EFFECT OF PROCESSING TEMPERATURE ON THE PHOTOCATALYTIC ACTIVITY OF G-C3N4/MONTMORILLONITE COMPOSITES

1,2 KULHÁNKOVÁ Lenka
Co-authors:
1 PRAUS Petr 1 PAVLOVSKÝ Jiří 1 RITZ Michal 2 ŠIHOR Marcel 2 KOČÍ Kamila 3 MAMULOVÁ KUTLÁKOVÁ Kateřina
Institutions:
1 Faculty of Metallurgy and Materials Engineering, VSB – Technical University of Ostrava, Ostrava, Czech Republic, EU, lenka.kulhankova@vsb.cz , petr.praus@vsb.cz , jiri.pavlovsky@vsb.cz , michal.ritz@vsb.cz
2 Institute of Environmental Technology, VSB - Technical University of Ostrava, Ostrava, Czech Republic, EU lenka.kulhankova@vsb.cz, marcel.sihor@vsb.cz , kamila.koci@vsb.cz
3 Nanotechnology Centre, VSB - Technical University of Ostrava, Ostrava, Czech Republic, EU katerina.mamulova.kutlakova@vsb.cz
Conference:
9th International Conference on Nanomaterials - Research & Application, Hotel Voronez I, Brno, Czech Republic, EU, October 18th - 20th 2017
Proceedings:
Proceedings 9th International Conference on Nanomaterials - Research & Application
Pages:
339-345
ISBN:
978-80-87294-81-9
ISSN:
2694-930X
Published:
8th March 2018
Proceedings of the conference were published in Web of Science and Scopus.
Metrics:
119 views / 44 downloads
Abstract

The aim of the present work was the preparation of photoactive composites of g-C3N4/MMT type. In this work, g-C3N4/MMT photocatalysts were prepared by thermal polycondensation of the mechanical mixture of melamine and MMT at different temperatures (450, 550, 600, 620, 650, and 700°C). Using wide range of analytical methods (X-ray diffraction, infrared spectroscopy, diffuse reflectance spectroscopy, and photoluminescence) a significant differences in crystalline structure, morphology, and optical properties between the prepared composites were found. Furthermore, composites prepared at 550-650 °C were tested for the photocatalytic decomposition of N2O. Photocatalytic experiments showed very similar activity of all samples synthesized at 550-650°C. The best photoactivity was exhibited by the sample prepared at the highest temperature (620°C and 650°C). The N2O conversion in presence of sample prepared at 620°C and 650°C was 45 % after 20 hours of UVA irradiation.

Keywords: melamine, g–C3N4, montmorillonite, composites, photocatalytic activity

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