Synthesis and characterization of hybrid materials for solar water splitting
- In this thesis, TiO\(_{2}\) surface modified with polyheptazine (TiO\(_{2}\)-PH), which was used for photoanodes for water photooxidation has been discussed. It can be prepared simply by heating TiO\(_{2}\) in a gaseous atmosphere of the pyrolysis products of urea. In contrast to pristine polyheptazine showing only weak absorption in the near visible (E\(_g\)~2.90 eV) and negligible photocurrents, the hybrids exhibit strongly red-shifted visible light absorption and significant photocurrent response, which is based on formation of interfacial charge-transfer comple\(_{2}\)-PH can be used as a good visible light absorber, oxygen evolution is still difficult due to the poor mobility of photogenerated holes. Therefore a more efficient cobalt based oxygen evolution co-catalyst Co(OH)\(_{2}\) has been discussed. The oxygen evolution performance and the stability is much better as compared to the popular cobalt based oxygen evolution co-catalyst, Co-Pi, especially in borate buffer.
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| Author: | Lidong WangGND |
|---|---|
| URN: | urn:nbn:de:hbz:294-48076 |
| Referee: | Radim BeránekGND, Martin MuhlerORCiDGND |
| Document Type: | Doctoral Thesis |
| Language: | English |
| Date of Publication (online): | 2016/04/26 |
| Date of first Publication: | 2016/04/26 |
| Publishing Institution: | Ruhr-Universität Bochum, Universitätsbibliothek |
| Granting Institution: | Ruhr-Universität Bochum, Fakultät für Chemie und Biochemie |
| Date of final exam: | 2015/12/11 |
| Creating Corporation: | Fakultät für Chemie und Biochemie |
| Tag: | Fotochemie; Sauerstoff; Wasserstoff |
| GND-Keyword: | Fotoelektrochemie; Hybridwerkstoff; Fotooxidation; Katalyse; Fotokatalyse |
| Dewey Decimal Classification: | Naturwissenschaften und Mathematik / Chemie, Kristallographie, Mineralogie |
| Licence (German): |  Keine Creative Commons Lizenz - es gelten der Veröffentlichungsvertrag und das deutsche Urheberrecht |
