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Improved Photocatalytic Performance for Rhodamine B Degradation by Porous Zn2SnO4 Prepared with Carbon Black as a Pore-Forming Agent

Authors
  • Silvestri, Siara1
  • dos Santos Trentin, Roberta2
  • da Silveira Salla, Julia2
  • Foletto, Edson Luiz2
  • 1 Federal University of Santa Maria, Environmental Engineering Department, Santa Maria, 97105-900, Brazil , Santa Maria (Brazil)
  • 2 Federal University of Santa Maria, Chemical Engineering Department, Santa Maria, 97105-900, Brazil , Santa Maria (Brazil)
Type
Published Article
Journal
Water Air & Soil Pollution
Publisher
Springer-Verlag
Publication Date
Jul 29, 2019
Volume
230
Issue
8
Identifiers
DOI: 10.1007/s11270-019-4239-1
Source
Springer Nature
Keywords
License
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Abstract

Hydrothermal synthesis followed by a calcination step was used to prepare porous Zn2SnO4 powders using carbon black as a pore-forming agent. The porous Zn2SnO4 was used as a photocatalyst to degrade the Rhodamine B dye from aqueous solution under UV artificial light. X-ray diffraction, N2adsorption-desorption isotherms, and UV-Vis diffuse reflectance were used to characterize the material. The addition of pore-forming agent (carbon black) did not change the crystalline structure of Zn2SnO4 phase. In addition, increasing the surface area and porosity as well as decreasing the band-gap energy was observed. The combination of these characteristics favored the photodegradation of Rhodamine B, reaching 96% of dye degradation at 15 min of reaction time. In addition, the photocatalyst was active after six cycles of reuse. Therefore, the produced material in this work showed to be a potential photocatalyst to remove Rhodamine B dye from aqueous solution.

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