Solid State Sciences, ( ISI ), Volume (106), No (1), Year (2020-8) , Pages (106292-106313)

Title : ( A facile and efficient approach to increase the magnetic property of MOF-5 )

Authors: mehrzad arjmandi , Ali Altaee , Abolfazl Arjmandi , Mahdi Pourafshari Chenar , Majid Peyravi , Mohsen Jahanshahi ,

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Abstract

In this study, a facile and efficient approach to increase the magnetic property of metal organic framework-5 (MOF-5) has been investigated. The basis of this approach is the encapsulation of cluster-oxygen composition (i.e. ZnO in MOF-5) during the synthesis process of MOF-5 to form ZnO@MOF-5 nanocrystals. Both MOF-5 and ZnO@MOF-5 were synthesized for comparison purposes, considering their magnetic property. The physicochemical properties of MOF-5 and ZnO@MOF-5 were characterized by XRD, FTIR, TGA, DLS, FESEM, and Magnetization measurements. The FTIR spectra confirmed the presence of additional ZnO molecules in the ZnO@MOF-5 structure. Results from the XRD showed that the presence of additional ZnO molecules in the ZnO@MOF-5 altered the structure of MOF-5. The TGA analysis also confirmed the presence of additional ZnO molecules in the ZnO@MOF-5 structure, indicating that the ZnO@MOF-5 contains 15.23 wt% ZnO more than MOF-5. The FESEM and DLS results showed that the average sizes of MOF-5 and ZnO@MOF-5 nanocrystals are below 100 nm, with no defined morphology. Finally, the magnetization measurements showed that the MOF-5 nanocrystals have diamagnetic properties. For ZnO@MOF-5 nanocrystals, a ferromagnetic-like character was observed in the scanned field range and the saturation value of about 2.59×10-3 emu/g was obtained. The success of this facile and hassle-free approach can be an important step towards enhancing the magnetic properties of MOFs.

Keywords

, MOF-5, ZnO, magnetic, organic ligand
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@article{paperid:1079911,
author = {Arjmandi, Mehrzad and علی الطایی and ابوالفضل ارجمندی and Pourafshari Chenar, Mahdi and مجید پیروی and محسن جهانشاهی},
title = {A facile and efficient approach to increase the magnetic property of MOF-5},
journal = {Solid State Sciences},
year = {2020},
volume = {106},
number = {1},
month = {August},
issn = {1293-2558},
pages = {106292--106313},
numpages = {21},
keywords = {MOF-5; ZnO; magnetic; organic ligand},
}

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%0 Journal Article
%T A facile and efficient approach to increase the magnetic property of MOF-5
%A Arjmandi, Mehrzad
%A علی الطایی
%A ابوالفضل ارجمندی
%A Pourafshari Chenar, Mahdi
%A مجید پیروی
%A محسن جهانشاهی
%J Solid State Sciences
%@ 1293-2558
%D 2020

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