Effect of metal ions adsorption on the efficiency of methylene blue degradation onto MgFe 2 O 4 as Fenton-like catalysts

Andrei Ivanets, Marina Roshchina, Varsha Srivastava, Vladimir Prozorovich, Tetiana Dontsova, Svitlana Nahirniak, Vladimir Pankov, Ahmad Hosseini-Bandegharaei, Hai Nguyen Tran, Mika Sillanpää

Research output: Contribution to journalArticlepeer-review

106 Citations (Scopus)

Abstract

Magnesium ferrite (MgFe 2 O 4 ) and metal-loaded (Mn 2+ , Co 2+ , Ni 2+ , and Cu 2+ ) MgFe 2 O 4 nanoparticles were used as Fenton-like catalysts for methylene blue (MB) degradation in aqueous solutions under visible light. Primarily investigated here were the effects of metal ions adsorbed onto MgFe 2 O 4 and the conditions of catalytic MB degradation. The results of catalytic tests indicated that in the optimal conditions (catalyst dose of 0.5 g/L, pH 6.0, and H 2 O 2 concentration of 20 mmol/L), the mineralization rate of MB reached approximately 98% in 30 min under visible light. There were no significant changes of crystal structure, morphology, particle size, and textural properties of studied catalysts after the adsorption and MB degradation tests. The kinetic studies indicated that the pseudo-first order model fitted well to the experimental data. The catalytic activity of metal-loaded samples rose with increasing Fe 3+ and M 2+ mobility and this activity ranged from approximately 91 to 97% after 4 consecutive cycles. The main role of [rad] OH radicals and holes h ВC + in the MB degradation was established. Magnesium ferrite can serve as an effective material for catalytic and adsorption treatment of multi-component aqueous solutions containing organic pollutants and toxic metal ions. High efficiency of MgFe 2 O 4 Fenton-like catalyst for MB mineralization under visible light was indicated. A catalytic mechanism in metal-loaded MgFe 2 O 4 / H 2 O 2 systems was proposed.

Original languageEnglish
Pages (from-to)17-26
Number of pages10
JournalColloids and Surfaces A: Physicochemical and Engineering Aspects
Volume571
DOIs
Publication statusPublished - 20 Jun 2019
Externally publishedYes

Keywords

  • Adsorption
  • Advanced oxidation process
  • Fenton-like catalysts
  • Magnesium ferrite
  • Methylene blue degradation

ASJC Scopus subject areas

  • Surfaces and Interfaces
  • Physical and Theoretical Chemistry
  • Colloid and Surface Chemistry

Fingerprint

Dive into the research topics of 'Effect of metal ions adsorption on the efficiency of methylene blue degradation onto MgFe 2 O 4 as Fenton-like catalysts'. Together they form a unique fingerprint.

Cite this