scholarly journals The Influence of Zinc Oxide with Carbon Nanotube Composite NanoMaterials on Antibacterial Activity

2021 ◽  
Vol 2114 (1) ◽  
pp. 012089
Author(s):  
M. F. A. Alias ◽  
A.S. Abd – Alsada
Keyword(s):  
Antibacterial Activity ◽  
Pulsed Laser ◽  
Pulsed Laser Ablation ◽  
Composite Nanomaterials ◽  
Composite Nanomaterial ◽  
Mwcnt Concentration ◽  
Different Types ◽  
Prepared Composite ◽  
Carbon Nanotube Composite ◽  
Composite Samples

Abstract A novel hybrid substance, ZnO: MWCNT, are fabricated from prepared pellets using a pulsed laser ablation liquid technique at varied MWCNT concentrations (0, 3, 5, 10, and 15) wt%. The study cast at the effect of MWCNT concentration on the structure of prepared samples using FTIR and tested for different types of antimicrobial activity. From FTIR examination, one can observe that all the prepared ZnO: MWCNT samples with different concentrations have different types of band (stretching and bending). All the prepared composite samples with various concentrations have showed influence on different types of bacterial, however in general the annealing ZnO, MWCNT and the composite nanomaterial with 15%MWCNT have higher zone of antibacterial activity for studying types of bacterial inhibition.

scholarly journals Antibacterial activity of zinc oxide nanoparticles obtained by pulsed laser ablation in water and air

2018 ◽  
Vol 243 ◽  
pp. 00017 ◽  
Author(s):  
Daria Goncharova ◽  
Ekaterina Gavrilenko ◽  
Anna Nemoykina ◽  
Valery Svetlichnyi
Keyword(s):  
Electron Microscopy ◽  
Scanning Electron Microscopy ◽  
Antibacterial Activity ◽  
Laser Ablation ◽  
Zno Nanoparticles ◽  
Antibacterial Properties ◽  
Pulsed Laser ◽  
Pulsed Laser Ablation ◽  
Composition And Structure ◽  
Scanning Electron

The paper studies physicochemical and antibacterial properties of ZnO nanoparticles obtained by pulsed laser ablation in water and air. Their composition and structure were studied by X-ray diffraction, transmission and scanning electron microscopy. Antibacterial activity of the nanoparticles was examined by its affection on Gram-positive Staphylococcus aureus (S.aureus). The dependence of nanoparticles’ physical and chemical antibacterial properties on the conditions of the ablation was shown. The model materials for the antibacterial bandage were made of cotton, filter paper and biodegradable polymer scaffolds (poly-l-lactide acid), and then they were coated with the obtained ZnO nanoparticles. The model bandage materials were examined by the scanning electron microscopy method and their antibacterial activity (ISO 20743:2013) was determined. High activity of all the samples against S.aureus was proved.

ZnO nanoparticles obtained by pulsed laser ablation and their composite with cotton fabric: Preparation and study of antibacterial activity

2016 ◽  
Vol 372 ◽  
pp. 20-29 ◽  
Author(s):  
Valery Svetlichnyi ◽  
Anastasiia Shabalina ◽  
Ivan Lapin ◽  
Daria Goncharova ◽  
Anna Nemoykina
Keyword(s):  
Antibacterial Activity ◽  
Laser Ablation ◽  
Cotton Fabric ◽  
Zno Nanoparticles ◽  
Pulsed Laser ◽  
Pulsed Laser Ablation

The influence of Pt and SrTiO3 interlayers on the microstructure of PbTiO3 thin films deposited by laser ablation on (001) MgO

1995 ◽  
Vol 10 (4) ◽  
pp. 791-794 ◽  
Author(s):  
S. Stemmer ◽  
S.K. Streiffer ◽  
W-Y. Hsu ◽  
F. Ernst ◽  
R. Raj ◽  
...  
Keyword(s):  
Electron Microscopy ◽  
Transmission Electron Microscopy ◽  
Laser Ablation ◽  
Volume Fraction ◽  
Pulsed Laser ◽  
Pulsed Laser Ablation ◽  
Transmission Electron ◽  
Electrical Conductivities ◽  
Different Types ◽  
Oriented Material

We have used conventional and high-resolution transmission electron microscopy to investigate the microstruture of epitaxial, ferroelectric PbTiO3 films grown by pulsed laser ablation on (001) MgO single crystals, and on MgO covered with epitaxial Pt or SrTiO3. Pronounced variations are found in the widths and lengths of a-axis-oriented domains in these films, although the volume fraction of a-axis-oriented material varies only weakly for the different types of samples. In addition, the films deposited onto Pt-coated MgO have a larger grain size than those deposited onto bare MgO or SrTiO3/MgO. Possible reasons for the variations in the distribution of a-axis-oriented material in these samples include differences in the elastic properties and electrical conductivities of the different substrate combinations.

