Facile Low-Cost Synthesis of Highly Photocatalitycally Active Zinc Oxide Powders
Kedruk Y.Y. Baigarinova G.A. Gritsenko L.V. Cicero G. Abdullin K.A.
31 March 2022Frontiers Media S.A.
Frontiers in Materials
2022#9
The industrial waste can cause significant harm to human health and to the environment. Organic dyes in particular are environmentally dangerous since they may cause the death of aquatic life or contaminate the feed chain. Thus, one of the current research fields consists of the development of an inexpensive and environmentally friendly method to purify wastewater from organic contaminants. Among the others, Zinc oxide (ZnO) is considered one of the most effective photocatalysts for the decomposition of organic pollutants in water. In this work, we developed a highly efficient low-temperature and environmentally safe synthesis method to obtain photocatalytically active nanostructured ZnO by chemical precipitation from a solution. The effect of the technological conditions of synthesis on the photocatalytic properties is considered in detail, the correlation with the morphology, structural, and optical properties of the synthesized ZnO samples is determined. It was found that the maximum photocatalytic activity with respect to the decomposition of the dye rhodamine-B (RhB) is achieved for samples synthesized at NaOH molar concentration from 0.4 to 0.7 M; in this case, the sizes of crystallites along the crystallographic direction 002 reach maximum values of ∼42 nm. On the contrary, the sizes of crystallites along the directions 100 and 101 decrease monotonically from 30 to 25 nm with an increase in the molar concentration of NaOH from 0.14 to 1 M. Copyright
chemical low-cost deposition method , optical and structural properties , photocatalytic activity , rhodamine-B , zinc oxide
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Department of General Physics, Satbayev University, Almaty, Kazakhstan
National Nanotechnology Laboratory of Open, Type at Al-Farabi, Kazakh National University, Almaty, Kazakhstan
Dipartimento di Scienza Applicata e Tecnologia, Politecnico di Torino, Torino, Italy
Department of Solid State Physics and Nonlinear Physics, Almaty, Kazakhstan
Department of General Physics
National Nanotechnology Laboratory of Open
Dipartimento di Scienza Applicata e Tecnologia
Department of Solid State Physics and Nonlinear Physics
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