The Effects of Manganese Dopant Content and Calcination Temperature on Properties of Titania-Zirconia Composite

Muhamad Imam Muslim; Rian Kurniawan; Mokhammad Fajar Pradipta; Wega Trisunaryanti; Akhmad Syoufian

doi:10.22146/ijc.61900

The Effects of Manganese Dopant Content and Calcination Temperature on Properties of Titania-Zirconia Composite

https://doi.org/10.22146/ijc.61900

Muhamad Imam Muslim⁽¹⁾, Rian Kurniawan⁽²⁾, Mokhammad Fajar Pradipta⁽³⁾, Wega Trisunaryanti⁽⁴⁾, Akhmad Syoufian^(5*)

(1) Department of Chemistry, Faculty of Mathematics and Natural Sciences, Universitas Gadjah Mada, Sekip Utara, 55281 Yogyakarta, Indonesia
(2) Institute of Chemical Technology, Universität Leipzig, Linnéstr. 3, 04103 Leipzig, Germany
(3) Department of Chemistry, Faculty of Mathematics and Natural Sciences, Universitas Gadjah Mada, Sekip Utara, 55281 Yogyakarta, Indonesia
(4) Department of Chemistry, Faculty of Mathematics and Natural Sciences, Universitas Gadjah Mada, Sekip Utara, 55281 Yogyakarta, Indonesia
(5) Department of Chemistry, Faculty of Mathematics and Natural Sciences, Universitas Gadjah Mada, Sekip Utara, 55281 Yogyakarta, Indonesia
(*) Corresponding Author

Abstract

The effects of dopant content and calcination temperature on Mn-doped TiO₂-ZrO₂ structure and properties were successfully investigated. Composite of Mn-doped titania-zirconia was synthesized by sol-gel method. Titanium(IV) isopropoxide was used as the precursor of TiO₂, while zirconiapowder was used as another semiconductor. MnCl₂∙4H₂O was used as the source of dopant in this study. Various amounts of manganese were incorporated into TiO₂-ZrO₂ and calcination was performed at temperatures of 500, 700 and 900 °C. Synthesized composites were characterized by Fourier-transform infrared spectroscopy (FTIR), specular reflectance UV-Vis spectroscopy (SR UV-Vis), X-ray diffraction method (XRD) and scanning electron microscopy equipped with X-ray energy dispersive spectroscopy (SEM-EDX). The results showed that Mn-doped TiO₂-ZrO₂ with the lowest bandgap (2.78 eV) was achieved with 5% of Mn dopant and calcined at 900 °C, while Mn-doped TiO₂-ZrO₂ with the highest bandgap (3.12 eV) was achieved with 1% of Mn dopant content calcined at 500 °C.

Keywords

Mn-doped ZrTiO4; bandgap; manganese; ZrO2; TiO2

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DOI: https://doi.org/10.22146/ijc.61900