Fabrication and formation mechanism of Mn<sub>2</sub>O<sub>3</sub> hollow nanofibers by single-spinneret electrospinning

Yang, Guorui; Yan, Wei; Wang, Jianan; Yang, Honghui

doi:10.1039/c4ce00521j

Cited by 68 publications

(34 citation statements)

References 67 publications

(69 reference statements)

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“…Forming a composite with Fe 2 O 3 and protecting ZnO from dissolution during light irradiation were also reported [7]. And among different crystalline polymorphs of manganese oxide, the Mn 2 O 3 phase shows a unique property [8].…”

Section: Introductionmentioning

confidence: 96%

PVA assisted ZnO based mesoporous ternary metal oxides nanomaterials: synthesis, optimization, and evaluation of antibacterial activity

Abebe

Murthy

Zereffa

et al. 2020

Mater. Res. Express

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The poly (vinyl alcohol) (PVA) assisted highly mesoporous Zn-Fe-Mn oxides nanomaterials were synthesized using the sol-gel followed by the self-propagation techniques. The UV-vis spectroscopic technique was used to study the optical properties of the materials. The presence of metal-oxygen bond and deposited OH − /H 2 O species were characterized by FT-IR spectroscopic technique. The porous morphology and elemental analysis were confirmed by the SEM/EDX and further morphological and crystal structure studies were conducted using TEM/HRTEM techniques. The semi-crystallinity and composition analyses were verified from XRD patterns. Using the BET N 2 adsorption-desorption analytical techniques; the porosity, specific surface area, and pore diameter enhancements were confirmed. The optima of PVA and precursors percentage were selected with the help of XRD, UV-Vis, and SEM techniques. The potential of the materials towards antibacterial activities was evaluated against both Gram-negative Escherichia coli and Gram-positive Staphylococcus aureus bacteria. The 50(0.7) PVA assisted ternary metal oxide nanocomposite (PVA-TMONC) with 125 μg ml −1 concentration showed better inhibition zone for both Escherichia coli and Staphylococcus aureus bacteria, with a value of 28 and 29 mm in diameter, respectively.

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Section: Introductionmentioning

confidence: 96%

PVA assisted ZnO based mesoporous ternary metal oxides nanomaterials: synthesis, optimization, and evaluation of antibacterial activity

Abebe

Murthy

Zereffa

et al. 2020

Mater. Res. Express

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“…For the pure Mn 100 material, the XRD result reveals that the Mn 2 O 3 phase is produced (Figure a) . The XRD peaks positioned at 2 θ values of 23.1, 33.0, 38.3, 45.2, 49.3, 55.2, 60.6, 64.2, 65.8 and 67.5° can be indexed to the planes in a Mn 2 O 3 phase (COD no:95‐151‐4120) . To further confirm the presence of Mn 2 O 3 rather than Mn 3 O 4 , XRD studies were also conducted on the Ru 100 powders prepared at the same annealing temperature (Figure b).…”

Section: Resultsmentioning

confidence: 97%

“…Powder XRD (PXRD) patterns obtained for the pure and mixed Mn/Ru‐oxide materials are in good agreement with reference patterns. For the pure Mn 100 material, the XRD result reveals that the Mn 2 O 3 phase is produced (Figure a) . The XRD peaks positioned at 2 θ values of 23.1, 33.0, 38.3, 45.2, 49.3, 55.2, 60.6, 64.2, 65.8 and 67.5° can be indexed to the planes in a Mn 2 O 3 phase (COD no:95‐151‐4120) .…”

