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Niefind, Felix ; Djamil, John ; Bensch, Wolfgang ; Srinivasan, Bikshandarkoil R. ; Sinev, Ilya ; Grünert, Wolfgang ; Deng, Mao ; Kienle, Lorenz ; Lotnyk, Andriy ; Mesch, Maria B. ; Senker, Jürgen ; Dura, Laura ; Beweries, Torsten:
Room Temperature Synthesis of an Amorphous MoS₂ Based Composite Stabilized by N-Donor Ligands and its Light-Driven Photocatalytic Hydrogen Production.
In: RSC Advances.
Bd. 5
(2015)
Heft 83
.
- S. 67742-67751.
ISSN 2046-2069
DOI: https://doi.org/10.1039/c5ra14438h
Abstract
Herein an entirely new and simple room temperature synthesis of an amorphous molybdenum sulfide stabilized by complexing ammonia and hydrazine is reported. The resulting material exhibits an outstanding activity for the photocatalytic hydrogen evolution driven by visible light. It is chemically stable during the reaction conditions of the photocatalysis and shows unusual thermal stability up to 350 degrees C without crystallization. The new material is obtained by a reaction of solid ammonium tetrathiomolybdate and gaseous hydrazine. In the as-prepared state Mo atoms are surrounded by mu(2)-briding S2-, NH3 and hydrazine, the latter being coordinated to Mo(IV) in a bridging or side-on mode. Heating at 450 degrees C or irradiation with an electron beam generates nanosized crystalline MoS2 slabs. The two modes for crystallization are characterized by distinct mechanisms for crystal growth. The stacking of the slabs is low and the material exhibits a pronounced turbostratic disorder. Heat treatment at 900 degrees C yields more ordered MoS2 but structural disorder is still present. The visible-light driven hydrogen evolution experiments evidence an outstanding performance of the as-prepared sample. The materials were thoroughly characterized by optical spectroscopy, chemical analysis, in situ HRTEM, XRD, H-1 and N-15 solid-state NMR, XPS, and thermal analysis.
Weitere Angaben
| Publikationsform: | Artikel in einer Zeitschrift |
|---|---|
| Begutachteter Beitrag: | Ja |
| Institutionen der Universität: | Fakultäten > Fakultät für Biologie, Chemie und Geowissenschaften > Fachgruppe Chemie > Lehrstuhl Anorganische Chemie III > Lehrstuhl Anorganische Chemie III - Univ.-Prof. Dr. Jürgen Senker Fakultäten Fakultäten > Fakultät für Biologie, Chemie und Geowissenschaften Fakultäten > Fakultät für Biologie, Chemie und Geowissenschaften > Fachgruppe Chemie Fakultäten > Fakultät für Biologie, Chemie und Geowissenschaften > Fachgruppe Chemie > Lehrstuhl Anorganische Chemie III |
| Titel an der UBT entstanden: | Nein |
| Themengebiete aus DDC: | 500 Naturwissenschaften und Mathematik > 540 Chemie |
| Eingestellt am: | 26 Jul 2016 12:09 |
| Letzte Änderung: | 26 Jul 2016 12:09 |
| URI: | https://eref.uni-bayreuth.de/id/eprint/33642 |