ; Lucas, Martin ; Radnik, Jörg ; Roth, Christina ; Claus, Peter |
| Type of entry: | Bibliographie |
| Title: | Catalytic and Mechanistic Investigation of Polyaniline Supported PtO2Nanoparticles: A Combinedin situ/operandoEPR, DRIFTS, and EXAFS Study |
| Language: | English |
| Date: | 11 December 2008 |
| Publisher: | ACS Publications |
| Journal or Publication Title: | The Journal of Physical Chemistry C |
| Volume of the journal: | 112 |
| Issue Number: | 49 |
| DOI: | 10.1021/jp805970e |
| Abstract: | Compounds containing electrically conducting macromolecules bear interesting properties as functional materials in various fields. As for catalytic applications, however, principles are scarcely, if at all, understood. Here we describe a systematic investigation of the relationship between the structure of a new type of conducting polymer supported metal catalyst and the catalystʼs oxidation activity. We have found that nanoclusters of unusual β-PtO2 (d = (1.9 ± 0.5) nm) could be deposited on polyaniline, and the resulting catalyst exhibits exceptionally low light-off temperatures in carbon monoxide oxidation even in the presence of other environmental pollutants. Characterizing the working state of the active catalyst by combining in situ/operando techniques (EPR, DRIFTS, and EXAFS), we visualized a distinctly increased charge carrier density within the support. Our results suggest that the intensive contact between an electron-conducting polymer support and up-grown nanoparticles affords a charge exchange between redox centers, thereby boosting catalytic activity dramatically. |
| Divisions: | 11 Department of Materials and Earth Sciences 11 Department of Materials and Earth Sciences > Material Science 11 Department of Materials and Earth Sciences > Material Science > Erneuerbare Energien 07 Department of Chemistry 07 Department of Chemistry > Ernst-Berl-Institut > Fachgebiet Technische Chemie 07 Department of Chemistry > Ernst-Berl-Institut > Fachgebiet Technische Chemie > Technische Chemie I |
| Date Deposited: | 22 Feb 2013 08:47 |
| Last Modified: | 19 Nov 2021 09:00 |
| PPN: | |
| Export: | |
| Suche nach Titel in: | TUfind oder in Google |
 |
Send an inquiry |
Options (only for editors)
 |
Show editorial Details |
Drucken
Impressum