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Review
. 2024 Jan 31;14(3):293.
doi: 10.3390/nano14030293.

Titanium Dioxide Nanoparticles Doped with Iron for Water Treatment via Photocatalysis: A Review

Domenico Rosa  1 , Nigar Abbasova  2 , Luca Di Palma  1
Affiliations
Review

Titanium Dioxide Nanoparticles Doped with Iron for Water Treatment via Photocatalysis: A Review

Domenico Rosa et al. Nanomaterials (Basel). .

Abstract

Iron-doped titanium dioxide nanoparticles are widely employed for photocatalytic applications under visible light due to their promising performance. Nevertheless, the manufacturing process, the role of Fe3+ ions within the crystal lattice of titanium dioxide, and their impact on operational parameters are still a subject of controversy. Based on these assumptions, the primary objective of this review is to delineate the role of iron, ascertain the optimal quantity, and elucidate its influence on the main photocatalysis parameters, including nanoparticle size, band gap, surface area, anatase-rutile transition, and point of zero charge. Moreover, an optimized synthesis method based on comprehensive data and insights from the existing literature is proposed, focusing exclusively on iron-doped titanium oxide while excluding other dopant variants.

Keywords: doping; iron; nanoparticles; photocatalysis; titanium dioxide.

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Conflict of interest statement

The authors declare no conflicts of interest.

Figures

Figure 1
Figure 1
Schematic representation of the photochemical activation of titanium dioxide and the formation of radical species responsible for the oxidative degradation of organic pollutants.
Figure 2
Figure 2
Number of publications on doped titanium dioxide with different transition metals for photocatalytic applications.
Figure 3
Figure 3
Size of TiO2 nanoparticles as the amount of iron used for different syntheses [38,48,51,52,53,54,55,56,57,58,59].
Figure 4
Figure 4
SEM micrography of based-TiO2 samples doped with different amounts of iron: (a) 5%, (b) 15%, (c) 25%, (d) 35% [56].
Figure 5
Figure 5
Band gap of titanium oxide doped with iron at varying Fe/Ti ratio [6,31,38,48,51,56,61,68,69,70,71,72,73,74,75,76,77,78].
Figure 6
Figure 6
BET surface area of iron-doped TiO2 nanoparticles at varying Fe/Ti ratio [22,31,51,52,53,54,56,57,58,59,62,71,74,84,86,87,88,89,90,91,92].
Figure 7
Figure 7
Surface area of Fe-doped titania samples prepared by impregnation (IM) and co-precipitation (CP) methods at different calcination temperatures [29].
Figure 8
Figure 8
% of rutile phase in TiO2 as a function of iron content and calcination temperature [37,41,43,101,102,103,104].
Figure 9
Figure 9
A possible optimized synthesis strategy to produce iron-doped titania nanoparticles for photocatalytic purposes.
See this image and copyright information in PMC

References

    1. Mazzeo L., Rosa D., Bavasso I., Di Palma L. Entrapped zinc oxide and titania nanoparticles in calcium alginate beads for the removal of Methylene Blue (MB): Adsorption properties and photocatalytic stability. Chem. Eng. Trans. 2021;84:181–186.
    1. Ajmal S., Kumar A., Tabish M., Selvaraj M., Alam M.M., Mushtaq M.A., Zhao J., Owusu K.A., Saad A., Nazir M.T., et al. Modulating the microenvironment of single atom catalysts with tailored activity to benchmark the CO2 reduction. Mater. Today. 2023;67:203–228. doi: 10.1016/j.mattod.2023.05.022. - DOI
    1. Yasin G., Ali S., Ibraheem S., Kumar A., Tabish M., Mushtaq M.A., Ajmal S., Arif M., Khan M.A., Saad A., et al. Simultaneously Engineering the Synergistic-Effects and Coordination-Environment of Dual-Single-Atomic Iron/Cobalt-sites as a Bifunctional Oxygen Electrocatalyst for Rechargeable Zinc-Air Batteries. ACS Catal. 2023;13:2313–2325. doi: 10.1021/acscatal.2c05654. - DOI
    1. Akerdi A.G., Bahrami S.H. Application of heterogeneous nano-semiconductors for photocatalytic advanced oxidation of organic compounds: A review. J. Environ. Chem. Eng. 2019;7:103283. doi: 10.1016/j.jece.2019.103283. - DOI
    1. Zhao W., Chen I.W., Huang F. Toward large-scale water treatment using nanomaterials. Nano Today. 2019;27:11–27. doi: 10.1016/j.nantod.2019.05.003. - DOI

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