Sol–gel grown Fe-doped ZnO nanoparticles: antibacterial and structural behaviors

Khatir, Nadia Mahmoudi; Abdul‐Malek, Zulkurnain; Zak, A. Khorsand; Akbari, Abolghasem; Sabbagh, Farzaneh

doi:10.1007/s10971-015-3922-y

Cited by 59 publications

(23 citation statements)

References 37 publications

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“…In another work, the attention was focused on the antibacterial activity of Fe-doped ZnO nanoparticles obtained by a sol-gel method. Zinc nitrate hexahydrate, iron nitrate nonahydrate and gelatin were dissolved in distilled water and the resulting nanoparticles showed a dimension of approximately 20-30 nm [ 182 ]. This study reported a reduced 2θ angle of the (101) diffraction peaks together with a general decrease of the intensity of the wurtzite diffraction peaks by increasing the amount of Fe doping, which is attributed to an increased disorder of the ZnO lattice after Fe doping.…”

Section: Synthesis Methods and Characterizationmentioning

confidence: 99%

Doped Zinc Oxide Nanoparticles: Synthesis, Characterization and Potential Use in Nanomedicine

et al. 2020

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Smart nanoparticles for medical applications have gathered considerable attention due to an improved biocompatibility and multifunctional properties useful in several applications, including advanced drug delivery systems, nanotheranostics and in vivo imaging. Among nanomaterials, zinc oxide nanoparticles (ZnO NPs) were deeply investigated due to their peculiar physical and chemical properties. The large surface to volume ratio, coupled with a reduced size, antimicrobial activity, photocatalytic and semiconducting properties, allowed the use of ZnO NPs as anticancer drugs in new generation physical therapies, nanoantibiotics and osteoinductive agents for bone tissue regeneration. However, ZnO NPs also show a limited stability in biological environments and unpredictable cytotoxic effects thereof. To overcome the abovementioned limitations and further extend the use of ZnO NPs in nanomedicine, doping seems to represent a promising solution. This review covers the main achievements in the use of doped ZnO NPs for nanomedicine applications. Sol-gel, as well as hydrothermal and combustion methods are largely employed to prepare ZnO NPs doped with rare earth and transition metal elements. For both dopant typologies, biomedical applications were demonstrated, such as enhanced antimicrobial activities and contrast imaging properties, along with an improved biocompatibility and stability of the colloidal ZnO NPs in biological media. The obtained results confirm that the doping of ZnO NPs represents a valuable tool to improve the corresponding biomedical properties with respect to the undoped counterpart, and also suggest that a new application of ZnO NPs in nanomedicine can be envisioned.

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Section: Synthesis Methods and Characterizationmentioning

confidence: 99%

Doped Zinc Oxide Nanoparticles: Synthesis, Characterization and Potential Use in Nanomedicine

et al. 2020

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“…The mechanism for the ZnO formation at different biosynthetic pH should present similar steps [27], as the rst reaction was related to the solubility of the zinc precursor (Zn(NO 3 ) 2 ), precipitate (Zn(OH) 2 ) core development, and the stability for crystal growth in the presence of a capping agent substitution. Furthermore, Fig.…”

Section: Analysis Of Fourier Transform Infra Red (Ft-ir)mentioning

confidence: 99%

“…Several intracellular enzymes, including catalase, lyase, transferase, oxidoreductase, hydrolase, isomerase, and ligase, have the amino acids cysteine, tyrosine, and tryptophan, which also possesses Nterminals within the polypeptide structure functioning as stabilizers. The mechanism of ZnO biosynthesis based on the intracellular structure of A. niger cell biomass is shown in the reaction cycle [27,28].…”

Section: Introductionmentioning

confidence: 99%

Biosynthesis of Zinc Oxide (ZnO) Using Culture Biomass of Aspergillus Niger :The Influence of pH On Textile Morphology And Antimicrobial Activity

Rilda

Rinaldi

Syukri

et al. 2021

Preprint

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The biosynthesis of zinc oxide (ZnO) is performed through enzymatic mechanisms, by controlling the particle size and morphology of the compound using the sol-gel method. Furthermore, this method utilizes stabilizer obtained from the cell biomass of Aspergillus niger bacteria, in order to yield homogeneous and consistent products, which corresponds with the XRD outcome that exhibits good crystallinity. The evaluation of functional, morphological, and antibacterial activities was carried out at pH 6.0-13.0, as the prepared samples were characterized by FT-IR. The analysis showed the interaction of hydroxyl groups, aromatic rings, as well as N-H and O-Zn-O compounds at a wavenumber of 401-584 cm−1. The XRD and SEM characterizations showed that the structure and crystal phase of ZnO were hexagonal wurtzite at dimensions of 36.2 - 45.4 nm. The differences in pH also influenced the dimensions, morphology, and antimicrobial activity. ZnO with pH of 8.0 was characterized by FESEM-EDAX, based on the analysis of morphological uniformity. This characterization obtained rod and cube structures, with atomic ratios of Zn = 61.5% and O = 38.5%. The UV-DRS spectrum showed that the optical band gap was not significantly influenced by the pH of the reactant solution, with a value of Eg = 3.00–3.11 eV. The differences in morphology further distinguished anti-bacterial properties on textile fibres, through the use of the Gram-negative and positive bacteria (Pseudomonas aeruginosa and Staphylococcus aureus), with inhibition zones of 17-21 mm and 21-25 mm, respectively. Therefore, ZnO is classified as a very strong antibacterial material compared to amoxicillin, with an inhibition zone of 13.6 mm.

