Mechanistic insight into the adsorption and photocatalytic activity of a magnetically separable gamma-Fe2O3/Montmorillonite nanocomposite for rhodamine B removal

Fatimah, Is and Purwiandono, Gani and Hidayat, Arif and Sagadevan, Suresh and Kamari, Azlan (2022) Mechanistic insight into the adsorption and photocatalytic activity of a magnetically separable gamma-Fe2O3/Montmorillonite nanocomposite for rhodamine B removal. Chemical Physics Letters, 792. ISSN 0009-2614, DOI https://doi.org/10.1016/j.cplett.2022.139410.

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Abstract

The magnetically separable nanocomposite of gamma-Fe2O3/montmorillonite (gamma-Fe2O3/Mt) has been synthesized by a hydrothermal method. The as-obtained nanocomposite is composed of a single phase of gamma-Fe2O3 nanoparticles homogeneously dispersed in a montmorillonite structure with high photocatalytic activity for rhodamine B photodegradation. Physicochemical characterization revealed particle sizes ranging from 10 to 30 nm with a band-gap energy of 2.3 eV. This study reveals a significant contribution of the adsorption mechanism to the degradation mechanism. The nanocomposite could be easily separated and reused by magnetic separation owing to its magnetism of 22 emu/g. The nanocomposite is also reusable without any chemical change until five cycles.

Item Type: Article
Funders: Kementrian Riset-Badan Riset Nasional, Republic of Indonesia [Grant No: 018/DirDPPM/70/DPPM/WCR-KEMDIKBUDRISTEK/VII/2021]
Uncontrolled Keywords: Adsorption; Clay; Magnetic; Photocatalytic
Subjects: Q Science > QC Physics
Q Science > QD Chemistry
Divisions: Deputy Vice Chancellor (Research & Innovation) Office > Nanotechnology & Catalysis Research Centre
Depositing User: Ms. Juhaida Abd Rahim
Date Deposited: 19 Sep 2023 01:09
Last Modified: 19 Sep 2023 01:09
URI: http://eprints.um.edu.my/id/eprint/43047

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