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Synthesis of dual type Fe species supported mesostructured silica nanoparticles: Synergistical effects in photocatalytic activity

Jusoh, Rabia'tun Hidayah and Abdul Jalil, Aishah and Triwahyono, Sugeng and Kamarudin, Nur Hidayatul Nazirah (2015) Synthesis of dual type Fe species supported mesostructured silica nanoparticles: Synergistical effects in photocatalytic activity. Rsc Advances, 5 (13). pp. 9727-9736. ISSN 2046-2069

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Official URL: http://dx.doi.org/10.1039/C4RA13837F

Abstract

Dual type Fe species (isomorphously substituted Fe species and a colloidal a-FeOOH (IS-FeOOH)) supported on mesostructured silica nanoparticles (IS-FeOOH/MSN) were prepared by a simple electrochemical method followed by impregnation. Characterization was conducted using X-ray diffraction, transmission electron microscopy, surface area analysis, Fourier-transform infrared spectroscopy, nuclear magnetic resonance, electron spin resonance, and X-ray photoelectron spectroscopy. The results suggested that silica removal occurred in the MSN framework to isomorphously substitute Fe cations while retaining the colloidal structure of IS-FeOOH. The catalytic activity of IS-FeOOH/MSN was tested on photo-Fenton-like degradation of 2-chlorophenol under fluorescent light irradiation. The performance of the catalyst was in the following order: 10 wt% IS-FeOOH/MSN > 15 wt% IS-FeOOH/MSN > 5 wt% IS-FeOOH/MSN > MSN, with removal percentages of 92.2, 79.3, 73.1, and 14.2%, respectively. The results suggest that a synergistic effect between the dual type of Fe species (Si-O-Fe and IS-FeOOH colloid) and MSN played important roles in enhancing the degradation. The results provide strong evidence to support the potential use of IS-FeOOH/MSN as a photo-Fenton-like nanocatalyst for organic pollutants treatment.

Item Type:Article
Subjects:A General Works
ID Code:58864
Deposited By: Haliza Zainal
Deposited On:04 Dec 2016 12:07
Last Modified:20 Sep 2017 10:00

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