Selective synthesis and characterization of iron oxide nanoparticles via PVA/PVP polymer blend as structure-directing agent

Aziz, Wessam N. Abdel; Bumajdad, Ali; Al‐Sagheer, Fakhreia; Madkour, Metwally

doi:10.1016/j.matchemphys.2020.122927

Cited by 18 publications

(6 citation statements)

References 31 publications

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“…Raman analysis provides further information about the vibrational mode of the synthesized nanocomposite (Figure d). An intense peak at 655 cm –1 was assigned to the stretching vibration of the Fe–O–Fe bond in the observed spectrum . The bond at 484 cm –1 corresponds to the Zn–O–Fe mode of vibrations in LDH layers .…”

Section: Resultsmentioning

confidence: 83%

“…An intense peak at 655 cm −1 was assigned to the stretching vibration of the Fe−O−Fe bond in the observed spectrum. 47 The bond at 484 cm −1 corresponds to the Zn−O− Fe mode of vibrations in LDH layers. 48 vibration.…”

Section: Resultsmentioning

confidence: 99%

“…An intense peak at 655 cm –1 was assigned to the stretching vibration of the Fe–O–Fe bond in the observed spectrum. 47 The bond at 484 cm –1 corresponds to the Zn–O–Fe mode of vibrations in LDH layers. 48 Characteristic peaks of interlayer anions predominated at 1095 and 1037 cm –1 , caused by the occurrence of the NO 3 – and CO 3 –2 ions.…”

Section: Resultsmentioning

confidence: 99%

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Efficient Dye Degradation and Antimicrobial Behavior with Molecular Docking Performance of Silver and Polyvinylpyrrolidone-Doped Zn-Fe Layered Double Hydroxide

Ahmad,

Shahzadi,

Haider

et al. 2024

ACS Omega

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Zn−Fe layered double hydroxide (LDH) was synthesized through the low-temperature-based coprecipitation method. Various concentrations of Ag (1, 3, and 5 wt %) with a fixed amount (5 wt %) of polyvinylpyrrolidone (PVP) were doped into LDH nanocomposites. This research aims to improve the bactericidal properties and catalytic activities of doping-dependent nanocomposites. Adding Ag and PVP to LDH enhanced oxygen vacancies, which increased the amount of hydroxide adsorption sites and the number of active sites. The doped LDH was employed to degrade rhodamine-B dye in the presence of a reducing agent (NaBH 4 ), and the obtained results showed maximum dye degradation in a basic medium compared to acidic and neutral. The bactericidal efficacy of doped Zn−Fe (5 wt %) showed a considerably greater inhibition zone of 3.65 mm against Gram-negative (G−ve) or Escherichia coli (E. coli). Furthermore, molecular docking was used to decipher the mystery behind the microbicidal action of Ag-doped PVP/Zn−Fe LDH and to propose an inhibition mechanism of β-ketoacyl-acyl carrier protein synthase II E. coli (FabH) and deoxyribonucleic acid gyrase E. coli behind in vitro results.

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Section: Resultsmentioning

confidence: 83%

Section: Resultsmentioning

confidence: 99%

Section: Resultsmentioning

confidence: 99%

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Efficient Dye Degradation and Antimicrobial Behavior with Molecular Docking Performance of Silver and Polyvinylpyrrolidone-Doped Zn-Fe Layered Double Hydroxide

Ahmad,

Shahzadi,

Haider

et al. 2024

ACS Omega

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“…D corresponds to the average crystallite size, K = 0.9 is a constant related to the crystallite shape, λ corresponds to X-ray wavelength, θ is the Bragg's angle, and β is the peak width of the diffraction peak profile at half maximum height [119]. A dispersion of IONPs in chitosan solution was reported, which present six characteristic peaks identified by their crystal planes (220), ( 311), ( 400), ( 422), (511), and (440) which correspond to iron oxide [120].…”

Section: X-ray Diffraction (Xrd)mentioning

confidence: 99%

“…The massive production of MNPs has been restricted by slow procedures, high costs, and low yield. Therefore, it is necessary to study known synthetic processes or alternative routes to control nanoparticle characteristics such as composition, size, shape, magnetization, and surface charge [119]. Most of the chemical and physical methods used to produce nanomaterials are toxic and involve high-energy consumption; for that reason, the major challenge consists of developing eco-friendly methods.…”

Section: Perspectives and Future Challengesmentioning

confidence: 99%

Polymeric Composite of Magnetite Iron Oxide Nanoparticles and Their Application in Biomedicine: A Review

et al. 2022

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A broad spectrum of nanomaterials has been investigated for multiple purposes in recent years. Some of these studied materials are magnetics nanoparticles (MNPs). Iron oxide nanoparticles (IONPs) and superparamagnetic iron oxide nanoparticles (SPIONs) are MNPs that have received extensive attention because of their physicochemical and magnetic properties and their ease of combination with organic or inorganic compounds. Furthermore, the arresting of these MNPs into a cross-linked matrix known as hydrogel has attracted significant interest in the biomedical field. Commonly, MNPs act as a reinforcing material for the polymer matrix. In the present review, several methods, such as co-precipitation, polyol, hydrothermal, microemulsion, and sol-gel methods, are reported to synthesize magnetite nanoparticles with controllable physical and chemical properties that suit the required application. Due to the potential of magnetite-based nanocomposites, specifically in hydrogels, processing methods, including physical blending, in situ precipitation, and grafting methods, are introduced. Moreover, the most common characterization techniques employed to study MNPs and magnetic gel are discussed.

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Dehydrogenation of propane over sugar foams templated Ga2O3 nanoparticles catalysts

Peng

et al. 2020

Catal Lett

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Highly active Ga 2 O 3 nanoparticles catalysts were prepared by one-step oxidative decomposition of gallium nitrate with sucrose-derived carbon foams (SCF) template. The catalysts were investigated by XRD, Ar physisorption, SEM-EDS, HRTEM, TGA, NH 3 -TPD and 71 Ga MAS NMR. The addition of sucrose facilitated the higher surface area of Ga 2 O 3 nanoparticles and morphological transformation from bulk to flake due to the structure-directing role of the sucrose solution. Moreover, the weak-medium surface acid sites increased by adding sucrose properly, which was related to the larger number of tetrahedral Ga 3+ cations. The optimum catalytic activity was achieved over S X CF-Ga 2 O 3 catalysts at the sucrose/Ga 2 O 3 molar ratio of 6 with the propane conversion of 46.63% and propene selectivity of 88.18%.

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Selective synthesis and characterization of iron oxide nanoparticles via PVA/PVP polymer blend as structure-directing agent

Cited by 18 publications

References 31 publications

Efficient Dye Degradation and Antimicrobial Behavior with Molecular Docking Performance of Silver and Polyvinylpyrrolidone-Doped Zn-Fe Layered Double Hydroxide

Efficient Dye Degradation and Antimicrobial Behavior with Molecular Docking Performance of Silver and Polyvinylpyrrolidone-Doped Zn-Fe Layered Double Hydroxide

Polymeric Composite of Magnetite Iron Oxide Nanoparticles and Their Application in Biomedicine: A Review

Dehydrogenation of propane over sugar foams templated Ga2O3 nanoparticles catalysts

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