Facile Synthesis of Magnetically Separable CoFe2O4/Ag2O/Ag2CO3 Nanoheterostructures with High Photocatalytic Performance under Visible Light and Enhanced Stability against Photodegradation

Journal of Environmental Chemical Engineering 2017
Andris Šutka, Nicola Dobelin, Urmas Joost, Krisjanis Smits, Vambola Kisand, Mihael Maiorov, Kuno Kooser, Mati Kook, Roberto Felix Duarte, Tanel Käämbre

We have developed magnetically separable and reasonably stable visible light active photocatalysts containing CoFe2O4 and mixture of Ag2O/Ag2CO3 nanoheterostructures. Obtained ternary nanoheterostructures outperform previously reported magnetically separable visible light photocatalysts, showing one of the highest visible light photocatalytic dye degradation activities in water by a magnetically separable photocatalyst. Photocatalytically active part is Ag2O/Ag2CO3 whereas the CoFe2O4 mainly has stabilizing and magnetic separation functions. The Ag2CO3 phase junction on Ag2O nanoparticle surface were obtained by straightforward phase transformation from silver oxide to silver carbonate in air due to ambient CO2. The phase transformation was followed using X-ray diffraction (XRD), and hard X-ray photoelectron spectroscopy (HAXPES) measurements.

Keywords
Silver oxideSilver carbonatePhotocatalyticNanoheterostructuresMagnetic
DOI
10.1016/j.jece.2017.07.009
Hyperlink
https://www.sciencedirect.com/science/article/pii/S2213343717303135

Šutka, A., Dobelin, N., Joost, U., Smits, K., Kisand, V., Maiorov, M., Kooser, K., Kook, M., Duarte, R., Käämbre, T. Facile Synthesis of Magnetically Separable CoFe2O4/Ag2O/Ag2CO3 Nanoheterostructures with High Photocatalytic Performance under Visible Light and Enhanced Stability against Photodegradation. Journal of Environmental Chemical Engineering, 2017, Vol.5, Iss.4, pp.3455-3462. ISSN 2213-3437. Available from: doi:10.1016/j.jece.2017.07.009

Publication language
English (en)