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Authors = Aleksandr P. Amosov ORCID = 0000-0003-1994-5672

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19 pages, 16805 KiB  
Article
The Solution Combustion Synthesis of ZnO Powder for the Photodegradation of Phenol
by Aleksandr P. Amosov, Vladislav A. Novikov, Egor M. Kachkin, Nikita A. Kryukov, Alexander A. Titov, Ilya M. Sosnin and Dmitry L. Merson
Ceramics 2022, 5(4), 928-946; https://doi.org/10.3390/ceramics5040067 - 3 Nov 2022
Cited by 10 | Viewed by 3278
Abstract
Nanoscale and submicron powder of zinc oxide (ZnO) is known as a highly efficient photocatalyst that is promising for solving the problem of wastewater treatment from toxic organic pollutants including phenol and its derivatives. The results of laboratory studies of ZnO preparation by [...] Read more.
Nanoscale and submicron powder of zinc oxide (ZnO) is known as a highly efficient photocatalyst that is promising for solving the problem of wastewater treatment from toxic organic pollutants including phenol and its derivatives. The results of laboratory studies of ZnO preparation by a simple, energy-saving, and highly productive method of solution–combustion synthesis from a mixture of solutions of zinc nitrate and glycine, as well as the use of the ZnO powder synthesized by combustion for the photocatalytic decomposition of phenol, are presented. The modes and characteristics of combustion, phase composition, chemical composition, and structure of the combustion product at different ratios of glycine with zinc nitrate were determined. It is shown that calcination at 650 °C reduces the content of carbon impurity in the combustion product to ~1 wt.% and leads to obtaining ZnO powder in the form of porous agglomerates up to 100 μm in size sintered from crystalline nanoscale and submicron ZnO particles with an average crystallite size of 44 nm. The ZnO powder exhibits high photocatalytic activity, leading to the almost complete degradation of phenol in an aqueous solution under the action of ultraviolet irradiation in less than 4 h. Full article
(This article belongs to the Special Issue Advances in Ceramics)
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