A5073310461- Advanced Photocatalysis Techniques
- Crystallization and Solubility Studies
- Advanced Nanomaterials in Catalysis
- X-ray Diffraction in Crystallography
- Metal-Organic Frameworks: Synthesis and Applications
- Polyoxometalates: Synthesis and Applications
- Copper-based nanomaterials and applications
- Electrocatalysts for Energy Conversion
- TiO2 Photocatalysis and Solar Cells
- Chemical Synthesis and Reactions
- Vanadium and Halogenation Chemistry
- Metalloenzymes and iron-sulfur proteins
- Nanocluster Synthesis and Applications
- Mercury impact and mitigation studies
TU Wien
2020-2023
University of Vienna
2019
We synthesized a series of isostructural MIL-125-Ti with various terephthalic: amino-terephthalic acid ratios and evaluated their photostability performance for photocatalytic hydrogen evolution in aqueous solutions different hole scavengers. demonstrate that the commonly used triethanolamine corroded MOFs under conditions, contrast to methanol. The combination methanol outperformed activity NH2-MIL-125-Ti by 45 times broad UV irradiation. Photoluminescence spectroscopy simulated conditions...
Here we report a systematic study of Co, Mn, Ni and Fe oxides as co-catalysts for HER OER that were prepared by wet impregnation the corresponding metal acetylacetonate salts onto model TiO<sub>2</sub> substrate.
Achieving light-driven splitting of water with high efficiency remains a challenging task on the way to solar fuel exploration. In this work, combine advantages heterogeneous and homogeneous photosystems, we covalently anchor noble-metal- carbon-free thiomolybdate [Mo3S13]2- clusters onto photoactive metal oxide supports act as molecular co-catalysts for photocatalytic splitting. We demonstrate that strong surface-limited binding surfaces takes place. The attachment involves loss majority...
Abstract Metal‐organic frameworks (MOFs) are promising materials for photocatalytic water splitting reactions, but examples of visible light‐responsive, catalytically active, and stable MOFs still rare. A detailed investigation is conducted COK‐47 – a recently described MOF comprising 2D Ti‐O 6 secondary building units (SBUs) toward hydrogen evolution reaction (HER), showing how overall particle morphology, surface area, missing ligand defects central parameters governing the material's...
The design of active and selective co-catalysts constitutes one the major challenges in developing heterogeneous photocatalysts for energy conversion applications. This work provides a comprehensive insight into thermally induced bottom-up generation transformation series promising Cu-based co-catalysts. We demonstrate that volcano-type HER profile as function calcination temperature is independent type Cu precursor but affected by changes oxidation state location copper species. Supported...
Achieving efficient photocatalytic water splitting remains one of the most vital challenges in photocatalysis field, as performance contemporary heterogeneous catalysts is still limited by their insufficient activity and low predictability. To address this challenge, work takes inspiration from concept single-metal-site (HSMSCs) follows idea site-isolation, aiming towards single-site co-catalyst species a higher atom-utilization efficiency. We synthesized set photocatalysts through an...
The ever-growing interest in sustainable energy sources leads to a search for an efficient, stable, and inexpensive homogeneous water oxidation catalyst (WOC). Herein, the PO43- templated synthesis of three abundant-metal-based germanotungstate (GT) clusters Na15 [Ge4 PCo4 (H2 O)2 W24 O94 ] ⋅ 38H2 O (Co4 ), Na2.5 K17.5 [Ge3 PCo9 (OH)5 O)4 W30 O115 45H2 (Co9 Na6 K16 P4 Co20 (OH)14 O)18 W36 O150 61H2 (Co20 ) with non-, quasi-, or full cubane motifs structurally strongly reminiscent naturally...
The ongoing transition to renewable energy sources and the implementation of artificial photosynthetic setups call for an efficient stable water oxidation catalyst (WOC). Here, we heterogenize a molecular all-inorganic [CoIIICoII(H2O)W11O39]7- ({CoIIICoIIW11}) Keggin-type polyoxometalate (POM) onto model TiO2 surface, employing 3-aminopropyltriethoxysilane (APTES) linker form novel heterogeneous photosystem light-driven oxidation. {CoIIICoIIW11}-APTES-TiO2 hybrid is characterized using set...
Replacement of protecting ligands gold nanoclusters by ligand exchange has become an established post-synthetic tool for selectively modifying the nanoclusters' properties. Several Au are known to additionally undergo size transformations upon exchange, enabling access cluster structures that difficult obtain direct synthesis. This work reports on selective transformation Au15(SG)13 (SG: glutathione) Au16(2-PET)14 (2-PET: 2-phenylethanethiol) through a two-phase process at room temperature....
Correction for ‘Elucidating the formation and active state of Cu co-catalysts photocatalytic hydrogen evolution’ by Jasmin S. Schubert et al., J. Mater. Chem. A , 2021, DOI: 10.1039/d1ta05561e.
Hydrogen Evolution Reaction In article number 2300961, Dominik Eder and co-workers test a visible light responsive titanium-based metal-organic framework (MOF) comprised of 2D secondary building units for the hydrogen evolution reaction. It ranks amongst highest performing MOFs this challenging conversion. Upon photoexcitation, unique structure enables efficient charge separation extraction, displaying ligand to metal transfer mechanism boosting H2 formation.
The Cover Feature shows the cobalt(II)-substituted germanotungstate [Ge3PCo9(OH)5(H2O)4W30O115]20− (Co9), which was obtained by a phosphate-templated synthesis and exhibits high activity as homogeneous water oxidation catalyst. More information can be found in Full Paper E. Al-Sayed, S. P. Nandan, Tanuhadi, et al.