Au NPs fabricated on biguanidine-modified Zr-UiO-66 MOFs: a competent reusable heterogeneous nanocatalyst in the green synthesis of propargylamines

In this study, we utilized functionalized metal organic frameworks (MOFs) as a host matrix to embed gold (Au) nanoparticles. The three-dimensional Zr-based metal-organic framework UiO-66-NH 2 was functionalized with the biguanidine moiety using a post-synthetic modification (PSM) strategy, and then...

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Bibliographic Details
Published in:New journal of chemistry 2022-02, Vol.46 (6), p.2829-2836
Main Authors: Veisi, Hojat, Sayadi, Marzieh, Morakabati, Neko, Tamoradi, Taiebeh, Karmakar, Bikash
Format: Article
Language:English
Subjects:
Aldehydes
Alkynes
Amines
Gold
Infrared spectroscopy
Metal-organic frameworks
Morphology
Nanocomposites
Nanoparticles
Spectrum analysis
Zirconium
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Summary:In this study, we utilized functionalized metal organic frameworks (MOFs) as a host matrix to embed gold (Au) nanoparticles. The three-dimensional Zr-based metal-organic framework UiO-66-NH 2 was functionalized with the biguanidine moiety using a post-synthetic modification (PSM) strategy, and then gold salt was successfully immobilized onto the surface of the biguanidine-functionalized Zr-MOF. The morphological and physicochemical features of the material were determined using several advanced techniques like FT-IR spectroscopy, SEM, TEM, EDX spectroscopy, elemental mapping, XRD and ICP-OES. The SEM, BET and XRD results showed that the morphology and structure of the Zr-MOF were retained after multiple transformations. The obtained UiO-66-bigua/Au nanocomposite exhibited excellent activity in the three-component reaction of aldehydes, amines and alkynes (A 3 coupling) with good to high yields of diverse propargylamines. Furthermore, the catalyst could be recovered and reused 8 times with no significant reduction in its activity. In this study, we utilized functionalized metal organic frameworks (MOFs) as a host matrix to embed gold (Au) nanoparticles.
ISSN:1144-0546
1369-9261
DOI:10.1039/d1nj02827h