Fabrication of Green Synthesized SnO2–ZnO/Bentonite Nanocomposite for Photocatalytic Degradation of Organic Dyes

Morteza Golmohammadi, Mojtaba Nabipoor Hassankiadeh, Ali AlHammadi, Ali ElKamel

Research output: Contribution to journalArticlepeer-review

5 Scopus citations

Abstract

This paper proposes a simple and environmentally friendly method for the green synthesis of SnO2–ZnO/bentonite nanocomposite in the presence of Acroptilon repens flower extract as a reducing and stabilizing agent. The synthesized nanocomposite was characterized using various techniques to investigate their structural properties and morphology. The photocatalytic degradation of the organic dye, eriochrome black-T (EBT) under solar irradiation and in the presence of synthesized nanocomposite was investigated. The results indicated that the nanoparticles were well immobilized onto bentonite as a support with minimum agglomeration. Moreover, the results of photocatalytic reactions showed that SnO2–ZnO/bentonite nanocomposite could remove the dyes in just 2.5 h and the degradation efficiencies approached 100% indicating the excellent performance of the catalyst. The kinetic study revealed that degradation of EBT in presence of the SnO2–ZnO/bentonite nanocomposite obeys first-order kinetics with the rate constant of 1.75 × 10–2 min−1. Furthermore, the biosynthesized nanocomposite exhibited a stable performance and high tolerance to the reaction conditions and was reused in three cycles with negligible loss of activity.

Original languageBritish English
JournalJournal of Cluster Science
DOIs
StateAccepted/In press - 2022

Keywords

  • Acroptilon repens flower
  • Green synthesis
  • Nanocomposite
  • Photocatalyst
  • Product formulation
  • SnO–ZnO/bentonite

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