Section: Resultsmentioning

confidence: 99%

Thermally Prepared Mn₂O₃/RuO₂/Ru Thin Films as Highly Active Catalysts for the Oxygen Evolution Reaction in Alkaline Media

et al. 2016

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Herein, a thermal decomposition method was utilised to fabricate pure and mixed manganese and ruthenium oxides as catalysts for the oxygen evolution reaction (OER). X‐ray photoelectron spectroscopy (XPS) and X‐ray diffraction (XRD) reveal the manganese and ruthenium species produced at an annealing temperature of 600 °C to be Mn2O3 and RuO2/Ru, respectively. A number of the mixed Mn/Ru oxides exhibit overpotential values approximately 200 mV lower than previously reported for Mn2O3/RuO2 oxides (at a current density of 10 mA cm−2) for the OER, whereas the Mn 50 material exhibits similar overpotentials reported in the literature for RuO2. Turnover frequency (TOF) numbers for the Mn/Ru oxides were also calculated, and the results show that the TOF values for some of the materials in this work are higher than RuO2. XPS analysis indicates a change in chemical environment of the Mn/Ru materials, which exhibit higher TOF values. Subsequently, the pure Ru 100 material used in this study has a lower overpotential at 10 mA cm−2, as compared to previously reported values in the literature for RuO2 in alkaline media. This may be attributed to the presence of metallic Ru found in the film or the decrease in crystallite size, as determined by XRD. XPS analysis was also carried out after the OER to help determine the order of activity of the materials in this work.

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“…Just as we discussed above, electrospinning technique is a very facile and novel method to prepare 1D nanomaterials. Recently, Yang et al prepared hollow Mn 2 O 3 nanofibers through single nozzle electrospinning [26] . In this paper, we prepared a complex coaxial-cable like Mn 2 O 3 nanofiber via single-nozzle electrospinning method.…”

Section: Introductionmentioning

confidence: 99%

“…The chemical valence of manganese includes 2 + , 3 + , 4 + and 6 + . Amongst them, Mn 2 O 3 exhibits distinctive chemical and physical properties [26] . Recently, Mn 2 O 3 nanomaterials have attracted great attention as the electrode materials for Li-ion battery [27][28][29][30] .…”

Section: Introductionmentioning

confidence: 99%

Facile fabrication of coaxial-cable like Mn 2 O 3 nanofiber by electrospinning: Application as electrode material for supercapacitor

Liang

Cao³

et al. 2016

Journal of the Taiwan Institute of Chemical Engineers

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Fabrication and formation mechanism of Mn₂O₃ hollow nanofibers by single-spinneret electrospinning

Abstract: Well-defined Mn2O3 hollow nanofibers with a smooth wall were successfully fabricated by the single-spinneret electrospinning method. The possible formation mechanism was introduced based on temperature-dependent experiments.

Cited by 68 publications

References 67 publications

PVA assisted ZnO based mesoporous ternary metal oxides nanomaterials: synthesis, optimization, and evaluation of antibacterial activity

PVA assisted ZnO based mesoporous ternary metal oxides nanomaterials: synthesis, optimization, and evaluation of antibacterial activity

Thermally Prepared Mn₂O₃/RuO₂/Ru Thin Films as Highly Active Catalysts for the Oxygen Evolution Reaction in Alkaline Media

Facile fabrication of coaxial-cable like Mn 2 O 3 nanofiber by electrospinning: Application as electrode material for supercapacitor

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Fabrication and formation mechanism of Mn2O3 hollow nanofibers by single-spinneret electrospinning

Abstract: Well-defined Mn2O3 hollow nanofibers with a smooth wall were successfully fabricated by the single-spinneret electrospinning method. The possible formation mechanism was introduced based on temperature-dependent experiments.

Cited by 68 publications

References 67 publications

PVA assisted ZnO based mesoporous ternary metal oxides nanomaterials: synthesis, optimization, and evaluation of antibacterial activity

PVA assisted ZnO based mesoporous ternary metal oxides nanomaterials: synthesis, optimization, and evaluation of antibacterial activity

Thermally Prepared Mn2O3/RuO2/Ru Thin Films as Highly Active Catalysts for the Oxygen Evolution Reaction in Alkaline Media

Facile fabrication of coaxial-cable like Mn 2 O 3 nanofiber by electrospinning: Application as electrode material for supercapacitor

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Fabrication and formation mechanism of Mn₂O₃ hollow nanofibers by single-spinneret electrospinning

Thermally Prepared Mn₂O₃/RuO₂/Ru Thin Films as Highly Active Catalysts for the Oxygen Evolution Reaction in Alkaline Media