Photocatalytic Degradation of Rhodamine B and Methylene Orange Using TiO2-ZrO2 as Nanocomposite

Our study shows that the ZrO2-doped TiO2 composites exhibited a higher photocatalytic activity than just utilizing the synthetized TiO2 and a commercial P25

Víctor Ruíz-Santoyo; Virginia F. Marañon-Ruiz; Rafael Romero-Toledo; Oscar Arturo González Vargas; Alejandro Pérez-Larios

2021

Scholarcy highlights

  • There is a special interest in the elimination of synthetic dyes from fabric effluents that, in most of cases, have azo compounds
  • According to the aforementioned result, the insertion of Zr4+ ions into the TiO2 structure and the lack of formation of ZrO2 crystals according to X-ray analysis in the TZ-1 sample improved the photocatalytic degradation of the dyes, probably due to an unsaturated TiO2 anatase structure, which produced a higher inhibition of the recombination process
  • The materials synthesized in this study presented the anatase phase of TiO2, the crystalline arrangement with more photoactivity of TiO2
  • This anatase phase of TiO2 was slightly modified by the insertion of Zr4+ ions in its structure according to XRD and XPS analysis
  • Through scanning electron microscopy analysis, it was observed that the samples presented a high agglomeration grade and a semiglobular morphology, which was modified with the Zr increments in the TZ samples
  • transmission electron microscopy studies showed a nanoparticle size under 14 nm, which is favorable because it suggests that the anatase phase nanoparticles are highly stable
  • A third run cycle of the TZ-1 sample achieved a photocatalytic degradation of 78.1 and 75.5% for RhB and MO, respectively

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