Characteristics and Photocatalytic Activity of Sm Doped ZnO Nanoparticles

Rodionovs, Pavels; Jankoviča, Dzidra; Grabis, Jānis

doi:10.4028/www.scientific.net/kem.799.179

Cited by 6 publications

(3 citation statements)

References 6 publications

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“…Photocatalytic activity of produced powders as well as commercial TiO2 (Degussa P-25) was investigated by photocatalytic degradation of 3.6 mg/L MB (Reidel de Haen) solution under UV/VIS light source (Osram Vitalux lamp, 300 W) for 30 minutes. Experimental conditions and processing of the results (calculations of pseudo first-order rate constant k and degradation degree of MB were performed as described in [15].…”

Section: Methodsmentioning

confidence: 99%

Synthesis of Nanocrystalline TiO<sub>2</sub> by the Extraction-Pyrolytic Method and its Phase Transformation in the Presence of Gadolinium

Burve

Serga

Krūmiņa

2021

KEM

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Due to its to its optical, thermal, photocatalytic and electrophysical properties, nanocrystalline titanium oxide (TiO2) is widely used in various fields. In the present work, a series of pure and Gd-modified (0.5, 5, 50 mol%) TiO2 nanocrystalline powders were prepared by a novel synthesis approach – extraction-pyrolytic method (EPM). Metal containing extracts on the basis of valeric acid were used as precursors. Thermal behavior of produced individual and mixed precursors were investigated by thermogravimetric analysis (TGA) and high temperature differential scanning colometry (HDSC). Phase composition of pure and Gd-modified TiO2 powders were studied as a function of pyrolysis temperature (450o -850°C ) and gadolinium content by X-ray diffraction (XRD) method. Photocatalytic activity of produced powders was studied by photocatalytic degradation of methylene blue (MB) under UV/VIS light irradiation.

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Section: Methodsmentioning

confidence: 99%

Synthesis of Nanocrystalline TiO<sub>2</sub> by the Extraction-Pyrolytic Method and its Phase Transformation in the Presence of Gadolinium

Burve

Serga

Krūmiņa

2021

KEM

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“…ZnO nanoparticles doped with Sm 3+ ions were confrmed as promising extremely active photocatalyst under UV illumination because of the reduction of the band gap, improved charge separation between electrons and holes, stability, and increased light absorption capacity [30,31]. Te electrochemical behaviour of the Sm 3+ ion-doped ZnO was investigated for sensing paracetamol.…”

Section: Introductionmentioning

confidence: 99%

Green-Synthesized Sm3+-Doped ZnO Nanoparticles for Multifunctional Applications

R.,

T.,

K. M.

et al. 2024

Advances in Materials Science and Engineering

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The present study focuses on the green-mediated synthesis of pristine and Sm3+-doped ZnO nanoparticles using Syzygium cumini fruit extract. The prepared material was characterized by various characterization techniques. Photocatalytic degradation of a fast orange red (FOR) dye under UV light resulted in 88% degradation, with a minimal decrease (87.90%) observed even after five successive runs, indicating the stability and effectiveness of the catalyst. The enhancement in degradation efficiency is attributed to the incorporation of Sm3+ ions into the ZnO lattice. Utilizing the optimized Sm3+ (5 mol%)-doped ZnO nanoparticles, cyclic voltammetry (CV) and electrochemical impedance spectra (EIS) were performed on the prepared electrode, demonstrating the excellent CV properties; this enhancement is attributed to the modification of ZnO’s redox chemistry and the alteration of charge transfer kinetics at the electrode-electrolyte interface due to the addition of Sm3+ into the ZnO structure. The antibacterial activity was performed against two pathogenic strains, i.e., Escherichia coli and Streptococcus aureus. The obtained results suggest that the prepared material holds great promise for catalytic, energy storage, antibacterial, and other multifunctional applications.

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“…These nanostructures have been applied in the photocatalytic field. A variety of studies show that the combination of Eu 2 O 3 and TiO 2 forms photocatalytic systems with strong catalytic activity in the visible light area [30][31][32].…”

Section: Introductionmentioning

confidence: 99%

Synthesis of photocatalytic TiO₂-Eu₂O₃ for phenol decomposition in wastewater

Tien

2021

Adv. Nat. Sci: Nanosci. Nanotechnol.

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Photocatalytic technology has many new applications and great potential in providing clean energy and decomposing organic pollutants in the environment. Among them, TiO2 is a good photochemical catalyst, but has a limitation that is only shown in ultraviolet light. To expand the application of photocatalytic materials using solar radiation in visible light, this research focuses on the semiconductor photochemical transformation process. In this study, TiO2-Eu2O3 nanomaterial was synthesised by the sol-gel method with polyvinyl alcohol used as gelling agent. The effects of the contents of TiO2, Eu2O3 and the sintering temperature of the gel were investigated. The obtained material samples were analysed for characteristics and properties by the surface analysis techniques SEM, EDX, TEM, XRD, the infrared spectrum and the UV–vis molecular absorption spectrum. Analysis of modified TiO2 according to EDX, XRD showed the formation of crystalline and evenly dispersed Eu2O3 particles in TiO2 phases with an average particle size of 20–50 nm. The photocatalytic activity of TiO2-Eu2O3 nanoparticles was determined by the phenol decomposition efficiency in the hypothetical water sample and the actual wastewater samples with a concentration of 10 ppm under ultraviolet light and visible light. The resulting phenol decomposition was more than 90% efficient after about 150 min.

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Characteristics and Photocatalytic Activity of Sm Doped ZnO Nanoparticles

Cited by 6 publications

References 6 publications

Synthesis of Nanocrystalline TiO<sub>2</sub> by the Extraction-Pyrolytic Method and its Phase Transformation in the Presence of Gadolinium

Synthesis of Nanocrystalline TiO<sub>2</sub> by the Extraction-Pyrolytic Method and its Phase Transformation in the Presence of Gadolinium

Green-Synthesized Sm3+-Doped ZnO Nanoparticles for Multifunctional Applications

Synthesis of photocatalytic TiO₂-Eu₂O₃ for phenol decomposition in wastewater

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Characteristics and Photocatalytic Activity of Sm Doped ZnO Nanoparticles

Cited by 6 publications

References 6 publications

Synthesis of Nanocrystalline TiO<sub>2</sub> by the Extraction-Pyrolytic Method and its Phase Transformation in the Presence of Gadolinium

Synthesis of Nanocrystalline TiO<sub>2</sub> by the Extraction-Pyrolytic Method and its Phase Transformation in the Presence of Gadolinium

Green-Synthesized Sm3+-Doped ZnO Nanoparticles for Multifunctional Applications

Synthesis of photocatalytic TiO2-Eu2O3 for phenol decomposition in wastewater

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Synthesis of photocatalytic TiO₂-Eu₂O₃ for phenol decomposition in wastewater