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ZnO as an efficient nucleating agent for rapid, room temperature synthesis and patterning of Zn-based metal–organic frameworks

Zanchetta, Erika and Malfatti, Luca and Ricco, Raffaele and Styles, Mark J. and Lisi, Fabio and Coghlan, Campbell J. and Doonan, Christian J. and Hill, Anita J. and Brusatin, Giovanna and Falcaro, Paolo (2015) ZnO as an efficient nucleating agent for rapid, room temperature synthesis and patterning of Zn-based metal–organic frameworks. Chemistry of Materials, Vol. 27 (3), p. 690-699. ISSN 0897-4756. eISSN 1520-5002. Article.

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DOI: 10.1021/cm502882a

Abstract

The use of ZnO particles as efficient agents for seeding, growing, and precisely positioning metal–organic frameworks (MOFs) is described. Ceramic seeds have been successfully used for the preparation of Zn-based MOFs with a number of different carboxylic acids: terephthalic acid, 2-aminoterephthalic acid, 1,3,5-benzenetricarboxylic acid, 2,6-naphthalenedicarboxylic acid, and 4,4′-biphenyldicarboxylic acid. In situ synchrotron small-angle X-ray scattering and electron microscopy experiments were employed to determine the effect of the concentration of ZnO nanoparticles, temperature, and time on MOF growth. Under optimized conditions, MOF crystals were found to form in several minutes. This unprecedented capacity to seed MOF formation was used to control the growth of crystals in precise locations. Accordingly, we employed this seeding technique to position porous MOF crystals on paper strips (lateral flow), or within glass and PDMS microchannels (120 μm width and 100 μm height). These data demonstrate that ZnO nanoparticles are versatile seeding agents for the growth of porous crystals in a number of different microfluidic platforms.

Item Type:Article
ID Code:10791
Status:Published
Refereed:Yes
Uncontrolled Keywords:ZnO particles, metal–organic frameworks (MOFs), ceramic seeds
Subjects:Area 09 - Ingegneria industriale e dell'informazione > ING-IND/22 Scienza e tecnologia dei materiali
Divisions:001 Università di Sassari > 01-a Nuovi Dipartimenti dal 2012 > Architettura, Design e Urbanistica
002 Altri enti e centri di ricerca del Nord Sardegna > INSTM-Consorzio Interuniversitario Nazionale per la Scienza e la Tecnologia dei Materiali, Unità di ricerca di Sassari
Publisher:American Chemical Society
ISSN:0897-4756
eISSN:1520-5002
Deposited On:11 Feb 2015 11:10

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