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(Reference retrieved automatically from SciELO through information on FAPESP grant and its corresponding number as mentioned in the publication by the authors.)

Visible-light photocatalytic activity and recyclability of N-doped TiO2 films grown by MOCVD

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Author(s):
E. C. de Oliveira [1] ; R. T. Bento [2] ; O. V. Correa [3] ; M. F. Pillis [4]
Total Authors: 4
Affiliation:
[1] University of São Paulo. CNEN/SP. Energy and Nuclear Research Institute - Brasil
[2] University of São Paulo. CNEN/SP. Energy and Nuclear Research Institute - Brasil
[3] University of São Paulo. CNEN/SP. Energy and Nuclear Research Institute - Brasil
[4] University of São Paulo. CNEN/SP. Energy and Nuclear Research Institute - Brasil
Total Affiliations: 4
Document type: Journal article
Source: Cerâmica; v. 66, n. 380, p. 451-459, 2020-10-30.
Abstract

Abstract Nitrogen-doped TiO2 films were grown on borosilicate glass substrates at 400 °C by the metallorganic chemical vapor deposition (MOCVD) for removing dye from water under visible light. The effect of N-doping on the structural, surface, and photocatalytic properties of films was evaluated. X-ray photoelectron spectroscopy (XPS) analyses revealed that 1.56 and 2.44 at% of nitrogen were incorporated into the films by varying the NH3 flux during the growth. Methyl orange dye degradation experiments showed that the N-doped films presented photoactivity under visible light. The film containing 2.44 at% of nitrogen exhibited the best photocatalytic behavior, with 55% of efficiency. Recyclability tests under visible light showed that the film efficiency dropped gradually after each test. N-TiO2 films grown by MOCVD have the potential to be used in environmental applications by removing pollutants using a green method under sunlight or even under internal illumination, although its reuse is limited. (AU)