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“…A transparent, viscous, and honey-like gel was obtained due to continuously stirring of the solution for 7 h at 80 • C. Lastly, for the calcination process, a small amount of provided gel was rubbed on the internal walls of an alumina crucible before being placed into the 600 • C furnace. The heating rate was 5 • C/min and the heating operation was for 2 h [17].…”

Section: Particles Preparation and Characterizationmentioning

confidence: 99%

“…The morphology of nanoparticles was evaluated using field emission scanning electron microscopy (FESEM). For FESEM, gold-coated nanoparticles were mounted under vacuum, on a holder, and then assessed in a LEO 1450 VP SEM (20 kV, Ramsey, NJ, USA) [17].…”

Section: Morphology Of Nanoparticlesmentioning

confidence: 99%

Green Synthesis of Mg0.99 Zn0.01O Nanoparticles for the Fabrication of κ-Carrageenan/NaCMC Hydrogel in order to Deliver Catechin

et al. 2020

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Currently, the role of the nanoparticles in the structure of the composites and their benefits for the health of the body is valuable. In this study, the effects of the doping on the structural and morphological properties of the hydrogels using a Mg co-doped ZnO hydrogel, which has been fabricated by the sol-gel process, have been investigated. Then, a hydrogel containing nanoparticle and a hydrogel without any nanoparticles was produced as a control. The hydrogels were loaded with catechin and the related characterization was evolved based on the new structure of the matrices. The Mg 0.99 Zn 0.01 O nanoparticles were synthesized using a green synthesis method. To investigate the properties of the nanoparticles, zeta potential and XRD were studied. The field emission scanning electron microscopy (FESEM), FTIR, TGA, swelling Ratio, and compression tests were investigated for the hydrogels. Based on the results, FESEM showed a more compressed structure for hydrogels including nanoparticles rather than the hydrogels without a nanoparticle. The TGA showed a higher decomposition temperature in the hydrogels including nanoparticles. The swelling ratio of hydrogels containing a nanoparticle was higher than the control hydrogel. κ-Carrageenan/ Mg 0.99 Zn 0.01 O/NaCMC/Catechin had the highest swelling ratio (44.15%) rather than the κ-Carrageenan/NaCMC (33.22%). Mg 0.99 Zn 0.01 O nanoparticles presented a stronger structure of hydrogels in the compression test. It is concluded that the role of the synthesized nanoparticle is critical in the structure of the hydrogel.Polymers 2020, 12, 861 2 of 15 property of inhibiting free radicals and acts as a biological antioxidant [4]. Biological properties of tea like the antioxidant, antimicrobial, anti-cancer, and anti-mutagenic properties are related to catechins. They naturally have demonstrated potential in both treatment and prevention and a wide range of diseases including cardiovascular diseases, Parkinson's disease, cancer, diabetes, osteoporosis, and Alzheimer's disease [5]. In addition to the direct effects of antioxidants of catechins, they can indirectly increase the body's androgenic antioxidants [6]. In a research study, mice who received the extracted green tea have shown the increased levels of intrinsic antioxidants such as glutathione peroxidase, reductase, superoxide dismutase, and catalase [7].Nanoparticles are particles smaller than 100 nm in diameter [8]. Nanomaterials can easily cross cellular barriers compared to larger particles and move to a cell or organ due to their special properties [9]. Pure hydrogels have a low mechanical strength. To optimize the thermal, mechanical, optical, and chemical properties of hydrogels, it is necessary to use-nanoparticle-loaded hydrogels. Nanoparticle-loaded hydrogels present many benefits in drug delivery such as improvement of bioavailability and efficacy and safety of the drugs (catechin) by providing targeted delivery of drugs, and or extending drug in the target tissue. Based on the methodology of nanoparticles prepa...

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Sol–gel grown Fe-doped ZnO nanoparticles: antibacterial and structural behaviors

Cited by 59 publications

References 37 publications

Doped Zinc Oxide Nanoparticles: Synthesis, Characterization and Potential Use in Nanomedicine

Doped Zinc Oxide Nanoparticles: Synthesis, Characterization and Potential Use in Nanomedicine

Biosynthesis of Zinc Oxide (ZnO) Using Culture Biomass of Aspergillus Niger :The Influence of pH On Textile Morphology And Antimicrobial Activity

Green Synthesis of Mg0.99 Zn0.01O Nanoparticles for the Fabrication of κ-Carrageenan/NaCMC Hydrogel in order to Deliver Catechin

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