Photocatalytic and Glucose Sensing Properties of ZnO-Based Nanocoating

Bakranova D. Seitov B. Bakranov N.
April 2023 MDPI

ChemEngineering
2023 #7 Issue 2

Here, we report a simple and versatile synthesis of low-dimensional ZnO nanosheet (NS) arrays modified with Fe₂O₃ (hematite) to assemble photocatalytic coatings and non-enzymatic glucose sensors. Photocatalytic coatings made of widespread elements (zinc and iron) were tested for methylene blue (MB) dye decolorization under ultraviolet and visible (UV-vis) irradiation. A comparative study of unmodified and modified ZnO NS photocatalysts revealed a significant decrease in the dye concentration in 180 min when ZnO/Fe₂O₃ arrays were used. Size dependence efficiency of the hematite layer deposited onto ZnO is presented. A study of the sensitivity of biosensors made of ZnO nanostructures and ZnO/Fe₂O₃ nanocomposites for glucose detection showed an improvement in sensitivity with increased Fe₂O₃ thickness. The structure and morphology of low-dimensional coatings were studied by X-ray diffraction (XRD), scanning electron microscopy (SEM), and energy dispersive X-ray analysis (EDX). The optical properties of nanoarrays showed a red shift of absorption after modifying ZnO with hematite layers, which holds good promise for expanding photocatalytic activity in the visible region.

a non-enzymatic glucose sensor , hematite , methylene blue dye degradation , nanocomposite , photocatalyst , ZnO

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Faculty of General Education, Kazakh-British Technical University, Almaty, 050000, Kazakhstan
Department of Physics, Khoja Akhmet Yassawi International Kazakh-Turkish University, Turkestan, 161200, Kazakhstan
Research Group altAir Nanolab, Almaty, 050000, Kazakhstan

Faculty of General Education
Department of Physics
Research Group altAir Nanolab

10 лет помогаем публиковать статьи Международный издатель

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