Structural, magnetic and antibacterial properties of manganese-substituted magnetite ferrofluids

Babukutty, Blessy; Ponnamma, Deepalekshmi; Nair, Suresh; Jose, Jiya; Bhat, Saritha G.; Thomas, Sabu

doi:10.1007/s12613-022-2594-1

Cited by 2 publications

(1 citation statement)

References 40 publications

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“…The antibacterial activity was quantified by measuring the average zone of inhibition in diameters (mm) that the leaf extract produced. [40][41] Antibacterial activity (Figure 10) of Mn 1-…”

Section: Antibacterial Studymentioning

confidence: 99%

Magnetic, Optical, Electrical and Antimicrobial Properties of MnCuZnFe₂O₄ Nanoparticles

Surendra Babu,

Bhonsle,

H.V.

et al. 2024

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The Mn0.92Cu0.08‐yZnyFe2O4 (y=0.02, 0.04, 0.06 and 0.08) nanoparticles (MCZF NPs) were synthesized via the hydrothermal process at low operating temperature. The MCZF system generated a cubic spinel structure as seen by the X‐ray diffraction patterns. The average crystallite size was observed to be increasing from 25 to 30 nm. The broad (γ1) and narrow (γ2) absorption bands were seen in FTIR spectra and the cation distributions at tetrahedral (A) and octahedral (B) sites, respectively, was indicated. The surface morphology was analyzed using electron microscopy. Clarification was provided for the dependence of the optical bandgap shift (Eg~1.96–2.15 eV) on the concentration of substituent. The superparamagnetic nature of MCZF can be advantageous for biomedical applications and it was demonstrated by the magnetization versus applied magnetic field (M−H) loops. Small values of remanence magnetization (Mr) and coercivity (Hc) were found using magnetization versus magnetic field (M−H) curves at y=0.02, 0.04, 0.06, and 0.08. This proved that MCZF NPs exhibited the superparamagnetic behavior. The cation distribution at two sublattices was also estimated using a two‐sublattice model. The greatest zone of inhibition in an antibacterial study of MCZF (produced by the green method) was 10.8 mm for Pseudomonosa aeruginosa and 9.4 mm for Staphylococcus aureus.

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Section: Antibacterial Studymentioning

confidence: 99%

Magnetic, Optical, Electrical and Antimicrobial Properties of MnCuZnFe₂O₄ Nanoparticles

Surendra Babu,

Bhonsle,

H.V.

et al. 2024

ChemistrySelect

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Crystal Form‐Dependent MnS for Diabetic Wound Healing: Performance and Mechanistic Insights

Duan,

Xu,

Zhang

et al. 2024

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In pharmaceuticals, the structural and functional alterations induced by biotransformation are well‐documented. Many pharmaceuticals exist in various crystal forms, which govern their transformation and significantly impact their activity. However, in the field of inorganic nanomedicine, there is a paucity of research focusing on the influence of crystal form‐dependent “metabolism” (transformation) on their activity and biomechanism. This study delves into the distinct performances of two crystal forms of manganese sulfide (MnS), namely α‐MnS and γ‐MnS, in bacteria‐infected diabetic wound healing. In the initial stage of a wound, where the environment is neutral to slightly alkaline, MnS partially converts to MnxOy (comprising Mn2O3 and Mn3O4) and concurrently produces hydrogen sulfide (H2S); the conversion efficiency of γ‐MnS significantly surpasses that of α‐MnS. Additionally, γ‐MnS is more soluble than α‐MnS, which allows it to generate more Mn2+. These components collectively contribute to the superior bacteriostatic properties of MnS. In wound related cells, MnS stimulates the production of collagen I and vascular endothelial growth factor (VEGF), promote the M1 macrophages polarizing to the M2 phenotype, for extracellular matrix (ECM) remodeling. Notably, different transformation products have distinct functions. Consequently, the activity of MnS is dependent on its original crystal form related solubility and transformation efficiency.

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Structural, magnetic and antibacterial properties of manganese-substituted magnetite ferrofluids

Cited by 2 publications

References 40 publications

Magnetic, Optical, Electrical and Antimicrobial Properties of MnCuZnFe₂O₄ Nanoparticles

Magnetic, Optical, Electrical and Antimicrobial Properties of MnCuZnFe₂O₄ Nanoparticles

Crystal Form‐Dependent MnS for Diabetic Wound Healing: Performance and Mechanistic Insights

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Structural, magnetic and antibacterial properties of manganese-substituted magnetite ferrofluids

Cited by 2 publications

References 40 publications

Magnetic, Optical, Electrical and Antimicrobial Properties of MnCuZnFe2O4 Nanoparticles

Magnetic, Optical, Electrical and Antimicrobial Properties of MnCuZnFe2O4 Nanoparticles

Crystal Form‐Dependent MnS for Diabetic Wound Healing: Performance and Mechanistic Insights

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Magnetic, Optical, Electrical and Antimicrobial Properties of MnCuZnFe₂O₄ Nanoparticles

Magnetic, Optical, Electrical and Antimicrobial Properties of MnCuZnFe₂O₄ Nanoparticles