Structural and Interfacial Characterization of a Photocatalytic Titanium MOF-Phosphate Glass Composite
Metal-organic framework (MOF) composites are proposed as solutions to the mechanical instability of pure MOF materials. Here, we present a new compositional series of recently discovered MOF-crystalline inorganic glass composites. In this case, formed by the combination of a photocatalytic titanium MOF (MIL-125-NH<sub>2</sub>) and a phosphate-based glass (20%Na<sub>2</sub>O-10%Na<sub>2</sub>SO<sub>4</sub>-70%P<sub>2</sub>O<sub>5</sub>). This new family of composites has been synthesized and characterized using powder X-ray diffraction, thermal gravimetric analysis, differential scanning calorimetry, scanning electron microscopy, and X-ray total scattering. Through analysis of the pair distribution function extracted from X-ray total scattering data, the atom-atom interactions at the MOF-glass interface are described. Nitrogen and carbon dioxide isotherms demonstrate good surface area values despite the pelletization and mixing of the MOF with a dense inorganic glass. The catalytic activity of these materials was investigated in the photooxidation of amines to imines, showing the retention of the photocatalytic effectiveness of the parent pristine MOF.
Authors
- Andraž Krajnc (ORCID: https://orcid.org/0000-0003-2249-602X)
- Luis León‐Alcaide (ORCID: https://orcid.org/0000-0003-1667-0618)
- Lothar Wondraczek (ORCID: https://orcid.org/0000-0002-0747-3076)
- James Mark Alexander Steele (ORCID: https://orcid.org/0000-0002-1075-3634)
- Thomas D. Bennett (ORCID: https://orcid.org/0000-0003-3717-3119)
- Georgina P. Robertson (ORCID: https://orcid.org/0000-0002-7374-4356)
- David A. Keen (ORCID: https://orcid.org/0000-0003-0376-2767)
- Shaoliang Guan (ORCID: https://orcid.org/0000-0002-0608-6584)
- Matjaž Mazaj (ORCID: https://orcid.org/0000-0003-3196-9079)
- Philip A. Chater (ORCID: https://orcid.org/0000-0002-5513-9400)
- Ashleigh M. Chester (ORCID: https://orcid.org/0000-0003-4605-6651)
- Montaña J. García (ORCID: https://orcid.org/0000-0002-3524-1811)
- Celia Castillo‐Blas (ORCID: https://orcid.org/0009-0000-0048-5077)
- Silvia Cabrera (ORCID: https://orcid.org/0000-0002-4907-2932)
- Bruno P. Rodrigues (ORCID: https://orcid.org/0000-0003-1785-8946)
- Ayano Kono
- José Alemán (ORCID: https://orcid.org/0000-0003-0164-1777)
Institutions
- Rutherford Appleton Laboratory (GB)
- Schott (Germany) (DE)
- Universitat de València (ES)
- University of Cambridge (GB)
- Parc Científic de la Universitat de València (ES)
- Diamond Light Source (GB)
- National Institute of Chemistry (SI)
- Universidad Autónoma de Madrid (ES)
Publication Details
- Journal
- ACS Applied Materials & Interfaces
- Published
- 2025-03-04
- DOI
- https://doi.org/10.1021/acsami.4c18444
- Citations
- 4
- Primary Topic
- Metal-Organic Frameworks: Synthesis and Applications
- Type
- article
- Field-Weighted Citation Impact
- 2.15
Funders
- Carl-Zeiss-Stiftung
- Diamond Light Source
- Henry Royce Institute
- Leverhulme Trust
- Royal Society
- Javna Agencija za Raziskovalno Dejavnost RS
- Dirección para el Desarrollo de la Ciencia y el Conocimiento
- Engineering and Physical Sciences Research Council