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ISSN (Print): 2210-2981
ISSN (Online): 2210-2914

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Research Article Section: Nanotechnology

Clay-derived Synthesis of Supported α-Fe2O3 Nanoparticles: Shape, Adsorption, and Photo-catalysis

Author(s): Linrong Meng, Tao Hao, Xintai Su*, Xue Li* and Guofeng Wang

Volume 3, Issue 1, 2023

Published on: 26 September, 2022

Page: [72 - 81] Pages: 10

DOI: 10.2174/2210298102666220823152953

Price: $65

Abstract

Background: This paper reports a versatile bentonite clay-mediated growth method for selectively synthesizing zero-dimensional α-Fe2O3 nanoparticles and one-dimensional α-Fe2O3 nanorods.

Methods: In such a growth process without any other surfactant or additive, the bentonite clay is not only used as the supporter, but also as a shape mediator for α-Fe2O3 nanocrystals. The products were characterized by X-ray diffraction (XRD) and transmission electron microscopy (TEM).

Results: The as-prepared products were used to investigate their promising adsorptive and photocatalytic applications in water treatment. According to the Langmuir equation, the maximum adsorption capacity of the α-Fe2O3/bentonite composite for Congo red (CR) is calculated to be 96.9 mg·g-1. Furthermore, the α-Fe2O3/bentonite nanocomposites also show an excellent photocatalytic property in the degradation of methyl orange (MO).

Conclusion: This facile and novel synthesis method has the potential to be applied to prepare the low-cost α-Fe2O3/bentonite nanocomposite for the removal of CR and MO.

Keywords: α-Fe2O3/bentonite composite, water treatment, adsorption, photocatalysis, nanopartices, clay-derived synthesis.

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