LAYERED SILICATE AS A MATRIX FOR GRAPHENE

1 KULHÁNKOVÁ Lenka
Co-authors:
2,3 TOKARSKÝ Jonáš 4 ČAPKOVÁ Pavla 2 MAMULOVÁ KUTLÁKOVÁ Kateřina 2,3 PEIKERTOVÁ Pavlína 2 NEUWIRTHOVÁ Lucie 1 BEŇO Jaroslav 5 STÝSKALA Vítězslav
Institutions:
1 VSB - Technical University of Ostrava, Faculty of Metallurgy and Materials Engineering Ostrava, Czech Republic, EU
2 VSB - Technical University of Ostrava, Ostrava, Nanotechnology Centre, Czech Republic, EU
3 VSB - Technical University of Ostrava, IT4 Innovations Centre of Excellence, Ostrava, Czech Republic, EU
4 J. E. Purkyně University in Ústí nad Labem, Faculty of Science, Ústí nad Labem, Czech Republic, EU
5 VSB - Technical University of Ostrava, Faculty of Electrical Engineering and Computer Science, Ostrava, Czech Republic, EU
Conference:
7th International Conference on Nanomaterials - Research & Application, Hotel Voronez I, Brno, Czech Republic, EU, October 14th - 16th 2015
Proceedings:
Proceedings 7th International Conference on Nanomaterials - Research & Application
Pages:
116-121
ISBN:
978-80-87294-59-8
ISSN:
2694-930X
Published:
11th January 2016
Proceedings of the conference were published in Web of Science and Scopus.
Metrics:
34 views / 7 downloads
Abstract

Montmorillonite was found to be useful matrix for the direct preparation of graphene sheets from conducting polyaniline in the interlayer space of montmorillonite. Oxidative polymerization of the solution of anilinium sulfate by ammonium peroxydisulfate in the presence of montmorillonite particles led to the formation of polyaniline chains both on the surface (revealed by SEM analysis) and in the interlayer space of montmorillonite (proved by a combination of X-ray diffraction analysis and molecular modeling). SEM analysis also showed that superfluous polyaniline created an independent cluster between montmorillonite particles. Such prepared powder material was pressed into tablets using pressure 400 MPa and these tablets were calcined in dynamic argon atmosphere at temperature 1400°C for 1 hour. X-ray diffraction analysis revealed that calcination induced phase transformation of montmorillonite into cristobalite and mullite preserving the layered structure and thus creating good conditions for formation of graphene from polyaniline chains between the silicate layers.

Keywords: montmorillonite, polyaniline, nanocomposite, calcination, graphene
Scroll to Top