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3D CNT macrostructure synthesis catalyzed by MgFe2O4 nanoparticles—A study of surface area and spinel inversion influence

Zampiva, Rúbia Young Sun and Kaufmann Junior, Claudir Gabriel and Pinto, Juliano Schorne and Panta, Priscila Chaves and Alves, Annelise Kopp and Bergmann, Carlos Pérez 3D CNT macrostructure synthesis catalyzed by MgFe2O4 nanoparticles—A study of surface area and spinel inversion influence. (2017) Applied Surface Science, 422. 321-330. ISSN 0169-4332

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Official URL: https://doi.org/10.1016/j.apsusc.2017.06.020

Abstract

The MgFe2O4 spinel exhibits remarkable magnetic properties that open up numerous applications in biomedicine, the environment and catalysis. MgFe2O4 nanoparticles are excellent catalyst for carbon nanotube (CNT) production. In this work, we proposed to use MgFe2O4 nanopowder as a catalyst in the production of 3D macroscopic structures based on CNTs. The creation of these nanoengineered 3D architectures remains one of the most important challenges in nanotechnology. These systems have high potential as supercapacitors, catalytic electrodes, artificial muscles and in environmental applications. 3D macrostructures are formed due to an elevated density of CNTs. The quantity and quality of the CNTs are directly related to the catalyst properties. A heat treatment study was performed to produce the most effective catalyst. Factors such as superficial area, spinel inversion, crystallite size, degree of agglomeration and its correlation with van der Waals forces were examined. As result, the ideal catalyst properties for CNT production were determined and high-density 3D CNT macrostructures were produced successfully.

Item Type:Article
HAL Id:hal-01907321
Audience (journal):International peer-reviewed journal
Uncontrolled Keywords:
Institution:French research institutions > Centre National de la Recherche Scientifique - CNRS (FRANCE)
Université de Toulouse > Institut National Polytechnique de Toulouse - INPT (FRANCE)
Other partners > Universidade Federal do Rio Grande do Sul - UFRGS (BRAZIL)
Université de Toulouse > Université Toulouse III - Paul Sabatier - UPS (FRANCE)
Other partners > Universidade La Salle (BRAZIL)
Laboratory name:
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Deposited By: Loetitia MOYA
Deposited On:23 Oct 2018 08:43

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