WO₃/Cu₂O-CuO and WO₃/Au/Cu₂O-CuO heterojunctions photocatalysts for self-cleaning and photocatalytic degradation of organic pollutants applications

Physica Scripta, Год журнала: 2024, Номер 99(10), С. 105964 - 105964

Опубликована: Авг. 29, 2024

Abstract In this work, a high-performance WO 3 /Au/Cu 2 O-CuO heterojunctions was deposited via dc reactive magnetron sputtering, which displayed superhydrophilicity conversion and superior photocatalytic performance for the degradation of methylene blue. , /Cu O-CuO, /Au were sputtered on precleaned glass Si(100) substrates. The chemical composition, crystal structure, surface morphology, optical absorption, water contact angle activities prepared single multilayers films examined to elucidate correlation between structure other properties. SEM revealed tiny small nanoparticles film, close-packed with more open heterojunctions. had highest absorption. estimated band gap values 3.16, 3.08, 2.97 2.65 eV respectively. became superhydrophilic after UV illumination. remarkable is attributed enhanced efficiency separation photogenerated hole–electron pairs.

Язык: Английский

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Development of MoS2 anchored 2D exfoliated titanate nanosheets thin film for Efficient photocatalytic degradation of organic pollutants

Materials Science and Engineering B, Год журнала: 2024, Номер 313, С. 117892 - 117892

Опубликована: Дек. 6, 2024

Язык: Английский

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Synthesis and Characterization of SnO₂/α-Fe₂O₃, In₂O₃/α-Fe₂O₃, and ZnO/α-Fe₂O₃ Thin Films: Photocatalytic and Antibacterial Applications

Surfaces, Год журнала: 2025, Номер 8(1), С. 8 - 8

Опубликована: Янв. 9, 2025

The fabrication of metal oxide semiconductor heterostructures is a major way to enhance their properties in photocatalytic and antibacterial applications. In the present work, ZnO/α-Fe2O3, In2O3/α-Fe2O3, SnO2/α-Fe2O3 are chosen create heterostructure thin films using spray pyrolysis method. This paper compares experimental results structural morphological prepared layers XRD, Raman SEM. X-ray diffraction shows that obtained film crystallize hexagonal phase ZnO, cubic In2O3 tetragonal structure SnO2, with all preceding phases positioned on rhombohedral hematite α-Fe2O3. addition, SEM study provided morphology surface confirmed presence highly folded, rough, uneven imperfections 20 65 nm for In2O3/α-Fe2O3 SnO2/α-Fe2O3. photoactivity materials was tested via degradation methylene blue (MB) dye. Consequently, our findings demonstrate cracked improves rapid absorption contaminants allows water easily pass through layers. Finally, abilities were investigated by agar well-diffusion technique, comparing Gram-negative Pseudomonas aeruginosa Gram-positive Bacillus subtilis, these found have high activity.

Язык: Английский

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Heavy metal removal from wastewater by SnS thin films deposited by the modified SILAR technique at ambient temperature

Materials Chemistry and Physics, Год журнала: 2025, Номер unknown, С. 130939 - 130939

Опубликована: Апрель 1, 2025

Язык: Английский

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Characterization of Pd-modified TiO2-based thin films and their effect on photocatalytic activity

Deleted Journal, Год журнала: 2025, Номер 20(1)

Опубликована: Апрель 30, 2025

Abstract Thin film technology has made significant contributions to the field of photocatalysis through improvements in surface properties and a decrease material costs. Therefore, present study aims evidence that Pd can confer TiO 2 thin films prepared by chemical vapor deposition technique verify their effectiveness as photocatalysts degradation reaction carbinol-based malachite green dye. with different nominal contents (2.8, 3.7, 4.6, 6.4 at. % Pd) synthesized CVD at 400 °C 1 Torr pressure exhibit changes crystal structure, morphology, electronic properties. On one hand, low concentrations (2.8 3.7 Pd), substitutional doping is promoted. In contrast, increase concentration (4.6 encourages formation PdO PdTiO 3 phases, indicated X-ray diffraction, Raman spectroscopy, photoelectron spectroscopy results. The anatase phase partially inhibited other such Pd–O Ti-Pd–O; consequently, grain size constitutes considerably reduced, microstrains are increased. optical reveals bandgap energy recombination velocity charge carriers, resulting maximum 67% dye, which obtained 4.6 Pd, attributed synergistic effect between observed

