“…The blue coloration increases with the increase in the concentration of the NPs is indicative of the fact that the DNA damage was increased at the higher concentrations of NiO and Mo doped NiO NPs (100 and 200 µg/mL). The results demonstrated that the DNA damage is the concentration dependent parameter 38 . Figure 12 Fluorescence images represented the DAPI staining of bacteria which indicated the increased DNA damage with respect to increase the concentration of NiO NPs and Mo doped NiO ranges from 5 to 200 µg/mL.…”
Section: Resultsmentioning
confidence: 89%
“…The blue coloration increases with the increase in the concentration of the NPs is indicative of the fact that the DNA damage was increased at the higher concentrations of NiO and Mo doped NiO NPs (100 and 200 µg/mL). The results demonstrated that the DNA damage is the concentration dependent parameter 38 .…”
Section: Antibacterial Mechanism Of Nio and Mo Doped Nio The Antibact...mentioning
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.
“…The blue coloration increases with the increase in the concentration of the NPs is indicative of the fact that the DNA damage was increased at the higher concentrations of NiO and Mo doped NiO NPs (100 and 200 µg/mL). The results demonstrated that the DNA damage is the concentration dependent parameter 38 . Figure 12 Fluorescence images represented the DAPI staining of bacteria which indicated the increased DNA damage with respect to increase the concentration of NiO NPs and Mo doped NiO ranges from 5 to 200 µg/mL.…”
Section: Resultsmentioning
confidence: 89%
“…The blue coloration increases with the increase in the concentration of the NPs is indicative of the fact that the DNA damage was increased at the higher concentrations of NiO and Mo doped NiO NPs (100 and 200 µg/mL). The results demonstrated that the DNA damage is the concentration dependent parameter 38 .…”
Section: Antibacterial Mechanism Of Nio and Mo Doped Nio The Antibact...mentioning
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.
“…39 The unique features of ZnO NPs, such as their antibacterial activity against highly resistant strains, ease of synthesis, low toxicity, and control of bacterial biofilm formation, have made ZnO NPs a trustworthy antibacterial candidate. The antibacterial activities of ZnO NPs in their pure [40][41][42][43][44][45][46] and doped forms 41,43,[47][48][49][50] have been studied and reported. The antibacterial activities of un-doped ZnO NPs and SiO 2 -doped ZnO NPs were tested against both Grampositive and Gram-negative bacteria.…”
ZnO NPs synthesised by simple basic precipitation coupled with time bound aging showed enhanced antibacterial activity against Gram-positive and -negative bacterias. This new approach could be useful to enhance antibacterial activity of metal oxides.
“…Photocatalysis, sensing, optoelectronics, and plasmonics are a few of the potential applications of these materials [13]. TMO nanoparticles (NPs) have recently gained prominence as prospective candidates for a range of scientific applications, including biological applications [14,15], smart materials [16], superconductors [17], radiation shielding [18], and many more. Oxide-based semiconductors, however, are preferred over others owing to their unique properties such as (1) capability for absorbing light, (2) having a long lifespan in an excited state, (3) transferring charge, and (4) having electronic structures.…”
In the present study, WO3 nanoparticles (NPs) synthesised via starch-assisted co-precipitation approach and crystal violet (CV) dye was selected as a model pollutant to examine the photocatalytic efficiency of synthesised samples. The XRD of samples verified monoclinic phase with a crystallite size of 24 and 32 nm for starch-assisted WO3 (WS1) and without starch WO3 (WS0) NPs, respectively. SEM and FESEM analysed the morphology of synthesised samples and the average particle size of 108 nm is obtained for WS1. The bandgap value of WS1 has been calculated to be about 2.69 eV. According to obtained result, about 97% of CV dye degrades in the presence of WS1 under sunlight after 150 min with a rate constant of 0.01532 min−1.
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