Upconversion-agent induced improvement of g-C3N4 photocatalyst under visible light
- Herein, we report the use of upconversion agents to modify graphite carbon nitride (g-C3N4) by direct thermal condensation of a mixture of ErCl3 center dot 6H(2)O and the supramolecular precursor cyanuric acid-melamine. We show the enhancement of g-C3N4 photoactivity after Er3+ doping by monitoring the photodegradation of Rhodamine B dye under visible light. The contribution of the upconversion agent is demonstrated by measurements using only a red laser. The Er3+ doping alters both the electronic and the chemical properties of g-C3N4. The Er3+ doping reduces emission intensity and lifetime, indicating the formation of new, nonradiative deactivation pathways, probably involving charge-transfer processes.
| Author details: | Jingsan Xu, Thomas J. K. Brenner, Zupeng ChenORCiDGND, Dieter NeherORCiDGND, Markus AntoniettiORCiDGND, Menny Shalom |
|---|---|
| DOI: | https://doi.org/10.1021/am5051263 |
| ISSN: | 1944-8244 |
| Pubmed ID: | https://pubmed.ncbi.nlm.nih.gov/25238039 |
| Title of parent work (English): | ACS applied materials & interfaces |
| Publisher: | American Chemical Society |
| Place of publishing: | Washington |
| Publication type: | Article |
| Language: | English |
| Year of first publication: | 2014 |
| Publication year: | 2014 |
| Release date: | 2017/03/27 |
| Tag: | RhB photodegradation; carbon nitride; metal-free photocatalysis; upconversion |
| Volume: | 6 |
| Issue: | 19 |
| Number of pages: | 6 |
| First page: | 16481 |
| Last Page: | 16486 |
| Funding institution: | Minerva Fellowship; Helmholtz Energy Alliance ("Hybrid Photovoltaics") |
| Organizational units: | Mathematisch-Naturwissenschaftliche Fakultät / Institut für Physik und Astronomie |
| Peer review: | Referiert |
