Exploring the therapeutic potential of Hibiscus rosa sinensis synthesized cobalt oxide (Co3O4-NPs) and magnesium oxide nanoparticles (MgO-NPs)

Kainat, .; Khan, Muhammad Aslam; Ali, Farhad; Faisal, Shah; Rizwan, Muhammad; Hussain, Zahid; Zaman, Nasib; Afsheen, Zobia; Uddin, Muhammad Nazir; Bibi, Nadia

doi:10.1016/j.sjbs.2021.05.035

Cited by 80 publications

(24 citation statements)

References 57 publications

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“…The probability analysis of C. pipiens larval mortality using the nanoparticles was illustrated in Figure 6 b [ 34 ]. These results are consistent with Kainat et al (2021) [ 35 ], who reported that Co 3 O 4 nanoparticles have larvicidal potential for Aedes aegypti with 67.2 ± 1.7% mortality at 400 ppm compared with MgO NPs of 49.2 ± 8.1% mortality at the same concentration. The impact of cobalt oxide nanoparticles on the treated larvae is a shape-dependent activity.…”

Section: Resultssupporting

confidence: 92%

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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Section: Resultssupporting

confidence: 92%

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 same phenomenon was observed in the case of both the uncalcined and leaf extract; the only difference is the slight shift in the location of the peaks. This again confirms that the extract has played a great role to prevent the overgrowth of Co 3 O 4 NPs during the synthesis process [ 33 – 35 ]. It is possible to elucidate the formation of Co 3 O 4 NPs with many surface hydroxyl function groups.…”

Section: Resultssupporting

confidence: 58%

“…While, the prominent levels of absorption peak located at around 2911 cm −1 reveal the presence of C-H stretching vibrations of an aromatic aldehyde. The peak observed around 2322 cm −1 represents the amide (C ≡ N) functional groups [ 33 ]. The medium absorption peak observed at 1638 cm −1 corresponds to C = O peak, which indicates the ketone functional group and also the ammine functional group.…”

Section: Resultsmentioning

confidence: 99%

[Retracted] Solanum tuberosum Leaf Extract Templated Synthesis of Co3O4 Nanoparticles for Electrochemical Sensor and Antibacterial Applications

Bekele

Murthy

Muniswamy³

et al. 2022

Bioinorganic Chemistry and Applications

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Green synthesis of metal oxide nanoparticles (NPs) is a viable alternative methodology because of cost-effective and availability of environmentally friendly templates for desired application, which has attracted the attention of researchers in recent years. In the present study, Co3O4 NPs were synthesized in various volume ratios in the presence of Solanum tuberosum leaf extract as a template. The synthesized Co3O4 NPs were characterized by X-ray diffraction (XRD), scanning electron microscopy-energy dispersive X-ray spectroscopy (SEM-EDX), transmission electron microscopy (TEM), high resolution transmission electron microscopy (HRTEM), surface area electron diffraction (SAED), UV-Vis diffuse reflectance spectroscopy (UV-DRS), and Fourier transform infrared (FTIR) spectroscopy. XRD analysis found that the average crystalline sizes for the 1 : 2, 1 : 1, and 2 : 1 volume ratios was 25.83, 21.05, and 27.98 nm, respectively. SEM-EDX and TEM analyses suggest that the green-synthesized Co3O4 NPs are spherical in shape without the presence of impurities. The band gap E g values of the 1 : 2, 1 : 1, and 2 : 1 volume ratios of Co3O4 NPs were found to be 1.83, 1.77, and 2.19 eV, respectively. FTIR analysis confirmed the presence of various bioactive ingredients within the leaf extract of Solanum tuberosum. Co3O4 NPs-modified electrodes showed better sensing capability towards ascorbic acid and citric acid due to enhanced electron transfer kinetics. Among three volume ratios (1 : 2, 1 : 1, and 2 : 1) of Co3O4 nanoelectrodes, 1 : 1 and 2 : 1 were identified as the best performing nanoelectrodes. This is possibly due to the high catalytic behavior and the more homogenized surface structure. Co3O4 (1 : 2) nanodrug showed the enhanced antibacterial activity (16 mm) towards S. aureus which is attributed to the formation of enhanced reactive oxygen species (ROS).

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“…(3) MgO NPs are formed following the calcination of magnesium tannic acid complexes at a high temperature of 400 • C. It is widely accepted that plants synthesise MgO NPs through these mechanisms. Biosynthesis of MgO NPs by the reaction of 3 g magnesium sulphate and 50 mL Hibiscus rosa-sinensis leaf extract was introduced by Khan and co-workers [85]. Moreover, Abdallah et al [87] investigated the antibacterial properties of NPs and the synthesis of MgO nanoflowers using rosemary extract without the intervention of chemical catalysts.…”

Section: Bio-templates-mediated Synthesis Strategies 21 Plant Extractsmentioning

confidence: 99%

Green Synthesis of Magnesium Oxide Nanoparticles and Nanocomposites for Photocatalytic Antimicrobial, Antibiofilm and Antifungal Applications

Farani

Farsadrooh

Zare³

et al. 2023

Catalysts

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Magnesium oxide nanoparticles (MgO NPs) have emerged as potential materials for various biomedical applications due to their unique physicochemical properties, including biodegradability, biocompatibility, cationic capacity, high stability and redox properties. MgO NPs have become an attractive platform to combat microbes and may be a promising alternative to overcome challenges associated with eliminating microbial biofilms and antibiotic resistance. Hence, due to the increasing use of MgO NPs in biomedicine, new synthetic strategies for MgO NPs are necessary. MgO NPs synthesised using green methods are non-toxic, eco-friendly and have high stability for a wide range of biological, medical and catalytic applications. This review presents the recent advances in biosynthesis strategies of MgO NPs by diverse bio-templates, such as plant, bacterial, fungal and algal extracts. Its photocatalytic properties show a suitable inhibitory function against pathogenic agents, such as microbial proliferation, biofilm formation and fungal growth. Furthermore, MgO NPs and relevant nanocomposites are comprehensively discussed regarding the mechanisms of their effect on microbes, biofilms and fungal strains, as well as challenges and future perspectives.

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Exploring the therapeutic potential of Hibiscus rosa sinensis synthesized cobalt oxide (Co3O4-NPs) and magnesium oxide nanoparticles (MgO-NPs)

Abstract: Graphical abstract

Cited by 80 publications

References 57 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

[Retracted] Solanum tuberosum Leaf Extract Templated Synthesis of Co3O4 Nanoparticles for Electrochemical Sensor and Antibacterial Applications

Green Synthesis of Magnesium Oxide Nanoparticles and Nanocomposites for Photocatalytic Antimicrobial, Antibiofilm and Antifungal Applications

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