Volume 58, Issue 49 pp. 17843-17848
Research Article

Long-Term Photostability in Terephthalate Metal–Organic Frameworks

Dr. Diego Mateo

Dr. Diego Mateo

Instituto Universitario de Tecnología Química CSIC-UPV, Universitat Politècnica de València, Av. De los Naranjos s/n, 46022 València, Spain

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Dr. Andrea Santiago-Portillo

Dr. Andrea Santiago-Portillo

Departamento de Química, Universitat Politècnica de València, Camino de Vera s/n, 46022 València, Spain

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Dr. Josep Albero

Dr. Josep Albero

Instituto Universitario de Tecnología Química CSIC-UPV, Universitat Politècnica de València, Av. De los Naranjos s/n, 46022 València, Spain

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Dr. Sergio Navalón

Dr. Sergio Navalón

Departamento de Química, Universitat Politècnica de València, Camino de Vera s/n, 46022 València, Spain

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Prof. Mercedes Alvaro

Prof. Mercedes Alvaro

Departamento de Química, Universitat Politècnica de València, Camino de Vera s/n, 46022 València, Spain

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Prof. Hermenegildo García

Corresponding Author

Prof. Hermenegildo García

Instituto Universitario de Tecnología Química CSIC-UPV, Universitat Politècnica de València, Av. De los Naranjos s/n, 46022 València, Spain

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First published: 04 October 2019
Citations: 52

Graphical Abstract

Upon prolonged UV/Vis irradiation (weeks) terephthalate metal–organic frameworks decompose evolving CO2. The percentage of evolved CO2 depends on the structure and composition of the MOF.

Abstract

Prolonged (weeks) UV/Vis irradiation under Ar of UiO-66(Zr), UiO66 Zr-NO2, MIL101 Fe, MIL125 Ti-NH2, MIL101 Cr and MIL101 Cr(Pt) shows that these MOFs undergo photodecarboxylation of benzenedicarboxylate (BDC) linker in a significant percentage depending on the structure and composition of the material. Routine characterization techniques such as XRD, UV/Vis spectroscopy and TGA fail to detect changes in the material, although porosity and surface area change upon irradiation of powders. In contrast to BCD-containing MOFs, zeolitic imidazolate ZIF-8 does not evolve CO2 or any other gas upon irradiation.

Conflict of interest

The authors declare no conflict of interest.

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