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Utilizing mixed-linker zirconium based metal-organic frameworks to enhance the visible light photocatalytic oxidation of alcohol

TitleUtilizing mixed-linker zirconium based metal-organic frameworks to enhance the visible light photocatalytic oxidation of alcohol
Publication TypeJournal Article
Year of Publication2015
AuthorsGoh, TW, Xiao, CX, Maligal-Ganesh, RV, Li, XL, Huang, WK
JournalChemical Engineering Science
Volume124
Pagination45-51
Date Published03
Type of ArticleArticle
ISBN Number0009-2509
Accession NumberWOS:000349447000006
Keywordscatalysis, functional-groups, heterogeneous, isoreticular mofs, mechanisms, oxidation of alcohol, Photocatalysis, reduction, selective, stability, tio2, UiO-66, Visible light, water
Abstract

A series of mixed-linker zirconium-based metal-organic frameworks (Zr-MOFs) have been synthesized in one-pot reactions. The Zr-MOFs, containing 2-amino-1,4-benzeneclicarboxylate (NH2-BDC) as the primary linker and 2-X-1,4-bezenedicarboxylate (X-BDC, X=H, F, Cl, Br) as a secondary linker, have been used as visible light photocatalysts. The incorporation of multi-functional groups into the catalysts was characterized by PXRD, STEM, NMR, N-2 physisorption, diffuse reflectance FT1R, and diffuse reflectance UV-vis. The effects of different linkers on the photocatalytic property of the Zr-MOFs were evaluated in the oxidation of benzyl alcohol. The photocatalytic oxidation reaction was performed using a 26 W helical bulb as the visible light source, and the temperature of the reaction was kept at 80 degrees C. The Zr-MOF containing mixed NH2-BDC and F-BDC linkers gives five times more conversion in the oxidation of benzyl alcohol compared to the Zr-MOF made of mixed NH2-BDC and H-BDC linkers. We only observed partial oxidation product, benzaldehyde, from the photocatalytic oxidation reaction. (C) 2014 Elsevier Ltd. All rights reserved

DOI10.1016/j.ces.2014.08.052
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