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Pore-Steric Photocatalytic Enhancement in Isoreticular Rod-Packed Titania Metal-Organic Frameworks

preprint
submitted on 24.01.2020 and posted on 27.01.2020 by Demetrius Vazquez, Matthew W. Logan, Zhihengyu Chen, Nijamudheen Abdulrahiman, Wesley Newsome, Gisselle Pombar, James K. Harper, Jose Mendoza-Cortes, Karena W. Chapman, Fernando Uribe-Romo
Titania metal-organic frameworks (MOFs) are attractive materials for noble-metal-free heterogeneous photocatalysis because of their tunable photoredox activity. In this work, we present the effect of decreased pore-steric interference in photocatalysis by creating a new series of MOFs via isoreticular expansion. These new UCFMOFs pack in a hex rod net, are composed of 1-dimensional titania secondary building units and organic links of increased metrics, exhibiting pore apertures with expanded sizes and increased photocatalytic kinetics. Powder based crystallography, in tandem with local structure, gas adsorption, and DFT studies, enabled elucidation of their crystal, steric, and electronic structures that explain their increased photocatalytic efficiency towards mild oxidation of organic probes.

Funding

CHE-1665277

CHE-1455159

DE-AC02-06CH11357

History

Email Address of Submitting Author

vazquez-dimi@knights.ucf.edu

Institution

University of Central Florida

Country

United States

ORCID For Submitting Author

0000-0003-1986-3028

Declaration of Conflict of Interest

No conflict of interest declared by authors

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