Facile synthesis of ZnO and Co3O4 nanoparticles by thermal decomposition of novel Schiff base complexes: Studying biological and catalytic properties

Al-Wasidi, Asma S.; AlZahrani, Ibtisam I. S.; Thawibaraka, Hotoun I.; Naglah, Ahmed M.

doi:10.1016/j.arabjc.2021.103628

Cited by 8 publications

(3 citation statements)

References 41 publications

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“…The energy gap

is an important parameter which identifies the optical characteristics and the type of electron transition. The energy gap of the fabricated thin film was estimated from Tauc’s formula, defined as [ 30 ]:

where, h

is the incident optical energy, A is the optical absorbance, and

is the optical absorption coefficient expressed as [ 32 , 33 ]:

t is the thickness of the film. The

of Co 3 O 4 was evaluated by extending the straight line part of

curve on the Y-axis to the energy on X-axis at

( Figure 5 b) exhibiting allowed direct transitions at 2.92 and 3.08 eV.…”

Section: Resultsmentioning

confidence: 99%

“…The

of Co 3 O 4 was evaluated by extending the straight line part of

curve on the Y-axis to the energy on X-axis at

( Figure 5 b) exhibiting allowed direct transitions at 2.92 and 3.08 eV. The photon energy greater than the band gap means that more electrons transfer from to the conduction band and increase of free charge carriers [ 32 , 33 ].…”

Section: Resultsmentioning

confidence: 99%

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Comparative Study of Larvicidal Activity of Spinel Co3O4 Nanorods and Entomopathogenic Metarhizium brunneum Conidia against Culex pipiens

et al. 2022

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Herein, we report the synthesis of spinel cobalt oxide nanorods (Co3O4 NRs) by a modified co-precipitation approach and examine their larvicidal activity against Culex pipiens. The structure and morphology of the as-prepared Co3O4 NRs were emphasized using X-ray diffraction (XRD), Raman spectroscopy, energy dispersive X-ray spectroscopy (EDAX), scanning electron microscopy (SEM), and transmission electron microscopy (TEM). It was found that Co3O4 nanostructures have a face-centered spinel cubic crystal structure with a mean crystallite size of 38 nm. These nanostructures have a rod like shape with a mean diameter of 30 nm and an average length of 60 nm. The TGA measurements revealed the high stability of the formed spinel cubic structure at 400 °C. The optical behavior indicates the direct transition of electrons through an optical band gap in the range of 2.92 eV–3.08 eV. These unique chemical and physical properties of Co3O4 NRs enabled them to be employed as a strong agent for killing the C. pipiens. A comparison study was employed between the as-prepared Co3O4 and the entomopathogenic fungus Metarhizium brunneum as a control agent of C. pipiens larvae. The results revealed that the as-prepared nanorods have higher mortality against C. pipiens larvae compared with the well-known M. brunneum.

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“…The energy gap

where, h

is the incident optical energy, A is the optical absorbance, and

is the optical absorption coefficient expressed as [ 32 , 33 ]:

t is the thickness of the film. The

of Co 3 O 4 was evaluated by extending the straight line part of

curve on the Y-axis to the energy on X-axis at

( Figure 5 b) exhibiting allowed direct transitions at 2.92 and 3.08 eV.…”

Section: Resultsmentioning

confidence: 99%

“…The

of Co 3 O 4 was evaluated by extending the straight line part of

curve on the Y-axis to the energy on X-axis at

Section: Resultsmentioning

confidence: 99%

Comparative Study of Larvicidal Activity of Spinel Co3O4 Nanorods and Entomopathogenic Metarhizium brunneum Conidia against Culex pipiens

et al. 2022

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“…The preparation of Co 3 O 4 nanomaterials has been studied in the field of resistance to PA. For example, Arsalan et al thought that Co 3 O 4 nanoparticles could be used as candidate materials against PA 135 . But Al‐Wasidi et al synthesized a new type of zinc (II) and cobalt (II) Schiff base complex by a template method and prepared Co 3 O 4 particles by the thermal decomposition method, which had a weak inhibitory effect on PA 136 . Therefore, Co 3 O 4 nanocomposites have been extensively researched for their antibacterial properties, while cobalt oxide nanocomposites have been studied for their resistance to PA. For example, Mobeen et al prepared cobalt molybdate (β‐CoMoO4) and cobalt oxide (Co 3 O 4 ) nanocomposites by the coprecipitation method and solid‐state method 137 .…”

Section: Therapeutic Strategy Based On Mnps and Monpsmentioning

confidence: 99%

Therapeutic strategies for drug‐resistant Pseudomonas aeruginosa: Metal and metal oxide nanoparticles

Zhan,

Hu,

et al. 2024

J Biomedical Materials Res

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Pseudomonas aeruginosa (PA) is a widely prevalent opportunistic pathogen. Multiple resistant strains of PA have emerged from excessive or inappropriate use of antibiotics, making their eradication increasingly difficult. Therefore, the search for highly efficient and secure novel antimicrobial agents is crucial. According to reports, there is an increasing exploration of nanometals for antibacterial purposes. The antibacterial mechanisms involving the nanomaterials themselves, the release of ions, and the induced oxidative stress causing leakage and damage to biomolecules are widely accepted. Additionally, the study of the cytotoxicity of metal nanoparticles is crucial for their antibacterial applications. This article summarizes the types of metal nanomaterials and metal oxide nanomaterials that can be used against PA, their respective unique antibacterial mechanisms, cytotoxicity, and efforts made to improve antibacterial performance and reduce toxicity, including combination therapy with other materials and antibiotics, as well as green synthesis approaches.

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Facile Synthesis of ZSM-5/TiO2/Ni Novel Nanocomposite for the Efficient Photocatalytic Degradation of Methylene Blue Dye

Al-Wasidi

Saad

AlReshaidan

et al. 2022

J Inorg Organomet Polym

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Facile synthesis of ZnO and Co3O4 nanoparticles by thermal decomposition of novel Schiff base complexes: Studying biological and catalytic properties

Cited by 8 publications

References 41 publications

Comparative Study of Larvicidal Activity of Spinel Co3O4 Nanorods and Entomopathogenic Metarhizium brunneum Conidia against Culex pipiens

Comparative Study of Larvicidal Activity of Spinel Co3O4 Nanorods and Entomopathogenic Metarhizium brunneum Conidia against Culex pipiens

Therapeutic strategies for drug‐resistant Pseudomonas aeruginosa: Metal and metal oxide nanoparticles

Facile Synthesis of ZSM-5/TiO2/Ni Novel Nanocomposite for the Efficient Photocatalytic Degradation of Methylene Blue Dye

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