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Published in: Journal of Nanoparticle Research 12/2022

01-12-2022 | Research paper

Integration of the straightforward and environmentally friendly sol–gel/solvothermal and photodeposition methods as a way to prepare highly photoactive Au/S-TiO2 and Cu/S-TiO2 materials

Authors: Jerson Mosquera-Pretelt, María I. Mejía, Juan M. Marín

Published in: Journal of Nanoparticle Research | Issue 12/2022

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Abstract

Au/S-TiO2 and Cu/S-TiO2 materials were prepared by integrating the sol–gel/solvothermal and photodeposition methods, which constituted a straightforward and environmentally friendly synthesis route with a low time requirement and without heat treatments at high temperatures. The sol–gel/solvothermal method was used to synthesize the base material (S-TiO2) from TiOSO4 as the only S and Ti precursor, developed in a previous study. The photodeposition method was used to incorporate Au and Cu metals from chloroauric acid and copper nitrate onto S-TiO2. The materials were prepared by varying the metal load and the photodeposition time. The photocatalysts were characterized by X-ray diffraction, Raman spectroscopy, ultraviolet–visible diffuse reflectance spectroscopy, X-ray photoelectron spectroscopy, scanning electron microscopy, energy-dispersive X-ray spectroscopy, transmission electron microscopy, and X-ray fluorescence. Formic acid was used to evaluate the photoactivity of the photodeposited materials. The results showed that the materials achieved a higher photoactivity than S-TiO2 under ultraviolet light and most of the materials, especially Cu/S-TiO2, achieved slightly higher activity under visible light. The material photodeposited with 0.5% wt of copper for 90 min had the highest photoactivity under visible light.

Graphical abstract

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Metadata
Title
Integration of the straightforward and environmentally friendly sol–gel/solvothermal and photodeposition methods as a way to prepare highly photoactive Au/S-TiO2 and Cu/S-TiO2 materials
Authors
Jerson Mosquera-Pretelt
María I. Mejía
Juan M. Marín
Publication date
01-12-2022
Publisher
Springer Netherlands
Published in
Journal of Nanoparticle Research / Issue 12/2022
Print ISSN: 1388-0764
Electronic ISSN: 1572-896X
DOI
https://doi.org/10.1007/s11051-022-05647-5

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