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2020 | OriginalPaper | Chapter

Photocatalytic and Photoluminescent Properties of TiO2 Nanocrystals Obtained by the Microwave Solvothermal Method

Authors : Kleber Figueiredo de Moura, Laís Chantelle, Márcia Rejane Santos da Silva, Elson Longo, Máximo Siu–Li, Maria Gardênia Fonseca, Ary da Silva Maia, Iêda Maria Garcia dos Santos

Published in: Emerging Research in Science and Engineering Based on Advanced Experimental and Computational Strategies

Publisher: Springer International Publishing

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Abstract

In the present work, the influence of the short-range disorder on the photocatalytic activity of TiO2 nanocrystals obtained by a rapid microwave solvothermal method was evaluated. The synthesis of TiO2 was performed without synthesis additives and with two different capping agents, sodium dodecyl sulfate (SDS) or carboxymethyl cellulose (CMC). Higher short-range disorder was obtained when SDS was used, as indicated by photoluminescence (PL) and also in the Raman spectra. In the second step, TiO2 samples were used as photocatalysts for the degradation of remazol golden-yellow dye (RNL). High efficiency was observed, with meaningful variations in the percentage efficiency depending on the short-range order of the photocatalyst. Our best results were comparable to those of commercial TiO2 Degussa P25. Adsorption isotherms were also evaluated as a function of time, indicating that chemisorption appears to take place, with a high adsorption capacity of the RNL by the photocatalysts.

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Metadata
Title
Photocatalytic and Photoluminescent Properties of TiO2 Nanocrystals Obtained by the Microwave Solvothermal Method
Authors
Kleber Figueiredo de Moura
Laís Chantelle
Márcia Rejane Santos da Silva
Elson Longo
Máximo Siu–Li
Maria Gardênia Fonseca
Ary da Silva Maia
Iêda Maria Garcia dos Santos
Copyright Year
2020
DOI
https://doi.org/10.1007/978-3-030-31403-3_2

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