Nanostructured MnO₂‐Based Zn‐Doped Bi₂O₃ Nanocomposite for Improved Antimicrobial and Photocatalytic Applications

ChemistrySelect, Год журнала: 2024, Номер 9(37)

Опубликована: Сен. 27, 2024

Abstract This study reports the synthesis of MnO₂‐based Zn (5%)‐doped Bi₂O₃ nanocomposites via coprecipitation, highlighting significant improvements in photocatalytic and antimicrobial properties. XRD confirmed tetragonal β‐Bi₂O₃ phase with reduced crystallite size postdoping, while FESEM showed spherical particles 8.61 nm. A decreased band gap 2.61 eV defect‐related PL emissions were observed, enhancing activity. The material demonstrated 92.4% 99.50% efficiency for methylene blue (MB) rhodamine B (Rh.B) degradation under sunlight, outperforming undoped Bi₂O₃. I–V plots revealed electrical resistance increased photosensitivity (8.58%), indicating potential optoelectronic applications. Antifungal tests inhibition zones 16 11 mm against Fusarium Aspergillus , respectively. Compared to previous studies, this work offers improved antifungal performance, attributed crystalline size, surface area, enhanced defect formation, positioning it as a promising environmental biomedical

Язык: Английский

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Hydrothermally grown hollandite manganese dioxide nanorods: evaluation of supercapattery performance and photocatalytic efficiency

Ionics, Год журнала: 2024, Номер unknown

Опубликована: Июнь 14, 2024

Язык: Английский

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Novel nanophotocatalytic double Z-scheme CdS/Ag-AgBr/Au-loaded amino-defective-UiO-66(Ce) for rapid high throughput reusable photocatalytic methanol synthesis from CO2

Fuel, Год журнала: 2024, Номер 385, С. 134139 - 134139

Опубликована: Дек. 20, 2024

Язык: Английский

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ZnO Modified g‐C₃N₄–MnO₂ Composite for Photodegradation of Methylene Blue

ChemistrySelect, Год журнала: 2025, Номер 10(1)

Опубликована: Янв. 1, 2025

Abstract Single ZnO (NM1), MnO 2 (NM2) nanoparticles, and –g‐C 3 N 4 –ZnO (NM4) nanocomposite were synthesized by the sol–gel method, whereas g‐C (NM3) was polymerization of urea. The as‐synthesized materials characterized thermogravimetric‐differential thermal (TGA‐TDA), Fourier transformer (FTIR), X‐ray diffraction (XRD), diffuse reflectance spectroscopy (DRS), scanning electron microscopy (SEM), high‐resolution transmission (HRTEM).The bandgap NM4 lower than those NM1, NM2, NM3 photocatalysts, which is applicable in visible region. photocatalytic activities studied under light radiation. efficacy composite 5, 3.4, 3‐fold higher materials. This enhancement might be ascribed to synergistic effect. Besides, degraded 94% methylene blue (MB) 81% real sample. rate constant ( k ) for NM3, also resulted 0.00327, 0.0046, 0.0056, 0.0156 min −1 , respectively. reusing carried out four sequential rounds 94%, 92.6%, 91%, 89% degradation efficiency 1st, 2nd, 3rd, 4th round, result suggests that cost‐effective stable.

Язык: Английский

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Zn0.96Bi0.02M0.02O (M = V or Cu) semiconductor: high-spin ferromagnetic order and fast removal of toxic organic chemicals under solar lighting

Journal of Materials Science Materials in Electronics, Год журнала: 2025, Номер 36(4)

Опубликована: Фев. 1, 2025

Язык: Английский

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An innovative composite Mn/Ti photocatalysts developed for the removal of elemental mercury and nitric oxide

Journal of the Taiwan Institute of Chemical Engineers, Год журнала: 2025, Номер 171, С. 106055 - 106055

Опубликована: Март 7, 2025

Язык: Английский

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Synthesis of MnO2@2DrGO hybrid nanocomposite for efficient removal of hazardous textile dyes from water

Ionics, Год журнала: 2025, Номер unknown

Опубликована: Март 25, 2025

Язык: Английский

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Achieving Complete Remediation of Tetracycline Contaminated Water Using a PVDF/δ-MnO2 Photocatalytic Membrane Reactor

Journal of Membrane Science, Год журнала: 2025, Номер unknown, С. 124097 - 124097

Опубликована: Апрель 1, 2025

Язык: Английский

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Towards the Sustainable Production of Ultra-Low-Sulfur Fuels through Photocatalytic Oxidation

Catalysts, Год журнала: 2022, Номер 12(9), С. 1036 - 1036

Опубликована: Сен. 12, 2022

Nowadays, the sulfur-containing compounds are removed from motor fuels through traditional hydrodesulfurization technology, which takes place under harsh reaction conditions (temperature of 350–450 °C and pressure 30–60 atm) in presence catalysts based on alumina with impregnated cobalt molybdenum. According to principles green chemistry, energy requirements should be recognized for their environmental economic impacts minimized, i.e., chemical processes carried out at ambient temperature atmospheric pressure. This approach could implemented using photocatalysts that sensitive visible light. The creation highly active photocatalytic systems deep purification sulfur becomes an important task modern catalysis science. present critical review reports recent progress over last 5 years heterogeneous desulfurization light irradiation. Specific attention is paid methods boosting activity materials, a focus heterojunctions as most promising approach. also discusses influence operating parameters (nature oxidant, molar ratio oxidant/sulfur-containing compounds, photocatalyst loading, etc.) efficiency. Some perspectives future research directions provided.

Язык: Английский

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Improving the Photocatalytic Performance of Porous Ceria under Visible Light Illumination via Mn Incorporation

Catalysts, Год журнала: 2023, Номер 13(3), С. 523 - 523

Опубликована: Март 4, 2023

Porous cerium oxide (ceria) nanoparticles were prepared with and without manganese (Mn) by using the flash combustion technique. Samples different loadings (Ce/Mn ratio ranged from 100 to 10) a one-step process water only as solvent. Moreover, citric acid was utilized fuel in an aqueous medium, overall synthesis mixture dried at °C overnight then calcinated 550 for 3 h. The obtained final solid product characterized inductively coupled plasma (ICP), X-ray powder diffraction (XRD), diffuse reflectance ultraviolet-visible spectroscopy (DR-UV-Vis), scanning electron microscopy (SEM), which Energy Dispersive X-Ray Analysis (EDX), high resolution transmission (HR-TEM), photoluminescence (PL) analysis. characterization data showed that Mn ions totally incorporated into framework of ceria up applied loading. Under visible light illumination, photocatalytic activity samples tested decolorization reaction methyl green (MG) dye (wavelength greater than 425 nm). results increasing content improved ceria. sample Ce/Mn 10 performed 1.8 times better bare porous Finally, reusability best-performing investigated four consecutive runs treatment, slight deactivation monitored after fourth run.

Язык: Английский

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