Influence of sodium doping on the material properties and photocatalytic activity of anatase titanium dioxide nanotubes prepared by anodization

Rahman, Hiba; Norbert, Aleena; Nair, Priya S.; Joseph, Julie Ann; Shaji, Sadasivan; Deshpande, Uday; Naduvath, Johns; S, Shanu A.; Philip, Rachel Reena

doi:10.1016/j.optmat.2022.113172

Cited by 13 publications

(1 citation statement)

References 49 publications

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“…Rahman et al realized the band gap regulation of TiO 2 by adjusting the concentration of Na + , and the photodegradation efficiency of MB dye (97.3% within 180 min) was higher than that of undoped material (56.8% within 180 min) [29]. Inspired by the work in Cu(In,Ga)Se 2 (CIGS)-based thin film solar cells, where the power conversion efficiency of CIGS solar cells can be greatly enhanced by diffusion of Na + in sodalime glass to CIGS layer, we doped Na + into CsPbBr 3 /Cs4PbBr 6 nanocomposites to further enhance the degradation efficiency [30]. The Na + doping enhanced the crystal structure of perovskite NCs, reduced defects and reduced photogenerated carrier combination.…”

Section: Introductionmentioning

confidence: 99%

Stability and photocatalytic performance enhancement of sodium-doped CsPbBr₃/Cs₄PbBr₆ nanocomposites for dye wastewater degradation

Gu,

Pan,

Fang

et al. 2024

Phys. Scr.

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The extremely poor stability of lead halide perovskites has always been a challenge. In this paper, CsPbBr3 nanocrystals, CsPbBr3/Cs4PbBr6 nanocomposites and Na-CsPbBr3/Cs4PbBr6 nanocomposites were prepared by thermal injection and ligand-assisted reprecipitation method. The photocatalytic effect and stability of CsPbBr3 in aqueous systems were significantly improved by sodium ions doping and complexation with Cs4PbBr6. The results showed that the photocatalytic degradation rate of 5% Na-CsPbBr3 for Sudan red (III) was 57.8% within 180 min, while that of pure CsPbBr3 was only 14.47%. In the CsPbBr3/Cs4PbBr6 nanocomposites, Na-CsPbBr3/Cs4PbBr6 nanocomposites photocatalyzed nearly 94% of Sudan red (III) in 120 min, while CsPbBr3/Cs4PbBr6 photocatalyzed only 56% of organic dyes in the same time. Cs4PbBr6 can passivate CsPbBr3 in situ to enhance the stability of the perovskite material. In the four cyclic degradation experimental tests in aqueous systems, the nanocomposites maintained good stability performance. This study provides a new way to improve the catalytic performance and stability of perovskite materials.

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Section: Introductionmentioning

confidence: 99%

Stability and photocatalytic performance enhancement of sodium-doped CsPbBr₃/Cs₄PbBr₆ nanocomposites for dye wastewater degradation

Gu,

Pan,

Fang

et al. 2024

Phys. Scr.

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Enhanced Adsorption and Photocatalytic Activity of Vertically Oriented TiO₂ Nanotube Arrays by Li Incorporation

Nair,

Rahman Edamana,

Mary Alappatt

et al. 2024

Physica Status Solidi (a)

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A highly efficient, solid, and easily maneuverable adsorbent and photocatalyst, Li‐incorporated titanate nanotubes that manifest adsorption efficiency of 98.1% and photocatalytic efficiency of 99.6% in 60 min and 97.8% and 98.5%, respectively, in a shorter duration of 20 min, is synthesized by a facile two‐stage electrochemical technique. The modified nanotubes exhibit good cyclic stability of 93.7% photodegradation of malachite green dye after three continuous cycles. The adsorption data show the highest correlation for second‐order pseudo kinetics and Freundlich isotherm, suggesting multilayer chemisorption with an adsorption capacity of kF ≈ 219.51 mg1–1/nL1/ng−1. Fourier transform infrared spectroscopy (FTIR) analysis of the adsorbent before and after the adsorption corroborates the findings. X‐Ray photoelectron spectroscopy reveals the formation of a larger number of oxygen vacancies (Ti3+/Ti2+) that facilitate more carrier release for the production of reactive oxygen species during photocatalysis. X‐Ray diffraction and transmission electron microscopy analysis confirm a secondary rutile phase formation on Li doping that promotes heterogeneous multilayer adsorption. Field‐emission spectroscopic studies reveal a change in the morphology of the doped tubes with porous aggregate formation on the surface. The structural, morphological, and compositional change brought about by Li incorporation facilitates the use of titania nanotubes as an efficient adsorbent cum photocatalyst in the removal of malachite green dye.

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Depollution of industrial dyes by nanocrystalline Ti0.95Bi0.025X0.025O2 (X = Zr, Nb): visible light harvesting, charge separation and high efficiency

Ibrahim

El-Zaidy

2023

J Sol-Gel Sci Technol

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Influence of sodium doping on the material properties and photocatalytic activity of anatase titanium dioxide nanotubes prepared by anodization

Cited by 13 publications

References 49 publications

Stability and photocatalytic performance enhancement of sodium-doped CsPbBr₃/Cs₄PbBr₆ nanocomposites for dye wastewater degradation

Stability and photocatalytic performance enhancement of sodium-doped CsPbBr₃/Cs₄PbBr₆ nanocomposites for dye wastewater degradation

Enhanced Adsorption and Photocatalytic Activity of Vertically Oriented TiO₂ Nanotube Arrays by Li Incorporation

Depollution of industrial dyes by nanocrystalline Ti0.95Bi0.025X0.025O2 (X = Zr, Nb): visible light harvesting, charge separation and high efficiency

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Influence of sodium doping on the material properties and photocatalytic activity of anatase titanium dioxide nanotubes prepared by anodization

Cited by 13 publications

References 49 publications

Stability and photocatalytic performance enhancement of sodium-doped CsPbBr3/Cs4PbBr6 nanocomposites for dye wastewater degradation

Stability and photocatalytic performance enhancement of sodium-doped CsPbBr3/Cs4PbBr6 nanocomposites for dye wastewater degradation

Enhanced Adsorption and Photocatalytic Activity of Vertically Oriented TiO2 Nanotube Arrays by Li Incorporation

Depollution of industrial dyes by nanocrystalline Ti0.95Bi0.025X0.025O2 (X = Zr, Nb): visible light harvesting, charge separation and high efficiency

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Product

Resources

About

Stability and photocatalytic performance enhancement of sodium-doped CsPbBr₃/Cs₄PbBr₆ nanocomposites for dye wastewater degradation

Stability and photocatalytic performance enhancement of sodium-doped CsPbBr₃/Cs₄PbBr₆ nanocomposites for dye wastewater degradation

Enhanced Adsorption and Photocatalytic Activity of Vertically Oriented TiO₂ Nanotube Arrays by Li Incorporation