@inproceedings{f8785ae6d8444be4af9ede081baeabdf,
title = "Wastewater treatment by sonocatalysis and sonophotocatalysis using Fe3O4/SnO2 composite supported on nanographene platelets",
abstract = "In this study, we attempt to enhance the sonocatalytic performance of the Fe3O4/SnO2 composites by depositing the Fe3O4/SnO2 composites onto nanographene platelets (NGPs) in order to develop sonocatalysts and sonophotocatalysts. We combine the sonocatalytic process with UV light irradiation. Fe3O4/SnO2 and Fe3O4/SnO2/NGP composites were synthesized using co-precipitation and ultrasonic assisted methods, respectively. The structural properties and thermal stability of the samples were characterized using X-ray diffraction (XRD) and thermogravimetric analysis (TGA), respectively. The results show that the Fe3O4/SnO2/NGP 10wt.% composite exhibits high efficiency for the sonocatalytic and sonophotocatalytic removal of methylene blue (MB), among the composites with various weight percentages (wt.%) of NGP. A comparison of the degradation efficiencies in the sonocatalytic and sonophotocatalytic processes using MB as a model organic pollutant revealed that sonophotocatalysis exhibits better degradation compared to sonocatalysis. The optimum degradation conditions were as follows: catalyst (Fe3O4/SnO2/NGP 10wt.%) is 0.3 g L-1, methylene blue (MB) solution concentration is 20 mg L-1, and scavenger type is hole. To ensure the stability of the used catalyst, reusability tests were also carried out. The catalyst reusability tests revealed that the Fe3O4/SnO2/NGP 10wt.% composite could be repeatedly used up to four times without any significant change in the sonocatalytic and sonophotocatalytic activity.",
keywords = "FeO, NGP, SnO, ultrasound",
author = "V. Paramarta and R. Saleh",
note = "Publisher Copyright: {\textcopyright} 2018 Author(s).; 3rd International Symposium on Current Progress in Mathematics and Sciences 2017, ISCPMS 2017 ; Conference date: 26-07-2017 Through 27-07-2017",
year = "2018",
month = oct,
day = "22",
doi = "10.1063/1.5064010",
language = "English",
series = "AIP Conference Proceedings",
publisher = "American Institute of Physics Inc.",
editor = "Ratna Yuniati and Terry Mart and Anggraningrum, {Ivandini T.} and Djoko Triyono and Sugeng, {Kiki A.}",
booktitle = "Proceedings of the 3rd International Symposium on Current Progress in Mathematics and Sciences 2017, ISCPMS 2017",
}