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Article

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Title

Visible light assisted photocatalytic degradation of methylene blue using iodine doped Fe3O4-GO composite

Authors

[ 1 ] Instytut Chemii i Elektrochemii Technicznej, Wydział Technologii Chemicznej, Politechnika Poznańska | [ P ] employee

Scientific discipline (Law 2.0)

[7.6] Chemical sciences

Year of publication

2023

Published in

Optik

Journal year: 2023 | Journal volume: vol. 290

Article type

scientific article

Publication language

english

Keywords
EN
  • supercapacitor
  • ECDL
  • coffee waste
  • coffee silver skins
  • quinones
  • activated carbon
  • electrodes
Abstract

EN Environmental contamination and wastewater discharge from industrial activities are global issues that must be addressed immediately. The uncontrolled discharge of dangerous organic compounds constitutes a significant environmental risk. To solve this issue, heterogeneous photocatalysis with semiconductor metal oxides has appeared as an environmentally benign method for wastewater treatment. Our research aims to create a new iodine-doped magnetic graphene oxide nanocomposite and test its ability to break down the refractory methylene blue dye by photocatalytic techniques using sunlight. The I-Fe3O4-GO composite was synthesized using a facile ultrasonication-assisted co-precipitation method. Several physiochemical techniques were employed for detailed characterization, including SEM-EDX, XRD, FTIR, UV-Vis DRS, and Raman spectroscopy. The band gap value of 2.6 eV was measured using a tauc plot. The I-Fe3O4-GO nanocomposite showed 95% methylene blue degradation under sunlight in about an hour. The improved catalytic efficiency of the synthesized photocatalyst was attained at pH 8, with an I-FeGO dose of 50 mg/100 mL and an oxidant dose of 14 mM. The photocatalyst displayed exceptional photostability after five consecutive reusability cycles. Response surface methodology was the statistical tool for evaluating several interacting parameters for optimizing dye degradation.

Date of online publication

09.08.2022

Pages (from - to)

2647-1 - 2647-15

DOI

10.1016/j.ijleo.2023.171282

URL

https://www.sciencedirect.com/science/article/abs/pii/S0030402623007799

Comments

Article number: 2647

Ministry points / journal

40

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