The role of cobalt doping on the optical and structural properties of Mn3O4 nanostructured thin films obtained by SILAR technique

Bayram, Özkan; İgman, Erdal; Güney, Harun; Şimşek, Önder

doi:10.1016/j.spmi.2019.01.025

Cited by 18 publications

(14 citation statements)

References 65 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The results confirmed that the thin films of direct band gap in which the obtained curves are linear for n

1/2. The values of the energy gap for Mn 2 O 3 and Co-doped Mn 2 O 3 were 2.95 eV and 2.80 eV, respectively, which prove the increase in free charge carriers by absorbing photon energy and the transfer of more electrons to the conduction band [ 42 , 43 ].…”

Section: Resultsmentioning

confidence: 99%

Modulation of the Morphological Architecture of Mn2O3 Nanoparticles to MnCoO Nanoflakes by Loading Co3+ Via a Co-Precipitation Approach for Mosquitocidal Development

et al. 2023

View full text Add to dashboard Cite

The spread of many infectious diseases by vectors is a globally severe issue. Climate change and the increase of vector resistance are the primary sources of rising mosquito populations. Therefore, advanced approaches are needed to prevent the dispersal of life-threatening diseases. Herein, Mn2O3 NPs and MnCoO nanocomposites were presented as mosquitocidal agents. The synthesized samples were prepared by a co-precipitation route and characterized using different techniques indicating the change of host Mn2O3 structure to 2D MnCoO nanoflakes with Co3+ integration. The thermal decomposition of the nanoparticles was examined by TGA analysis, showing high stability. The energy gap () of Mn2O3 was estimated within the visible spectrum of the value 2.95 eV, which reduced to 2.80 eV with doping support. The impact of Mn2O3 and MnCoO on immature stages was investigated by semithin photomicrographs exhibiting significant changes in the midgut, fat tissue and muscles of the third larval instar. Moreover, the external deformations in pupae were examined using scanning electron microscopy (SEM).

show abstract

“…The results confirmed that the thin films of direct band gap in which the obtained curves are linear for n

Section: Resultsmentioning

confidence: 99%

Modulation of the Morphological Architecture of Mn2O3 Nanoparticles to MnCoO Nanoflakes by Loading Co3+ Via a Co-Precipitation Approach for Mosquitocidal Development

et al. 2023

View full text Add to dashboard Cite

show abstract

“…Vijayakumar et al [13] have investigated the effect of cobalt doping on the electrochemical properties of the Mn 3 O 4 nanoparticles. Bayram et al [14] have also studied the effect of cobalt doping on the linear optical parameters of Mn 3 O 4 and they declare an enhancement of these parameters.…”

Section: Doi: 101002/crat202300235mentioning

confidence: 99%

“…Bayram et al. [ 14 ] have also studied the effect of cobalt doping on the linear optical parameters of Mn 3 O 4 and they declare an enhancement of these parameters.…”

Section: Introductionmentioning

confidence: 99%

Effect of Cobalt Doping on The Structural, Linear and Nonlinear Optical Parameters of Manganese Oxide Thin Layers

Rossi,

Ghannam,

Brioual

et al. 2023

Cryst. Res. Technol.

View full text Add to dashboard Cite

In this study, undoped and cobalt‐doped manganese oxide Co:Mn3O4 (0, 2, and 4 at%) are elaborated by the spray pyrolysis procedure on glass substrates. The effect of cobalt doping concentrations on the structural, morphological, and optical features (linear and nonlinear) are investigated through the X‐ray diffractometer, Raman spectroscopy, Scanning Electron Microscopy with an attached energy dispersive X‐ray and UV–Vis‐NIR spectrophotometer. The XRD investigations exhibit a polycrystalline tetragonal structure for all Co:Mn3O4 and confirm by Raman results with the distinctive tetragonal mode A1g at 657 cm−1. The SEM images show an increase in roughness as cobalt doping concentration increases. The EDS quantitative analysis revealed the presence of manganese, oxygen, and cobalt. Furthermore, the optical investigation is pursued firstly through the linear optical that showed a decrease in the transmittance, and optical band gap energy as the cobalt concentration increased due to oxygen vacancies and defects and the increase of refractive index from 2.05 to 2.21. Second, the nonlinear optical parameters show a high value of the nonlinear refractive index 3.75 × 10−7 (esu) and the third‐order susceptibility χ3 = 2.2 × 10−8(esu) of Co:Mn3O4(2at%). These values put the Co:Mn3O4(2at%) thin layer as a candidate in the optoelectronic applications as a third‐order nonlinear medium.

show abstract

“…With the aim of improving the performance of Mn 3 O 4 electrodes, researchers have been utilized various approaches such as nano structuring, doping, forming composites, etc. − Incorporating a different element to form mixed oxides is one such strategy that may alter the electrochemical properties depending on the changes the dopant brings in the properties of the material. Thus, far, various elements such as Ni, Fe, Cr, Co, Zn, Cu, etc. were used as dopants for Mn 3 O 4 to tune their electrochemical properties.…”

Section: Introductionmentioning

confidence: 99%

Elucidating the Role of Copper-Induced Mixed Phases on the Electrochemical Performance of Mn-Based Thin-Film Electrodes

Adoor,

Hegde,

Bhat

et al. 2023

ACS Omega

View full text Add to dashboard Cite

Manganese oxide is a fascinating material for use as a thin-film electrode in supercapacitors. Herein, the consequences of copper incorporation on spray pyrolyzed manganese oxide thin films and their electrochemical performance were investigated. The Cu-incorporated manganese oxide thin films were deposited by spray pyrolysis, and their structural and electrochemical properties were thoroughly evaluated. The formation of the spinel Mn 3 O 4 phase with effective Cu incorporation was confirmed by X-ray diffraction investigation. Through Raman studies, it was noticed that mixed phases of manganese oxide tend to form after Cu incorporation, and this result was also reflected in X-ray photoelectron spectroscopic studies. The surface morphology and roughness were also altered by the addition of copper. However, electrochemical measurements implied a reduction in the specific capacitance upon copper inclusion. The cyclic voltammetry test indicated a specific capacitance of 132 F/g for Mn 3 O 4 electrodes, but a substantial drop for copper-incorporated samples due to the mixed manganese phase. The decremental tendency was further supported by galvanostatic charge–discharge studies and electrochemical impedance spectroscopic measurements. These results provide valuable insights into the effects of copper addition in manganese oxide thin-film-based electrodes for energy storage applications.

show abstract

The role of cobalt doping on the optical and structural properties of Mn3O4 nanostructured thin films obtained by SILAR technique

Cited by 18 publications

References 65 publications

Modulation of the Morphological Architecture of Mn2O3 Nanoparticles to MnCoO Nanoflakes by Loading Co3+ Via a Co-Precipitation Approach for Mosquitocidal Development

Modulation of the Morphological Architecture of Mn2O3 Nanoparticles to MnCoO Nanoflakes by Loading Co3+ Via a Co-Precipitation Approach for Mosquitocidal Development

Effect of Cobalt Doping on The Structural, Linear and Nonlinear Optical Parameters of Manganese Oxide Thin Layers

Elucidating the Role of Copper-Induced Mixed Phases on the Electrochemical Performance of Mn-Based Thin-Film Electrodes

Contact Info

Product

Resources

About