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Growth and characterisation of ZnO micro/nanostructures doped with cerium for photocatalytic degradation applications

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Rodríguez Peña, Micaela and Flores Carrasco, G. and Urbieta Quiroga, Ana Irene and Rabanal, M.E. and Fernández Sánchez, Paloma (2020) Growth and characterisation of ZnO micro/nanostructures doped with cerium for photocatalytic degradation applications. Journal of alloys and compounds, 820 . ISSN 0925-8388

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Official URL: http://dx.doi.org/10.1016/j.jallcom.2019.153146


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Abstract

ZnO:Ce structures have been obtained by a vapour-solid method. Different dopant concentrations have been used, and the incorporation of cerium in the crystalline structure of zinc oxide has been verified by means of Energy Dispersive Spectroscopy and Raman investigations. The morphology of the structures varies depending on the initial content of Ce in the samples, changing from long and thin rods and wires to "bottle-like" and truncated hexagonal pyramids as the Ce content increases. Cathodoluminescent properties have also been studied, the near band edge and deep level emissions change depending on both Ce content and morphology of the structures. Photocatalysis investigations show that an increase above 5 wt % of cerium oxide in the material causes a slight decrease in the efficiency of these structures in the degradation of the contaminant.


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©2020 Elsevier
This work has been partially supported by MINECO/FEDER (MAT2015-65274-R, MAT2016-80875-C3-3-R, MAT2013-47460-C5-5-P) and from Comunidad of Madrid: S2013/MIT-2862.; The author (G. Flores-Carrasco) kindly acknowledges the financial support of CONACYT by a Postdoctoral scholarship and the facilities given by the Department of Materials Science and Engineering and Chemical Engineering of the University Carlos III of Madrid.

Uncontrolled Keywords:Optical-properties; Zinc-oxide; Oxygen vacancies; Gas sensor; Photoluminescence; Uv; Nanostructures; Nanocrystals; Luminescence; Fabrication; ZnO:Ce; Nanostructures; Optical properties; Photocatalytic activity
Subjects:Sciences > Physics > Materials
Sciences > Physics > Solid state physics
ID Code:59220
Deposited On:20 Feb 2020 13:25
Last Modified:21 Feb 2020 08:28

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