Pablo Ayala

ORCID: 0000-0002-2569-4438
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About
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Research Areas
  • Advanced Photocatalysis Techniques
  • Electrocatalysts for Energy Conversion
  • Metal-Organic Frameworks: Synthesis and Applications
  • Copper-based nanomaterials and applications
  • Advanced Nanomaterials in Catalysis
  • Nanomaterials for catalytic reactions
  • Ionic liquids properties and applications
  • Diamond and Carbon-based Materials Research
  • Metal and Thin Film Mechanics
  • Metalloenzymes and iron-sulfur proteins
  • Lubricants and Their Additives
  • Quantum Dots Synthesis And Properties
  • CO2 Reduction Techniques and Catalysts
  • Carbon dioxide utilization in catalysis
  • Polyoxometalates: Synthesis and Applications
  • Gas Sensing Nanomaterials and Sensors
  • Magnesium Oxide Properties and Applications
  • Machine Learning in Materials Science
  • TiO2 Photocatalysis and Solar Cells

TU Wien
2021-2025

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...

10.1021/acscatal.2c00972 article EN cc-by ACS Catalysis 2022-05-20

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...

10.1002/aenm.202300961 article EN cc-by Advanced Energy Materials 2023-06-22

Metal-organic framework (MOF) nanoparticles have attracted widespread attention as lubrication additives due to their tunable structures and surface effects. However, solid properties been rarely explored. This work introduces the positive role of moisture in case a newly described Ti-based MOF (COK-47) powder. COK-47 achieves an 8.5-fold friction reduction compared AISI 304 steel-on-steel sliding under room air. In addition, maintains similarly low coefficient (0.1-0.2) on various...

10.1002/advs.202415268 article EN cc-by Advanced Science 2025-01-13

A series of intermetallic Pt–Zn nanaoparticles decorated on a TiO 2 support was designed via direct vapour–solid synthesis approach, and their co-catalytic performance towards the light-driven hydrogen evolution reaction (HER) investigated.

10.1039/d5se00487j article EN cc-by Sustainable Energy & Fuels 2025-01-01

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...

10.3390/catal11040417 article EN Catalysts 2021-03-25

This study demonstrates the potential of a novel 2D-SBU COK-47-Ti MOF for visible-light-driven wastewater treatment through selective adsorption and photodegradation shows its excellent performance superior to that TiO 2 MIL-125-Ti.

10.1039/d4ta01967a article EN cc-by Journal of Materials Chemistry A 2024-01-01

In water purification technologies, long-term stability of metal-organic frameworks (MOFs) in aqueous environments is essential for practical development. This research introduces a novel synthesis approach using dual ligands to fabricate mixed-coordination Cu-based MOFs: Cu2(Hbtc)2(bpe)2 (TUW-1) and Cu2(Hbtc)2(4,4’-bipy)2(H2O)2] (TUW-2). Both maintain their structural integrity at least 365 days under various conditions. Additionally, they exhibit remarkable nitrate adsorption capacity...

10.26434/chemrxiv-2024-z9pvs preprint EN cc-by-nc-nd 2024-08-20

Abstract Thermal treatments can have detrimental effects on the photocatalytic hydrogen (H 2 ) evolution performance and impact formation mechanism of active state surface‐supported co‐catalysts. In this work, a range Ni‐based co‐catalysts is investigated immobilized TiO , evaluated their H rates in situ over 21 h, analyzed samples at various stages with comprehensive set spectroscopic microscopy techniques. It found that achieving optimal (HER) requires right Ni 0 :Ni 2+ ratio, rather than...

10.1002/admi.202300695 article EN cc-by Advanced Materials Interfaces 2023-12-04

This study investigates the hydrogen evolution reaction (HER) efficiency of two photosystems incorporating an all-inorganic molecular thiomolybdate [Mo 3 S 13 ] 2− cluster as a HER catalyst.

10.1039/d3se01658g article EN cc-by Sustainable Energy & Fuels 2024-01-01

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.

10.1039/d1ta90213j article EN cc-by Journal of Materials Chemistry A 2021-01-01

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.

10.1002/aenm.202370133 article EN Advanced Energy Materials 2023-08-01
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