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High Temperature Material Processes: An International Quarterly of High-Technology Plasma Processes
SJR: 0.176 SNIP: 0.48 CiteScore™: 1.3

ISSN Druckformat: 1093-3611
ISSN Online: 1940-4360

High Temperature Material Processes: An International Quarterly of High-Technology Plasma Processes

DOI: 10.1615/HighTempMatProc.2020033434
pages 21-45

EFFECT OF IMPREGNATION BY SILVER NANOPARTICLES ON THE EFFICIENCY OF PLASMA-TREATED ZnO-BASED PHOTOCATALYSTS

Natalie A. Savastenko
Belorussian State University, International Sakharov Environmental Institute BSU, 23 Dolgobrodskaya Str., Minsk, 220070, Belarus
I. I. Filatova
B. I. Stepanov Institute of Physics, National Academy of Sciences of Belarus, 68 Nezavisimost Ave., Minsk, 220072, Belarus
Veronika A. Lyushkevich
B. I. Stepanov Institute of Physics, National Academy of Sciences of Belarus, 68 Nezavisimost Ave., Minsk, 220072, Belarus
N. I. Chubrik
B. I. Stepanov Institute of Physics, National Academy of Sciences of Belarus, 68 Nezavisimost Ave., Minsk, 220072, Belarus
V. Brüser
Leibniz-Institute for Plasma Science and Technology, 2 Felix-Hausdorff Strasse, 17489 Greifswald, Germany
A. A. Shcherbovich
Belorussian State University, International Sakharov Environmental Institute BSU, 23 Dolgobrodskaya Str., Minsk, 220070, Belarus
S. A. Maskevich
Belorussian State University, International Sakharov Environmental Institute BSU, 23 Dolgobrodskaya Str., Minsk, 220070, Belarus

ABSTRAKT

Here we report, for the first time to our knowledge, the plasma modification of ZnO-based photocatalysts impregnated with silver nanoparticles (Ag NPs). Plasma-treated semiconductors have been recently proposed as effective catalysts for photodegradation of methyl orange (MO) in aqueous solution. Whereas effects of plasma treatment on activity of catalysts doped with a metal atom have been investigated, the effects of plasma treatment on the performance of catalysts doped with metal nanoparticles (NPs) have not yet been studied. In this study, ZnO microparticles were impregnated with Ag NPs. Impregnated catalysts were prepared by a wet impregnation method followed by plasma treatment. For this purpose, dielectric barrier discharge (DBD) plasma was applied. The photocatalytic degradation of methyl orange was investigated under ultraviolet (UV) light irradiation in the presence of aqueous suspension of Ag-NPs-impregnated ZnO. The catalysts were characterized by photoluminescence (PL) spectroscopy, scanning electron microscopy (SEM) combined with energy dispersive X-ray spectroscopy (EDX), infrared spectroscopy (IR), and UV-Vis spectroscopy. The presence of silver in ZnO was established by the inductively coupled plasma atomic emission spectrometry (ICP-AES) technique. A diminished catalytic activity was observed after impregnation with Ag NPs. A subsequent treatment by DBD plasma leads to the enhancement of catalysts' performance. The photocatalytic activity, expressed in terms of rate constants of photodegradation of methyl orange, was approximately 3 times higher for synthesized samples than that for untreated ZnO.

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S.V. Goncharik, I. I. Filatova, N. I. Chubrik, Natalie A. Savastenko, Veronika A. Lyushkevich, S. A. Maskevich
EFFICIENT REMOVAL OF ANIONIC DYE POLLUTANT BY NIMGAL LAYERED DOUBLE HYDROXIDES OF VARIABLE COMPOSITION
Catalysis in Green Chemistry and Engineering, Vol.1, 2018, issue 4
Ramesh Ch. Deka, Pankaj Bharali, Dipshikha Bharali
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1st World Congress of Young Scientists on Hydrogen Energy Systems, Vol.0, 2005, issue
Flora Boccuzzi, Maela Manzoli, Anna Chiorino, Floriana Vindigni
He/H2 Pulsed-Discharge Plasma as a Tool for Synthesis of Surfactant-Free Colloidal Silver Nanoparticles in Water
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Sergey Tsarenko, Ilmo Sildos, Tea Avarmaa, Aleksei Treshchalov, Ants Lohmus, Alexander Vanetsev, Rando Saar
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High Temperature Material Processes: An International Quarterly of High-Technology Plasma Processes, Vol.19, 2015, issue 3-4
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