Publications by authors named "Howida A Fetouh"

For mitigating the wide spread antibiotic-resistant bacteria. This study aims: Simple synthesis of new series of coordination metal complexes: Cu(II), Co(II), Sm(III), Gd(III) and Tb(III) from the prepared Schiff base bis-hydrazones ligands I-VIII (derivatives of glyoxal, biacetyl and benzyl-hydroxybenzaldhyde and methoxysalicaldhyde). Structural features derived from elemental analysis (empirical formula), melting point (purity), nuclear magnetic resonance (H, C) spectra and mass spectra.

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This study-involved novelty of high power new aluminum (Al) fuel cell in 0.1 M HCl (less corrosive and strong conductive electrolyte instead of the aggressive alkali). The performance of aluminum (Al) anode enhanced by using antimony sulphate Sb(SO) salt effective poison (in acidic solution) the parasitic hydrogen evolution reaction (HER).

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New insulin drug delivery systems (IDDs): insulin@chitin; insulin@chitin-grafted (g)-guar gum were prepared by using a modified sol-gel method. Insulin vials were loaded on the safe natural inert bioactive polymers (chitin and chitin-g-GG copolymer) carriers using water green solvent. Traces amount additives were below toxicity limits.

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Article Synopsis
  • The study focused on creating and testing Cobalt-doped zinc oxide nanoparticles as a photocatalyst for degrading the antibiotic ciprofloxacin (CIPF) under visible LED light.
  • It was found that 10% Cobalt-doped ZnO nanoparticles were the most effective, achieving over 99% degradation of CIPF in just 90 minutes, and maintained their efficiency across three cycles of use.
  • The research also optimized the conditions for maximum degradation efficiency using statistical methods and simulated data using Artificial Neural Networks, achieving a strong correlation for the model’s accuracy.
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This study involved synthesis of a novel antibacterial heterocyclic compound, sodium 2-(2-(3-phenyl-1, 2, 4-oxadiazol-5-yl) phenoxy) acetate abbreviated as Na-POPA. Further development of a biocompatible, pH-responsive hydrogel drug carrier prepared utilizing the natural polymers gelatin and sodium alginate. The compound loaded on the hydrogel represented new drug delivery system.

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Article Synopsis
  • * The synthesis involves adjusting parameters like pH during co-precipitation and hydrothermal time, which leads to a unique flower-like microstructure for the oxides.
  • * The electrochemical tests showed that the oxides have a maximum specific capacitance of 525.5 F/g, with optimal performance achieved at a pH of 9 and longer hydrothermal times improving surface area and performance.
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In this research, different Co doped ZnO nanoparticles (NPs) were hydrothermally synthesized by an environmentally friendly, sustainable technique using the extract of P. capillacea for the first time. Co-ZnO was characterized and confirmed by FTIR, XPS, XRD, BET, EDX, SEM, TEM, DRS UV-Vis spectroscopy, and TGA analyses.

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Photodegradation is considered a significant method engaged for the elimination of organic pollutants from water. In this work, hydrothermal cobalt-doped zinc oxide nanoparticles (Hy-Co-ZnO NPs) loaded with 5, 10, and 15% cobalt were prepared in a hydrothermal way and were investigated as a photocatalyst for the Ciprofloxacin (CIPF) degradation under visible irradiation using LED-light. Characterization approaches such as FTIR, XRD, XPS, DRS UV-vis spectroscopy, SEM, TEM, BET, EDX and TGA were used for the investigation of the fabricated Hy-Co-ZnO NPs.

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From the perspective of environmental protection, the highly efficient degradation of antibiotics and organic dyes in wastewater needs to be tackled as soon as possible. In this study, an ecofriendly and green cube-shaped cobalt-doped zinc oxide nanoparticles (Co-ZnO NPs) photocatalyst using Pterocladia Capillacea (P. Capillacea) water extract loaded with 5, 10, and 15% cobalt ions were formed via co-precipitation process to degrade antibiotics.

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