Synthesis of Al2O3, MgO and MgAl2O4 by solution combustion method and investigation of performances in partial oxidation of methane

Özdemi̇r, Hasan; Öksüzömer, M.A. Faruk

doi:10.1016/j.powtec.2019.10.001

Cited by 36 publications

(16 citation statements)

References 48 publications

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“…Figure 5 a–g displays the morphology and statistical particle size distribution of Ni, Co and Fe-doped MgO. FE-SEM microstructure of samples shows homogeneous and uniform distribution of particles in a spherical-shape manner 50 . These particles are highly monodispersed and of narrow size distribution.…”

Section: Resultsmentioning

confidence: 99%

“…Most nanomaterials have antibacterial activity ascribed to various mechanisms, such as a strong reactive oxygen species (ROS), causing DNA damage and bacterial cell membrane 69 . Thus, the Ni, Co, Fe-doped MgO nanoparticles can interact with thiol groups of essential bacteria enzymes leading to their inactivation and cell death 50 . In another potential mode of mechanisms, the results of the antibacterial action of Ni, Co, Fe-doped MgO nanoparticles can be explained through the particle facilitated transport which the smaller size of metal oxide nanoparticles flood into the gram-negative bacteria cell wall.…”

Section: Resultsmentioning

confidence: 99%

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Probing the effect of Ni, Co and Fe doping concentrations on the antibacterial behaviors of MgO nanoparticles

Almontasser

Parveen

2022

Sci Rep

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The divalent transition metal ions (Ni, Co, and Fe)-doped MgO nanoparticles were synthesized via the sol–gel method. X-ray diffraction showed the MgO pure, single cubic phase of samples at 600 °C. Field emission electron microscope showed the uniform spherical shape of samples. The magnetic behavior of Ni, Co, Fe-doped MgO system were varied with Ni, Co, Fe content (0.00, 0.01, 0.03, 0.05, 0.07). The magnetic nature of pure had changed from paramagnetic to ferromagnetic. The number of oxygen vacancies increases with increasing amounts of dopant ions that lead to an ionic charge imbalance between Ni2+/Co2+/Fe2+ and Mg2+, leading to increase magnetic properties of the samples. The magnetic nature of prepared samples makes them suitable for biomedical applications. A comparative study of the antibacterial activity of nanoparticles against the Gram-negative (E. coli) and Gram-positive bacteria (S. aureus) was performed by disc diffusion, pour plate techniques, and study surface morphology of untreated and treated bacterial cell wall. An investigation of the antibacterial activity of doped MgO nanoparticles reveals that the doped MgO nanoparticles show effective antibacterial activity against the Gram-negative (E. coli) and Gram-positive (S. aureus) bacterium. The minimum inhibitory concentration of the synthesized nanoparticles against microorganisms was recorded with 40 μg/ml, while the maximum inhibitory concentration was observed with 80 μg/ml. At a concentration of 80 μg/ml, the complete growth inhibition of the E. coli was achieved with 7% Co-doped MgO and 7% Fe-doped MgO, while bacterial growth of S. aureus was inhibited by 100% in the presence of 7% Fe-doped MgO. The present work is promising for using nanomaterials as a novel antibiotic instead of the conventional antibiotics for the treatment of infectious diseases which are caused by tested bacteria.

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Section: Resultsmentioning

confidence: 99%

Section: Resultsmentioning

confidence: 99%

Probing the effect of Ni, Co and Fe doping concentrations on the antibacterial behaviors of MgO nanoparticles

Almontasser

Parveen

2022

Sci Rep

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“…Considering that silver‐alumina is a kind of metal composite, it can be expected that the mentioned composition has superior properties compared to both Ag and alumina. Ag‐Al 2 O 3 nanocomposite powders are interesting due to their excellent properties such as high catalytic activity, water, and sulfur resistance, 22 catalytic properties, 23 thermal resistance, 24 and antimicrobial activity, 25 DeNOx activity, 26 imaging and sensor applications 27 …”

