General Information
    • ISSN: 2010-0221
    • Frequency: Bimonthly
    • DOI: 10.18178/IJCEA
    • Editor-in-Chief: Dr. Eldin W. C. Lim
    • Executive Editor: Mr. Ron C. Wu
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Editor-in-chief
Dr. Eldin W. C. Lim
Dept. of Chemical and Biomolecular Engineering,
National University of Singapore, Singapore
IJCEA 2017 Vol.8(5): 327-333 ISSN: 2010-0221
doi: 10.18178/ijcea.2017.8.5.678

Green Synthesis of Iron Nanoparticles by Aqueous Extract of Eriobotrya japonica Leaves as a Heterogeneous Fenton-like Catalyst: Degradation of Basic Red 46

Emel Simla Önal, Tolga Yatkin, Memduha Ergüt, and Ayla Özer
Abstract—In the present study, iron nanoparticles (FeNPs) were synthesized by using aqueous extract of Eriobotrya japonica leaves. The synthesized FeNPs were characterized by DLS, XRD, FTIR, and SEM/EDX techniques. The characterization studies showed that, the prepared FeNPs were irregular spherical particles and mainly consist of maghemite (ɣ-Fe2O3), magnetite (Fe3O4), and iron oxohydroxide (FeOOH) structures. Subsequently, the synthesized FeNPs were utilized as a heterogeneous catalyst for decolourisation of a toxic azo-dyestuff, Basic Red 46, with Fenton-like degradation in the presence of H2O2. BR 46 decolourisation was measured spectrophotometrically and expressed in terms of the decrease in UV-vıs absorbance. FeNPs have high colour removal efficieny for BR 46 from aqueous solution. The effects of process parameters such as initial dye concentrations (100–5000 mg/L) and catalyst (FeNPs) concentrations (0.25–5 g/L) on Fenton-like degradation were investigated in a batch system. For Fenton-like degradation of BR 46 at room temperature, the optimum initial BR 46 concentration and FeNPs concentration were determined as 500 mg/L of and 0.5 g/L, respectively. Moreover, the possible Fenton-like decolourisation mechanism of Basic Red 46 was proposed. The suggested mechanism was based on the adsorption of Basic Red 46 on the surface of FeNPs, decomposition of H2O2, and formation of hydroxyl radicals and finally, oxidation of Basic Red 46.

Index Terms—Basic Red 46, decolourisation, green synthesis, heterogeneous fenton-like catalyst, iron nanoparticles.

Emel Simla Önal, Tolga Yatkin, Memduha Ergüt and Ayla Özer are with the Faculty of Chemical Engineering, Mersin University, Çiftlikköy Campus, Yenişehir, Mersin TR33343, Turkey (e-mails: simtoga31@gmail.com, memduha.ergut@gmail.com, ayozer@mersin.edu.tr ).

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Cite: Emel Simla Önal, Tolga Yatkin, Memduha Ergüt, and Ayla Özer, "Green Synthesis of Iron Nanoparticles by Aqueous Extract of Eriobotrya japonica Leaves as a Heterogeneous Fenton-like Catalyst: Degradation of Basic Red 46," International Journal of Chemical Engineering and Applications vol. 8, no. 5, pp. 327-333, 2017.

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