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Acid-etched coal fly ash/TiO2 nanocomposites with high photocatalytic degradation efficiency: a high value-added application of coal fly ash

Acid-etched coal fly ash/TiO2 nanocomposites with high photocatalytic degradation efficiency: a... Coal fly ash (CFA), as a kind of aluminosilicate-rich solid wastes that was generated by the combustion of coal, was used as support to load TiO2 nanoparticles to improve the photocatalytic degradation efficiency of textile dye with the advantage of low cost. In this article, a novel acid-etched coal fly ash/TiO2 nanocomposites photocatalyst was prepared by HCl etching followed by sol-gel method. The prepared nanocomposite was characterized by X-ray diffraction (XRD), scanning electron microscope (SEM), transmission electron microscope (TEM), Fourier Transform infrared spectroscopy (FTIR), X-ray photoelectron spectra (XPS) and UV–vis diffused reflectance spectroscopy (DRS) techniques. The photocatalytic degradation efficiency were evaluated by using methyl orange as model. Compared with the CFA (no HCl etching)/TiO2 nanocomposites, the prepared CFA/TiO2 nanocomposites had much better photodegradation efficiency. The preparation and application of CFA/TiO2 nanocomposites will promote the high value-added application of CFA greatly.Graphical abstract[graphic not available: see fulltext] http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Journal of Sol-Gel Science and Technology Springer Journals

Acid-etched coal fly ash/TiO2 nanocomposites with high photocatalytic degradation efficiency: a high value-added application of coal fly ash

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References (39)

Publisher
Springer Journals
Copyright
Copyright © The Author(s), under exclusive licence to Springer Science+Business Media, LLC, part of Springer Nature 2022
ISSN
0928-0707
eISSN
1573-4846
DOI
10.1007/s10971-022-05822-z
Publisher site
See Article on Publisher Site

Abstract

Coal fly ash (CFA), as a kind of aluminosilicate-rich solid wastes that was generated by the combustion of coal, was used as support to load TiO2 nanoparticles to improve the photocatalytic degradation efficiency of textile dye with the advantage of low cost. In this article, a novel acid-etched coal fly ash/TiO2 nanocomposites photocatalyst was prepared by HCl etching followed by sol-gel method. The prepared nanocomposite was characterized by X-ray diffraction (XRD), scanning electron microscope (SEM), transmission electron microscope (TEM), Fourier Transform infrared spectroscopy (FTIR), X-ray photoelectron spectra (XPS) and UV–vis diffused reflectance spectroscopy (DRS) techniques. The photocatalytic degradation efficiency were evaluated by using methyl orange as model. Compared with the CFA (no HCl etching)/TiO2 nanocomposites, the prepared CFA/TiO2 nanocomposites had much better photodegradation efficiency. The preparation and application of CFA/TiO2 nanocomposites will promote the high value-added application of CFA greatly.Graphical abstract[graphic not available: see fulltext]

Journal

Journal of Sol-Gel Science and TechnologySpringer Journals

Published: Jul 1, 2022

Keywords: Coal fly ash; HCl etching; TiO2; Photocatalyst; Water-remediation; Methyl-orange; High value-added application

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