Defect dependent antioxidant activity of nanostructured nickel oxide synthesized through a novel chemical method

Madhu, Gaurav; Bose, Vipin C.; Aiswaryaraj, A.S.; Maniammal, K.; Biju, Vasudevanpillai

doi:10.1016/j.colsurfa.2013.03.055

Cited by 40 publications

(22 citation statements)

References 25 publications

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“…The average particle size obtained from the histogram is in satisfactory agreement with that estimated from the X-ray line broadening result and the value was calculated to be 19.5 nm. 48 fringes for the (111) planes of NiO. The d-spacing value for (111) plane is 2.42 A which is in good agreement with other reported results.…”

Section: Resultssupporting

confidence: 92%

“…This distortion associated with holes establishes small polaron in the localized 3d band of Ni 2+ . 48,[65][66][67] Those small polarons conduct at temperatures above 100 K employing thermally activated polarons. 65,68,69 On the other hand, when O 2À ion transfers a 2p electron, a hole is formed in the 2p band of O 2À which creates a large polaron associated with lattice distortion.…”

Section: Resultsmentioning

confidence: 99%

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Large magnetodielectric effect and negative magnetoresistance in NiO nanoparticles at room temperature

Chatterjee

Maiti²,

Chakravorty

2020

RSC Adv.

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Section: Resultssupporting

confidence: 92%

Section: Resultsmentioning

confidence: 99%

Large magnetodielectric effect and negative magnetoresistance in NiO nanoparticles at room temperature

Chatterjee

Maiti²,

Chakravorty

2020

RSC Adv.

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“…Previous researchers have considered chemically synthesized nickel oxide nanoparticles as novel antioxidant because of their free radical scavenging potential [43]. The role of defects in the free radical scavenging ability of chemically synthesized nano-nickel oxide is also established [43,44]. This study also confirms free radical scavenging potential for the bioinspired nickel oxide nanoparticles.…”

Section: Antioxidant Activitiessupporting

confidence: 66%

Sageretia thea (Osbeck.) modulated biosynthesis of NiO nanoparticles and their in vitro pharmacognostic, antioxidant and cytotoxic potential

Khalil

Ovais

Ullah

et al. 2017

Artificial Cells, Nanomedicine, and Biotechnology

175

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NiO nanoparticles are biosynthesized using Sageretia thea (Osbeck.) aqueous leave extracts and their biological activities are reported. Nanoparticles (∼18 nm) were characterized through XRD, ATR-FTIR, EDS, SAED, HR-SEM/TEM and Raman spectroscopy. Antibacterial activity was investigated against six pathogenic bacterial strains (gram positive and gram negative) and their corresponding minimum inhibitory concentrations (MICs) were calculated. UV-exposed nanoparticles were investigated to have reduced MICs relative to the NiO nanoparticles have not been exposed to UV. Moderate linear fungal growth inhibition was observed while Mucor racemosus (percentage inhibition 64% ± 2.30) was found to be most susceptible. Cytotoxicity was confirmed using brine shrimps lethality assay (IC 42.60 μg/ml). MTT cytotoxicity was performed against Leishmania tropica-KWH23 promastigotes and amastigotes revealed significant percentage inhibition across the applied concentrations. IC values were calculated as 24.13 μg/ml and 26.74 μg/ml for the promastigote and amastigote cultures of Leishmania tropica. NiO nanoparticles were found. Moderate, antioxidant potential was concluded through assays like DPPH, TAP and TAC. Furthermore, protein kinase inhibition and alpha amylase inhibition is also reported.

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“…The DPPH assay was performed according to the method of Madhu (2013) with some slight changes [51]. The standard curve was linear between 0 and 200 mM Trolox (R 2 = 0.9998).…”

Section: In Vitro Phenolic Compounds Release Studies and Antioxidant mentioning

confidence: 99%

Valorization of Gleditsia triacanthos Invasive Plant Cellulose Microfibers and Phenolic Compounds for Obtaining Multi-Functional Wound Dressings with Antimicrobial and Antioxidant Properties

Marinaș

Oprea

Geană

et al. 2020

IJMS

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Gleditsia triacanthos is an aggressive invasive species in Eastern Europe, producing a significant number of pods that could represent an inexhaustible resource of raw material for various applications. The aim of this study was to extract cellulose from the Gleditsia triacanthos pods, characterize it by spectrophotometric and UHPLC–DAD-ESI/MS analysis, and use it to fabricate a wound dressing that is multi-functionalized with phenolic compounds extracted from the leaves of the same species. The obtained cellulose microfibers (CM) were functionalized, lyophilized, and characterized by ATR-FTIR and SEM. The water absorption and retention capacity as well as the controlled release of phenolic compounds with antioxidant properties evaluated in temporal dynamics were also determined. The antimicrobial activity against reference and clinical multi-drug-resistant Escherichia coli, Staphylococcus aureus, Pseudomonas aeruginosa, Acinetobacter baumannii, Enterobacter cloacae, Candida albicans, and Candida parapsilosis strains occurred immediately after the contact with the tested materials and was maintained for 24 h for all tested microbial strains. In conclusion, the multi-functionalized cellulose microfibers (MFCM) obtained from the reproductive organs of an invasive species can represent a promising alternative for the development of functional wound dressings with antioxidant and antimicrobial activity, as well as being a scalable example for designing cost-effective, circular bio-economy approaches to combat the accelerated spread of invasive species.

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Defect dependent antioxidant activity of nanostructured nickel oxide synthesized through a novel chemical method

Cited by 40 publications

References 25 publications

Large magnetodielectric effect and negative magnetoresistance in NiO nanoparticles at room temperature

Large magnetodielectric effect and negative magnetoresistance in NiO nanoparticles at room temperature

Sageretia thea (Osbeck.) modulated biosynthesis of NiO nanoparticles and their in vitro pharmacognostic, antioxidant and cytotoxic potential

Valorization of Gleditsia triacanthos Invasive Plant Cellulose Microfibers and Phenolic Compounds for Obtaining Multi-Functional Wound Dressings with Antimicrobial and Antioxidant Properties

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