Please use this identifier to cite or link to this item: https://hdl.handle.net/20.500.13091/457
Title: Performance of SiO2/Ag Core/Shell particles in sonocatalalytic degradation of Rhodamine B
Authors: Deveci, İlyas
Mercimek, Bedrettin
Keywords: Sonocatalytic Degradation
Sio2/Ag Core/Shell Nanoparticles
Rhodamine B
Ultrasonic Irradiation
Acid Red-B
Sonocatalytic Degradation
Ultrasonic Degradation
Sonochemical Synthesis
Tio2 Powders
Rutile Tio2
Dye
Nanoparticles
Nanostructures
Nanocomposite
Issue Date: 2019
Publisher: ELSEVIER SCIENCE BV
Abstract: In this study, SiO2/Ag Core/Shell nanoparticles was prepared and sonocatalytic activity of prepared catalyst was investigated by using Rhodamine B as model contaminant, at 35 kHz using ultrasonic power of 160 W within 90 min. The change in efficiency in the sonocatalytic degradation of Rhodamine B catalyzed by SiO2/Ag Core/Shell nanoparticles with respect to the initial concentration of dye, catalyst amount and temperature were firstly investigated. Optimal conditions were found as follows: catalyst amount = 15 mg/L, Temperature = 25 degrees C and initial concentration of dye = 10 ppm. Influence factors such as pH of solution, O-2 saturation of solution and the concentration of H2O2 added to the solution, on degradation efficiency in presence of catalyst, were investigated. SiO2/Ag Core/Shell nanoparticles showed higher sonocatalytic activity at pH = 7 with respect to acidic and alkaline conditions. Degradation efficiency was reached up to 67% in experiments which air pumped (0.6 L/min) through the solution with in 90 min. It was observed that the dye removal increased via increase while H2O2 concentration lower than 10 mM. Higher concentration of H2O2 than the optimal concentration had adverse effect on degradation efficiency. Our results showed that the SiO2/Ag Core/Shell nanoparticles were active catalyst for sonocatalytic degradation of dyes. Reusability of the catalyst was investigated.
URI: https://doi.org/10.1016/j.ultsonch.2018.10.025
https://hdl.handle.net/20.500.13091/457
ISSN: 1350-4177
1873-2828
Appears in Collections:Mühendislik ve Doğa Bilimleri Fakültesi Koleksiyonu
PubMed İndeksli Yayınlar Koleksiyonu / PubMed Indexed Publications Collections
Scopus İndeksli Yayınlar Koleksiyonu / Scopus Indexed Publications Collections
WoS İndeksli Yayınlar Koleksiyonu / WoS Indexed Publications Collections

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