Enhanced antibacterial activity of copper/copper oxide nanowires prepared by pulsed laser ablation in water medium

2016 ◽  
Vol 122 (7) ◽  
Author(s):  
R. K. Swarnkar ◽  
J. K. Pandey ◽  
K. K. Soumya ◽  
P. Dwivedi ◽  
S. Sundaram ◽  
...  
Keyword(s):  
Antibacterial Activity ◽  
Laser Ablation ◽  
Copper Oxide ◽  
Pulsed Laser ◽  
Pulsed Laser Ablation ◽  
Water Medium ◽  
Oxide Nanowires

Generation of NiO nanoparticles via pulsed laser ablation in deionised water and their antibacterial activity

2017 ◽  
Vol 123 (3) ◽  
Author(s):  
Khawla S. Khashan ◽  
Ghassan M. Sulaiman ◽  
Abubaker H. Hamad ◽  
Farah A. Abdulameer ◽  
Assel Hadi
Keyword(s):  
Antibacterial Activity ◽  
Laser Ablation ◽  
Pulsed Laser ◽  
Pulsed Laser Ablation ◽  
Nio Nanoparticles

scholarly journals Antibacterial activity of silver nanoparticles obtained by pulsed laser ablation in pure water and in chloride solution

2016 ◽  
Vol 7 ◽  
pp. 465-473 ◽  
Author(s):  
Brunella Perito ◽  
Emilia Giorgetti ◽  
Paolo Marsili ◽  
Maurizio Muniz-Miranda
Keyword(s):  
Silver Nanoparticles ◽  
Antibacterial Activity ◽  
Laser Ablation ◽  
Active Sites ◽  
Colloidal Stability ◽  
Pure Water ◽  
Pulsed Laser ◽  
Pulsed Laser Ablation ◽  
Surface Reactivity ◽  
Laser Ablation In Liquid

Silver nanoparticles (AgNPs) have increasingly gained importance as antibacterial agents with applications in several fields due to their strong, broad-range antimicrobial properties. AgNP synthesis by pulsed laser ablation in liquid (PLAL) permits the preparation of stable Ag colloids in pure solvents without capping or stabilizing agents, producing AgNPs more suitable for biomedical applications than those prepared with common, wet chemical preparation techniques. To date, only a few investigations into the antimicrobial effect of AgNPs produced by PLAL have been performed. These have mainly been performed by ablation in water with nanosecond pulse widths. We previously observed a strong surface-enhanced Raman scattering (SERS) signal from such AgNPs by “activating” the NP surface by the addition of a small quantity of LiCl to the colloid. Such surface effects could also influence the antimicrobial activity of the NPs. Their activity, on the other hand, could also be affected by other parameters linked to the ablation conditions, such as the pulse width. The antibacterial activity of AgNPs was evaluated for NPs obtained either by nanosecond (ns) or picosecond (ps) PLAL using a 1064 nm ablation wavelength, in pure water or in LiCl aqueous solution, withEscherichia coliandBacillus subtilisas references for Gram-negative and Gram-positive bacteria, respectively. In all cases, AgNPs with an average diameter less than 10 nm were obtained, which has been shown in previous works to be the most effective size for bactericidal activity. The measured zeta-potential values were very negative, indicating excellent long-term colloidal stability. Antibacterial activity was observed against both microorganisms for the four AgNP formulations, but the ps-ablated nanoparticles were shown to more effectively inhibit the growth of both microorganisms. Moreover, LiCl modified AgNPs were the most effective, showing minimum inhibitory concentration (MIC) values in a restricted range of 1.0–3.7 µg/mL. An explanation is proposed for this result based on the increased surface reactivity of the metal surface due to the presence of positively charged active sites.

Increased Antibacterial Activity by Photoactivation of Composites Based on ZnO Nanoparticles

2020 ◽  
Vol 312 ◽  
pp. 303-308
Author(s):  
Darya A. Goncharova ◽  
Sergei A. Kulinich ◽  
Anna L. Nemoykina ◽  
Valery A. Svetlichnyi
Keyword(s):  
Antibacterial Activity ◽  
Active Component ◽  
Pulsed Laser ◽  
Pulsed Laser Ablation ◽  
Visible Spectroscopy ◽  
Bacteriostatic Effect ◽  
Zno Nps ◽  
High Antibacterial Activity ◽  
Uv Visible ◽  
Scanning Electron

Antibacterial composites based on linen and NPs obtained by pulsed laser ablation of a zinc target in air were synthesized at various concentrations of the active component (ZnO NPs). The surface morphology and optical properties of ZnO/linen composites were investigated by scanning electron microscopy and UV-visible spectroscopy. The antibacterial activity of ZnO/linen composites was tested on S.aureus in accordance with ISO 20743:2013. It was found that the antibacterial activity depends on the concentration of ZnO NPs. High antibacterial activity of the composites was achieved when the concentration of the active component was of 0.25 mg/cm2. At a concentration of 0.1 mg/cm2 the composites showed only a bacteriostatic effect. The use of photoactivation of composites by LED radiation of 365 nm for 10 min led to an increase in antibacterial activity about 1.5 times for the samples in both concentrations.

Sign in / Sign up

Export Citation Format

Share Document