Язык: Английский

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CO gas-sensing properties and DFT investigation of pure and Co-modified MoO3 nanostructures: effect of solvent composition, deposition time, and cobalt concentration

Journal of Materials Science Materials in Electronics, Год журнала: 2024, Номер 35(10)

Опубликована: Апрель 1, 2024

Язык: Английский

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Biogenic fabrication of NiO-ZnO-CaO ternary nanocomposite using Azadirachta Indica (Neem) leaves extract with proficient photocatalytic degradation of rhodamine B dye

Materials Science and Technology, Год журнала: 2024, Номер unknown

Опубликована: Сен. 24, 2024

In the current study, a ternary nanocomposite (NiO–ZnO–CaO) was successfully synthesized through co-precipitation method using Azadirachta Indica (neem) leaves extract as green approach. The characterization of prepared conducted FT-IR, XRD, SEM and EDS to determine metal oxides absorption bands, structural properties, elemental composition, surface morphology nanocomposite. FT-IR analysis revealed characteristic vibrational peaks at 621, 684, 721 cm −1 , corresponding Ni-O, Zn-O, Ca-O bond vibrations, respectively. XRD patterns showed distinct diffraction peaks, indicative hexagonal structure ZnO cubic structures NiO CaO. confirmed presence calcium, nickel, zinc, oxygen with weight percentages 9.2%, 14.4%, 15.1%, 20.9%, images displayed an irregular cube like noticeable clustering within employed photocatalyst exhibited degradation efficiency (97%) against rhodamine B dye under 180 min irradiation time. kinetic studies on were accurately explained by first-order kinetics model, all R 2 > 95, signifying strong correlation between time concentration. potocatalytic mechanism proposed based band positions NiO, CaO forming double type II heterojunction. Furthermore, species trapping experiments employing different scavengers carried out, revealing active participation OH ● O ●─ radicals in mechanism.

Язык: Английский

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Pulsed Electro Decoration of Carbon Nanotubes with FexZn1−xS

Coatings, Год журнала: 2024, Номер 14(5), С. 619 - 619

Опубликована: Май 14, 2024

A wide ranging scientific interest in developing new and simple preparation methods for highly catalytic bimetallic sulfides provided our motivation to explore the possibility of using pulsed electrodeposition technique decoration a carbon nanotubes forest. The were obtained hot-filament chemical vapor deposition technique. non-thermal plasma treatment enabled controlled creation defects on nanotubes’ surface. These served as anchoring sites subsequent Fe Zn nanoparticles Our findings showed that only case prior formation FeZn bimetallic-based nanoparticles, with present mainly outer surface core. To induce sulfurization, thermal sulfur was conducted at 500 °C, heterostructure consisted Fe0.3Zn0.7S main phase, minor presence ZnS S residues, which deduced from XRD results. This study provides thorough imaging process, presenting each step SEM/HR-TEM findings, coupled EDS analyses. samples tested photocatalytic degradation methyl blue dye demonstrate photoactive behavior heterostructure.

Язык: Английский

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A comparative study of Cu-based nanoparticles and their spin-coated films: photocatalytic degradation mechanisms and efficiencies towards malachite green and neutral red azo dyes

Environmental Science and Pollution Research, Год журнала: 2024, Номер 32(1), С. 314 - 334

Опубликована: Дек. 17, 2024

Язык: Английский

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