Titlebar

Export bibliographic data
Literature by the same author
plus on the publication server
plus at Google Scholar

 

A crystalline and 3D periodically ordered mesoporous quaternary semiconductor for photocatalytic hydrogen generation

Title data

Weller, Tobias ; Deilmann, Leonie ; Timm, Jana ; Dörr, Tobias S. ; Beaucage, Peter A. ; Cherevan, Alexey S. ; Wiesner, Ulrich B. ; Eder, Dominik ; Marschall, Roland:
A crystalline and 3D periodically ordered mesoporous quaternary semiconductor for photocatalytic hydrogen generation.
In: Nanoscale. Vol. 10 (2018) Issue 7 . - pp. 3225-3234.
ISSN 2040-3364
DOI: https://doi.org/10.1039/c7nr09251b

Project information

Project financing: Deutsche Forschungsgemeinschaft

Abstract in another language

We have prepared the first crystalline and 3D periodically ordered mesoporous quaternary semiconductor photocatalyst in an evaporation-induced self-assembly assisted soft-templating process. Using lab synthesized triblock-terpolymer poly(isoprene-b-styrene-b-ethylene oxide) (ISO) a highly ordered 3D interconnected alternating gyroid morphology was achieved exhibiting near and long-range order, as evidenced by small angle X-ray scattering (SAXS) and electron microscopy (TEM/SEM). Moreover, we reveal the formation process on the phase-pure construction of the material's pore-walls with its high crystallinity, which proceeds along a highly stable W5+ compound, by both in situ and ex situ analyses, including X-ray powder diffraction (XRPD), Fourier transform infrared spectroscopy (FTIR) and electron paramagnetic resonance (EPR). The resulting photocatalyst CsTaWO6 with its optimum balance between surface area and ordered mesoporosity ultimately shows superior hydrogen evolution rates over its non-ordered reference in photocatalytic hydrogen production. This work will help to advance new self-assembly preparation pathways towards multi-element multifunctional compounds for different applications, including improved battery and sensor electrode materials.

Further data

Item Type: Article in a journal
Refereed: Yes
Institutions of the University: Faculties > Faculty of Biology, Chemistry and Earth Sciences > Department of Chemistry
Faculties
Faculties > Faculty of Biology, Chemistry and Earth Sciences
Faculties > Faculty of Biology, Chemistry and Earth Sciences > Department of Chemistry > Lehrstuhl Physikalische Chemie III > Lehrstuhl Physikalische Chemie III - Univ.-Prof. Dr. Roland Marschall
Result of work at the UBT: No
DDC Subjects: 500 Science > 540 Chemistry
Date Deposited: 05 Sep 2018 08:26
Last Modified: 30 Oct 2018 07:40
URI: https://eref.uni-bayreuth.de/id/eprint/45720