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Design and Application of Magnetic Photocatalysts for Water Treatment. The Effect of Particle Charge on Surface

Abstract

Core-interlayer-shell Fe3O4/SiO2/TiO2, CoFe2O4/SiO2/TiO2 and BaFe12O19/SiO2/TiO2 magnetic photocatalysts were obtained. A water-in-oil microemulsion system with suitable surfactants was used for functionalization of the magnetic core with silica interlayer and TiO2-based photocatalyst. Uncoated and coated particles were characterized by electrophoretic meaurements, X-ray diffractometry (XRD), scanning electron microscopy (SEM), transmision electron microscopy (TEM), specific surface area (BET) measurements, diffuse reflectance spectroscopy (DRS) and vibrating sample magnetometer (VSM) analysis. The pH of the solution and corresponding zeta potential was found to be essential for appropriate formation of ferrite core/silica layer/TiO2 shell nanocomposite, since the electrical charge controls interactions during functionalization of the magnetic core particles.

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Details

Category:
Magazine publication
Type:
artykuł w czasopiśmie wyróżnionym w JCR
Published in:
Catalysts no. 7, pages 1 - 18,
ISSN: 2073-4344
Language:
English
Publication year:
2017
Bibliographic description:
Zielińska-Jurek A., Bielan Z., Dudziak S., Wolak I., Sobczak Z., Klimczuk T., Nowaczyk G., Hupka J.: Design and Application of Magnetic Photocatalysts for Water Treatment. The Effect of Particle Charge on Surface// Catalysts. -Vol. 7, nr. 12 (2017), s.1-18
DOI:
Digital Object Identifier (open in new tab) 10.3390/cat7120360
Verification:
Gdańsk University of Technology

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