Ultrasound-assisted synthesis and characterization of a new metal-organic framework based on azobenzene-4,4-dicarboxylic acid: precursor for the fabrication of Co3O4 nano-particles

Parsa, Fatemeh, Ghorbanloo, Massomeh, Masoomi, Mohammad Yaser, Morsali, Ali, Junk, Peter C., and Wang, Jun (2018) Ultrasound-assisted synthesis and characterization of a new metal-organic framework based on azobenzene-4,4-dicarboxylic acid: precursor for the fabrication of Co3O4 nano-particles. Ultrasonics Sonochemistry, 45. pp. 197-203.

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Abstract

Azobenzene groups are widely known as photochromic ligands thus are particularly interesting building blocks for designing receptors for neutral or charged guests. A new metal-organic framework, [Co3(adc)3(DMF)4].2DMF (compound 1) (adc = azobenzene-4,4-dicarboxylic acid, DMF = N,N-dimethylformamide), was synthesized by solvothermal methods and structurally characterized using X-ray crystallography and a range of spectroscopic techniques. Also, nanorods of compound 1 have been synthesized by a sonochemical process and characterized by field emission scanning electron microscopy (FE-SEM) and powder X-ray diffraction (PXRD). The effect of sonication time and concentration of the initial reagents on the size and morphology of the MOF have been optimized. Results indicate that decreasing of initial concentration and increasing ultrasound radiation time lead to small size nanorods of compound 1. Thus, ultrasound radiation affects the size of nanorods. After heat treatment, the cobalt ion-based metal organic framework nanorods can be converted into porous Co3O4 nanoparticles.

Item ID: 54018
Item Type: Article (Research - C1)
ISSN: 1873-2828
Keywords: Metal-organic framework, Sonochemical, Ultrasound, Nano-structure, Single crystal X-ray diffraction
Copyright Information: © 2018 Elsevier B.V. All rights reserved.
Date Deposited: 13 Jun 2018 07:36
FoR Codes: 03 CHEMICAL SCIENCES > 0303 Macromolecular and Materials Chemistry > 030302 Nanochemistry and Supramolecular Chemistry @ 50%
03 CHEMICAL SCIENCES > 0399 Other Chemical Sciences > 039904 Organometallic Chemistry @ 50%
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