Physicochemical, Photocatalytic, Antibacterial, and Antioxidant Screening of Bergenia Ciliata Mediated Nickel Oxide Nanoparticles

Rehman, Fazal Ur; Mahmood, Rashid; Ali, Manel Ben; Hedfi, Amor; Mezni, Amine; Haq, Sirajul; Din, Salah Ud; Ehsan, Rimsha

doi:10.3390/cryst11091137

Cited by 13 publications

(5 citation statements)

References 29 publications

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“…The amount of reactive species is increased with SnO2 nanoparticles concentration, and therefore, the ability of sample to combat the reactive ABTS •+ free radical is also increased, increasing the radical scavenging capacity of SnO2 nanoparticles [29]. The calculated IC50 value is 213.64, which is closer to the value reported elsewhere [30].…”

Section: Antioxidant Propertysupporting

confidence: 79%

Bio-Synthesized Tin Oxide Nanoparticles: Structural, Optical, and Biological Studies

et al. 2022

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This research was planned to synthesize a biological potent nanomaterials via an eco-friendly process to combat the diseases causing bacteria and the free radicals generated inside the body. For this purpose, a green synthesis process was employed to prepare SnO2 nanoparticles by utilizing leaf extract of Populus ciliate, and they were characterized via different physico-chemical techniques. The crystallite size of SnO2 nanoparticles was found to be 58.5 nm. The calculated band gap energy of SnO2 nanoparticles was 3.36 eV. The SnO2 nanoparticles showed 38, 49, 57, and 72% antioxidant activity at concentrations of 100, 200, 300, and 400 L with 2,2′-azino-bis(3-ethylbenzothiazoline-6-sulfonicacid) (ABTS) assays. The antibacterial effects of prepared SnO2 nanoparticles were studied using the agar well diffusion method against Gram-positive bacteria (S. pyogene and S. aureus) and Gram-negative bacteria (K. pneumoniae and E. coli). Both the antioxidant activity and antibacterial activity were seen to increase with increasing the concentration of the nanoparticles.

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Section: Antioxidant Propertysupporting

confidence: 79%

Bio-Synthesized Tin Oxide Nanoparticles: Structural, Optical, and Biological Studies

et al. 2022

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“…The NiO NPs and Mo doped NiO NPs both exhibited the concentration-dependent DPPH activity. The Mo doped NiO NPs and NiO NPs both successfully scavenge the DPPH radical ions with the respective inhibition percentage of 61.6% and 45.4% at the higher concentrations of 200 µg/mL 33 . The Mo doped NiO exhibited greater DPPH activity than the NiO NPs.…”

Section: Resultsmentioning

confidence: 97%

Effect of Mo doping in NiO nanoparticles for structural modification and its efficiency for antioxidant, antibacterial applications

Alam

BaQais

Mir

et al. 2023

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Novel molybdenum (Mo)-doped nickel oxide (NiO) Nanoparticles (NPs) were synthesized by using a simple sonochemical methodology and the synthesized NPs were investigated for antioxidant, and antibacterial applications. The X-ray diffraction (XRD) analysis revealed that the crystal systems of rhombohedral (21.34 nm) and monoclinic (17.76 nm) were observed for pure NiO and Mo-doped NiO NPs respectively. The scanning electron microscopy (SEM) results show that the pure NiO NPs possess irregular spherical shape with an average particle size of 93.89 nm while the Mo-doped NiO NPs exhibit spherical morphology with an average particle size of 85.48 nm. The ultraviolet–visible (UV–Vis) spectrum further indicated that the pure and Mo-doped NiO NPs exhibited strong absorption band at the wavelengths of 365 and 349 nm, respectively. The free radical scavenging activity of NiO and Mo-doped NiO NPs was also investigated by utilizing several biochemical assays. The Mo-doped NiO NPs showed better antioxidant activity (84.2%) towards ABTS. + at 200 µg/mL in comparison to their pure counterpart which confirmed that not only antioxidant potency of the doped NPs was better than pure NPs but this efficacy was also concentration dependant as well. The NiO and Mo-doped NiO NPs were further evaluated for their antibacterial activity against gram-positive (Staphylococcus aureus and Bacillus subtilis) and gram-negative (Pseudomonas aeruginosa and Escherichia coli) bacterial strains. The Mo-doped NiO NPs displayed better antibacterial activity (25 mm) against E. coli in comparison to the pure NPs. The synthesized NPs exhibited excellent aptitude for multi-dimensional applications.

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“…The activity of the bimetallic Ag-CuO nanohybrids also can be speculated due to the slow release of Ag + and Cu 2+ in the culture media. These cations, lately, bind to cell-membrane bound proteins and rapture the membrane, resulting in severe leaks in cytoplasmic fluid and leading the bacteria death [ 42 , 43 ]. In another study, it has been shown that Ag@CuO significantly disturbs Gram-positive and Gram-negative bacterial growth and viability as compared to CuO alone due to ROS generation and excessive damage of the bacterial cell structure [ 44 ].…”

Section: Resultsmentioning

confidence: 99%

Hydrothermal Synthesis of Multifunctional Bimetallic Ag-CuO Nanohybrids and Their Antimicrobial, Antibiofilm and Antiproliferative Potential

2022

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The rapidly growing global problem of infectious pathogens acquiring resistance to conventional antibiotics is an instigating reason for researchers to continue the search for functional as well as broad-spectrum antimicrobials. Hence, we aimed in this study to synthesis silver–copper oxide (Ag-CuO) nanohybrids as a function of Ag concentration (0.05, 0.1, 0.3 and 0.5 g) via the one-step hydrothermal method. The bimetallic Ag-CuO nanohybrids Ag-C-1, Ag-C-2, Ag-C-3 and Ag-C-4 were characterized for their physico-chemical properties. The SEM results showed pleomorphic Ag-CuO crystals; however, the majority of the particles were found in spherical shape. TEM results showed that the Ag-CuO nanohybrids in formulations Ag-C-1 and Ag-C-3 were in the size range of 20–35 nm. Strong signals of Ag, Cu and O in the EDX spectra revealed that the as-synthesized nanostructures are bimetallic Ag-CuO nanohybrids. The obtained Ag-C-1, Ag-C-2, Ag-C-3 and Ag-C-4 nanohybrids have shown their MICs and MBCs against E. coli and C. albicans in the range of 4–12 mg/mL and 2–24 mg/mL, respectively. Furthermore, dose-dependent toxicity and apoptosis process stimulation in the cultured human colon cancer HCT-116 cells have proven the Ag-CuO nanohybrids as promising antiproliferative agents against mammalian cancer.

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Physicochemical, Photocatalytic, Antibacterial, and Antioxidant Screening of Bergenia Ciliata Mediated Nickel Oxide Nanoparticles

Cited by 13 publications

References 29 publications

Bio-Synthesized Tin Oxide Nanoparticles: Structural, Optical, and Biological Studies

Bio-Synthesized Tin Oxide Nanoparticles: Structural, Optical, and Biological Studies

Effect of Mo doping in NiO nanoparticles for structural modification and its efficiency for antioxidant, antibacterial applications

Hydrothermal Synthesis of Multifunctional Bimetallic Ag-CuO Nanohybrids and Their Antimicrobial, Antibiofilm and Antiproliferative Potential

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