Section: Introductionmentioning

confidence: 99%

Preparation of Ag‐Al₂O₃ nano structures by combustion method and investigation of photocatalytic activity

Einafshar

Khodadadipoor

Fazli

et al. 2021

Int J Applied Ceramic Tech

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In this research, Ag‐Al2O3 nanostructures have been prepared via combustion synthesis and ammonium acetate and urea have been applied as fuels. The prepared Ag‐Al2O3 nanostructures were characterized by DTA, XRD, SEM, TEM, and BET spectroscopy. The effect of different ratios of silver to alumina and fuel percentage on morphology and particle size of prepared products were investigated. The results showed that using ammonium acetate fuel led to the production of Ag‐γ‐Al2O3 nanocompounds, while using urea produced Ag‐α‐Al2O3. Also, the photocatalytic activity of Ag‐Al2O3 nanostructures for Congo red degradation was evaluated by UV‐Vis diffuse reflectance spectroscopy. The photocatalytic activity of Ag‐Al2O3 was examined under UV‐Vis irradiation and showed significant photocatalytic efficiency.

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“…Solution combustion synthesis (SCS) is an exciting technique, which involves propagation of self-sustained exothermic reactions along with an aqueous or sol-gel media. SCS has been utilized to synthesize a number of NPs such as ZnO, CuO, MgO, Al 2 O 3 , MgAl 2 O 4 using numerous organic compounds such as urea, oxalyl dihydrazide, citric acid, glycine as fuels [10][11][12][13]. SCS has many advantages over other methods and using plant extracts as reducing agents compared to chemicals being used as reductants [14].…”

Section: Introductionmentioning

confidence: 99%

Effect of doping (with cobalt or nickel) and UV exposure on the antibacterial, anticancer, and ROS generation activities of zinc oxide nanoparticles

Prashanth

Singh

et al. 2020

Journal of Asian Ceramic Societies

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We describe the synthesis, structural and morphological characteristics of cobalt and nickel doped zinc oxide nanoparticles (ZnO NPs) by solution combustion technique by utilizing lemon juice as bio-fuel. Structural parameters were confirmed by the X-ray Rietveld refinement method, all the compounds were crystallized in the wurtzite hexagonal structure with space group P63mc (No. 186). Field emission scanning electron microscopy coupled with energy dispersive X-ray elemental mapping results revealed agglomerated spherical shaped particles and dopant ions were homogeneously distributed. Antibacterial, anticancer, and reactive oxygen species (ROS) generation activities were studied on undoped ZnO-, Co-, and Ni-doped ZnO nanoparticles upon un-exposed/exposed to ultraviolet radiations at 300 nm for 1 h. Antibacterial studies were performed against Salmonella enterica and Clostridium perfringens. Anticancer activity was tested on HeLa and MCF-7 cell lines. Generation of ROS was studied in J744 mouse macrophage cells. Doping of cobalt or nickel in the ZnO lattice enhanced antibacterial, anticancer, and oxidative response generation activities compared to undoped ZnO NPs. These activities were further improved upon exposure to ultraviolet radiations. Together, data indicate a direct activity of ZnO NPs against bacteria, cancer cells and simultaneously boosting host's immunity via inducing activation of immune cells (mouse macrophage cells).

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Synthesis of Al2O3, MgO and MgAl2O4 by solution combustion method and investigation of performances in partial oxidation of methane

Cited by 36 publications

References 48 publications

Probing the effect of Ni, Co and Fe doping concentrations on the antibacterial behaviors of MgO nanoparticles

Probing the effect of Ni, Co and Fe doping concentrations on the antibacterial behaviors of MgO nanoparticles

Preparation of Ag‐Al₂O₃ nano structures by combustion method and investigation of photocatalytic activity

Effect of doping (with cobalt or nickel) and UV exposure on the antibacterial, anticancer, and ROS generation activities of zinc oxide nanoparticles

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