Photocatalytic performance of Ag/Fe3O4/SnO2 supported on two different types of graphene

V. Paramarta, Rosari Saleh

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

1 Citation (Scopus)

Abstract

In this work, Ag/Fe3O4/SnO2 composites with two types of graphene (Ag/Fe3O4/SnO2/NGP and Ag/Fe3O4/SnO2/graphene) were synthesized using co-precipitation and applied in degradation of methylene blue (MB) as a target pollutant in a solution. The prepared sample was characterized using X-ray diffraction (XRD), thermogravimetric analysis (TGA) and UV-Vis spectroscopy. TGA characterization indicated that two types of graphene were successfully loaded into the Ag/Fe3O4/SnO2 composites. The experiments were performed at a pH of 13 and an initial of MB concentration of 20 mg/L. Among the two types of graphene, the Ag/Fe3O4/SnO2/graphene shows the highest photocatalytic activity for degradation of MB under UV light irradiation, and the photocatalytic performance decreases in the order Ag/Fe3O4/SnO2/NGP > Ag/Fe3O4/SnO2 > Fe3O4/SnO2. The optimum conditions for irradiation time and catalyst dosages were 120 min and 0.3 g/L, respectively. The addition of diammonium oxalate, which acts as a hole scavenger, leads to a simultaneous decrease in the dye degradation. This suggests that hole is the dominant active species responsible for the dye degradation. The reusability tests have also been carried out to ensure the stability of the used catalysts.

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
  • grapheme

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