STRUCTURE AND CHARACTERISTICS OF Er3+ DOPED ZrO2/CuO  FOR PHOTOCATALYTIC DEGRADATION OF METHYLENE BLUE UNDER VISIBLE LIGHT

Phạm Văn Huấn

doi:10.34238/tnu-jst.10519

STRUCTURE AND CHARACTERISTICS OF Er3+ DOPED ZrO2/CuO FOR PHOTOCATALYTIC DEGRADATION OF METHYLENE BLUE UNDER VISIBLE LIGHT

About this article

Received: 03/06/24 Revised: 10/07/24 Published: 11/07/24

Authors

Pham Van Huan , Electric Power University

Abstract

Wastewater pollution containing organic pigments that are difficult to decompose is a global problem, and the photocatalytic method is currently a superior method. However, current photocatalytic materials are mainly active when illuminated by UV radiation. In this study, Er³⁺-doped ZrO₂/CuO nanocomposite materials were synthesized by co-precipitation method, with photocatalytic activity under visible light. Characteristics of ZrO₂/CuO:Er³⁺ were investigated by scanning electron microscope (SEM), Energy-dispersive X-ray spectroscopy (EDS), transmission electron microscope (TEM), X-ray diffraction (XRD), diffuse reflectance spectrum (DRS). The obtained ZrO₂/CuO:Er³⁺ nanocomposite particles have an average diameter of about 12 - 14 nm. XRD shows that ZrO₂ forms tetragonal phase, CuO forms monoclinic phase. The photocatalytic properties of the material under simulated sunlight degradation 95% of methylene blue (20 mg.L⁻¹) in 210 minutes with a degradation constant of k_app = 6.87×10⁻³ min⁻¹. Research shows that Er³⁺-doped ZrO₂/CuO nano composite materials have potential applications in the field of textile wastewater treatment and wastewater pollution treatment with sunlight.

Keywords

Nano ZrO2/CuO:Er3+; Photocatalysis; Co-precipitation; Methylene blue; Nanocomposite

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DOI: https://doi.org/10.34238/tnu-jst.10519

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