Abstract
Boron-modified TiO2 thin films with different boron contents were obtained by the spin coating technique. Chemical composition and bonding were determined by X-ray photoelectron spectroscopy (XPS). Raman, UV–visible and photoluminescence spectroscopies were used to characterize the deposited films. XPS results revealed that the boron content varied from 2.1 to 9.0 at% and that Ti-O-B bonds are formed at the highest content. Raman spectra showed that incorporation of B in the titania lattice improved the crystallinity of the anatase phase and promoted a decrease in the crystallite size. Photoluminescence characterization indicated a quenching of the electron–hole recombination rate due to boron incorporation. The photocatalytic activity improved with films modified with B under solar-simulated irradiation.
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Acknowledgments
We acknowledge SIEA-UAEM for financial support through the project 6537, the technical assistance of LIA Citlalit Martínez, Dr Diego Martínez-Otero, M en C. Nieves Zavala, M en C. Lizbeth Triana, M en C. Melina Tapia, M en C Alejandra Núñez.
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Solis-Casados, D.A., Rodríguez-Nava, E., Basurto, R. et al. Boron-modified TiO2 thin films for visible-light-driven photocatalysis. Bull Mater Sci 45, 117 (2022). https://doi.org/10.1007/s12034-022-02708-2
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DOI: https://doi.org/10.1007/s12034-022-02708-2