Calcium oxide(CaO) nanomaterial (Kukutanda twak Bhasma) from egg shell: Green synthesis, physical properties and antimicrobial behaviour

Sinha, Susmita; Aman, Abhay Kr.; Singh, Rakesh K.; Kr, Nishant; Shivani, K S

doi:10.1016/j.matpr.2020.09.072

Cited by 13 publications

(9 citation statements)

References 6 publications

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“…The catalytic activity of CaO was enhanced by unsaturated surface sites, and photoluminescence spectra are formed by unsaturated sites on the CaO surface. 54 Surface unsaturated sites with the coordination number <5 was exhibited by the lower energy region. 55 In low coordination states, surface absorption bands connected with electronic transitions in surface oxygen ions display low PL energy excitation.…”

Section: Resultsmentioning

confidence: 99%

Enhanced Photocatalytic Degradation with Sustainable CaO Nanorods Doped with Ce and Cellulose Nanocrystals: In Silico Molecular Docking Studies

et al. 2022

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This research work intends to evaluate the photoactivity of calcium oxide (CaO) nanorods (NRs) doped with cellulose nanocrystals (CNCs) and cerium (Ce). CNC-doped CaO and Ce/CNC codoped CaO were synthesized via the sol–gel technique. Structural, optical, morphological, physiochemical, phase constitution, and functional group evaluations were performed. The photodegradation of the prepared nanostructures was analyzed by observing photodegradation of a mixture of methylene blue and ciprofloxacin dye under light irradiation. The photocatalytic activity of the dye was drastically enhanced upon codoping in CaO. For both Escherichia coli and Staphylococcus aureus , statistically significant inhibitory zones ( p < 0.05) were achieved in the case of CNCs and pristine and codoped CaO. Furthermore, in silico molecular docking studies (MDS) were accomplished against DNA gyrase from nucleic acid biosynthesis and enoyl-[acyl-carrier-protein] reductase (FabI) from the fatty acid biosynthetic pathway to rationalize the possible mechanism behind these antibacterial activities.

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Section: Resultsmentioning

confidence: 99%

Enhanced Photocatalytic Degradation with Sustainable CaO Nanorods Doped with Ce and Cellulose Nanocrystals: In Silico Molecular Docking Studies

et al. 2022

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“…In addition, controlled size, infiltration into cell and tissue, hindered aggregation by coating, precise contact, and easy dispersion give calcium oxide nanoparticles an advantage over other metal nanoparticles. They are also involved in storage systems due to their excellent porosity, biocompatibility, and bioactive nature help in gene transfection and drug delivery [10].…”

Section: Introductionmentioning

confidence: 99%

Cellular Investigations on Mechanistic Biocompatibility of Green Synthesized Calcium Oxide Nanoparticles with Danio rerio

Eram

Kumari

Panda

et al. 2021

JNT

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The utility of calcium oxide nanoparticles in the biomedical and physical fields has instigated their biocompatible synthesis and production. Moreover, it is important to investigate their biocompatibility at the molecular level for biomedical and ecotoxicological concern. This study explores the green synthesis of calcium oxide nanoparticles (CaONP) using Crescentia cujete leaf extract. The synthesized CaONP were found to have a size of 62 ± 06 nm and a hydrodynamic diameter of 246 ± 12 nm, as determined by FE-SEM and dynamic light scattering (DLS). CaONP was stable in fish medium with a zeta potential of −23 ± 11 mV. The biocompatibility of the CaONP was investigated with adult zebrafish bearing an LC50 of 86.32 µg/mL. Cellular and molecular investigation revealed the mechanism of biocompatibility as a consequence of elicited reactive oxygen species leading to apoptosis, due to accumulation and internalization of CaONP in exposed zebrafish. The study provided detailed information about the mechanistic biocompatibility and a defined horizon of green synthesis of CaONP for biomedical and ecological purposes.

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“…The sample was subjected to air humidity, resulting in the Ca(OH) 2 phase. 27 The characteristics peak of CS appeared at 15.2° (110), which confirms successful doping in CaO NPs. 28 XRD patterns of La 2% exhibit the same generation of peaks due to the low La content.…”

Section: Resultsmentioning

confidence: 77%

“…The emission peak of CaO NPs was located at 405 nm, which might originate from the charge recombination and intrinsic defects. 27 Meanwhile, the CS/CaO emission peak was observed at 411 nm in the PL spectra. Afterward, upon La doping, the position of UV emission bands increased (405 to 415 nm) compared to the pristine sample.…”

Section: Resultsmentioning

confidence: 98%

Facile Synthesis of La- and Chitosan-Doped CaO Nanoparticles and Their Evaluation for Catalytic and Antimicrobial Potential with Molecular Docking Studies

et al. 2022

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In the current study, a low-cost and straightforward coprecipitation technique was adopted to synthesize CaO and La-doped CS/CaO NPs. Different weight ratios (2 and 4) of La were doped into fixed amounts of CS and CaO. Synthesized samples exhibited outstanding catalytic performance by degrading methylene blue (MB) in a highly efficient manner. The X-ray diffraction technique detected the presence of a cubic phase of CaO and a decrease in crystallite size of the samples with the addition of La. Fourier transform infrared spectroscopy confirmed the presence of the dopant and the base material with functional groups at 712 cm –1 . A decrease in the absorption intensity of doped CaO was observed with an increasing amount of dopants La and CS accompanied by a blueshift leading to an increase in the band gap energy from 4.17 to 4.42 eV, as recorded with an ultraviolet–visible spectrophotometer. The presence of dopants (La and CS) and the evaluation of the elemental constitution of Ca and O were supported with the energy-dispersive spectroscopy technique. In an acidic medium, the catalytic activity against the MB dye was reduced (93.8%) for 4% La-doped CS/CaO. For La-doped CS/CaO, vast inhibition domains ranged within 4.15–4.70 and 5.82–8.05 mm against Escherichia coli while 4.15–5.20 and 6.65–13.10 mm against Staphylococcus aureus ( S. aureus ) at the least and maximum concentrations, correspondingly. In silico molecular docking studies suggested these nanocomposites of chitosan as possible inhibitors against the enoyl-acyl carrier protein reductase (FabI) from S. aureus .

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Calcium oxide(CaO) nanomaterial (Kukutanda twak Bhasma) from egg shell: Green synthesis, physical properties and antimicrobial behaviour

Cited by 13 publications

References 6 publications

Enhanced Photocatalytic Degradation with Sustainable CaO Nanorods Doped with Ce and Cellulose Nanocrystals: In Silico Molecular Docking Studies

Enhanced Photocatalytic Degradation with Sustainable CaO Nanorods Doped with Ce and Cellulose Nanocrystals: In Silico Molecular Docking Studies

Cellular Investigations on Mechanistic Biocompatibility of Green Synthesized Calcium Oxide Nanoparticles with Danio rerio

Facile Synthesis of La- and Chitosan-Doped CaO Nanoparticles and Their Evaluation for Catalytic and Antimicrobial Potential with Molecular Docking Studies

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