Incorporation of Ag/SnO2 composites into nanographene platelets sheets for enhanced photocatalytic activity

V. Paramarta, Rosari Saleh

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

Abstract

In this study, we combined the noble metal Ag and NGP into SnO2 nanoparticles to enhance its photocatalytic performance. The effect of the incorporation of NGPs on the photocatalytic efficiency of Ag/SnO2 composites under UV-light irradiation was examined by varying the NGP content from 5 to 15 wt.%. Ag/SnO2/NGP composite photocatalysts with various weight percentages of NGP were successfully synthesized by a two-step method (ultrasonic-assisted method followed by co-precipitation method). The as-prepared composite photocatalysts were characterized by X-ray diffraction (XRD), thermogravimetric analysis (TGA), and UV-vis absorbance spectroscopy. According to the TGA results, the existence of NGP in the Ag/SnO2/NGP composite was confirmed, as revealed by the reduction of mass in the composite photocatalysts around 600°C. Other parameters such as catalyst dosage and scavenger type were also studied to determine the optimum degradation conditions. The results show that with the increase in the NGP content in the composites, the degradation efficiency in the photocatalytic activity also increased. When the NGP content was 10 wt.%, the photocatalytic degradation of MB reached a maximum value. To ensure the stability of the used catalyst, reusability tests were also carried out. Furthermore, scavenger experiments revealed that the main active species for the photocatalytic performance is the hole. Catalyst reusability tests revealed that the Ag/SnO2/NGP 10wt.% composite could repeatedly be used for up to four times without any significant change in the photocatalytic 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

  • Ag
  • Methylene Blue
  • Photocatalytic
  • SnO

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