Wastewater treatment by sonocatalysis and sonophotocatalysis using Fe3O4/SnO2 composite supported on nanographene platelets

V. Paramarta, Rosari Saleh

Research output: Chapter in Book/Report/Conference proceedingConference contribution

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.

Original languageEnglish
Title of host publicationProceedings of the 3rd International Symposium on Current Progress in Mathematics and Sciences 2017, ISCPMS 2017
EditorsRatna Yuniati, Terry Mart, Ivandini T. Anggraningrum, Djoko Triyono, Kiki A. Sugeng
PublisherAmerican Institute of Physics Inc.
ISBN (Electronic)9780735417410
DOIs
Publication statusPublished - 22 Oct 2018
Event3rd International Symposium on Current Progress in Mathematics and Sciences 2017, ISCPMS 2017 - Bali, Indonesia
Duration: 26 Jul 201727 Jul 2017

Publication series

NameAIP Conference Proceedings
Volume2023
ISSN (Print)0094-243X
ISSN (Electronic)1551-7616

Conference

Conference3rd International Symposium on Current Progress in Mathematics and Sciences 2017, ISCPMS 2017
CountryIndonesia
CityBali
Period26/07/1727/07/17

Keywords

  • FeO
  • NGP
  • SnO
  • ultrasound

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