High-energy ball milling technique for ZnO nanoparticles as antibacterial material

Salah, Numan; Habib, Sami S.; Khan, Zishan H.; Memić, Adnan; Azam, Ameer; Al-Arfaj, E.A.; Zahed, N Z; Al-Hamedi, Salim

doi:10.2147/ijn.s18267

Cited by 223 publications

(130 citation statements)

References 45 publications

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“…In other words, a balance between the striking force causing friction on the particles, and the material resistance, is achieved at a particle size of around 20 nm. Similar results on obtaining ultrafine, well-shaped nanoparticles were also reported earlier [31].…”

Section: Methodssupporting

confidence: 89%

Carbon rich fly ash and their nanostructures

Salah¹,

S²,

H³

et al. 2016

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Carbon rich fly ash was recently reported to have compositions that are ideal for use as a precursor and catalyst for carbon nanotube growth. This fly ash powder is mostly composed of pure carbon, predominantly present as sp 2 . In this work, the effect of sonication time on the morphology and structural properties of carbon rich fly ash particles is reported. The obtained results show that ultrasound treatment is an effective tool for producing ultrafine particles/fragments with higher porosity, which might be suitable for the adsorption of gasses. Moreover, carbon nanoparticles (CNPs) of this fly ash were produced in parallel using the ball milling technique, and were evaluated as reinforcements for epoxy based composites. These CNPs have almost spherical shapes with particle sizes of around 30 nm. They were found to have strong C=O carbonyl group bonds, which might be generated during the ball milling process. The tensile testing results of a fly ash CNP reinforced epoxy composite showed significant improvements in the mechanical properties, mainly in the stiffness of the polymer. The stiffness value was increased by around 23% of that of neat epoxy. These CNPs with chemically active groups might also be useful for other applications.

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Section: Methodssupporting

confidence: 89%

Carbon rich fly ash and their nanostructures

Salah¹,

S²,

H³

et al. 2016

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“…22 Furthermore, previous studies have shown that the smaller the ZnO particle size, the greater the efficacy in inhibiting the growth of bacteria, involving both the production of reactive oxygen species and the accumulation of nanoparticles. 7,10,23 However, nanoparticles of ZnO were previously reported to act both as bactericidal agents 24 and bacteriostatic agents, 25 perhaps thereby limiting their biomedical use.…”

Section: Morphological Analysismentioning

confidence: 99%

Antimicrobial activity of metal oxide nanoparticles against Gram-positive and Gram-negative bacteria: a comparative study

Azam¹,

Ahmed²,

Oves³

et al. 2012

IJN

1,193

564

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Background: Nanomaterials have unique properties compared to their bulk counterparts. For this reason, nanotechnology has attracted a great deal of attention from the scientific community. Metal oxide nanomaterials like ZnO and CuO have been used industrially for several purposes, including cosmetics, paints, plastics, and textiles. A common feature that these nanoparticles exhibit is their antimicrobial behavior against pathogenic bacteria. In this report, we demonstrate the antimicrobial activity of ZnO, CuO, and Fe 2 O 3 nanoparticles against Gram-positive and Gram-negative bacteria. Methods and results: Nanosized particles of three metal oxides (ZnO, CuO, and Fe 2 O 3 ) were synthesized by a sol-gel combustion route and characterized by X-ray diffraction, Fourier-transform infrared spectroscopy, and transmission electron microscopy techniques. X-ray diffraction results confirmed the single-phase formation of all three nanomaterials. The particle sizes were observed to be 18, 22, and 28 nm for ZnO, CuO, and Fe 2 O 3 , respectively. We used these nanomaterials to evaluate their antibacterial activity against both Gram-negative (Escherichia coli and Pseudomonas aeruginosa) and Gram-positive (Staphylococcus aureus and Bacillus subtilis) bacteria. Conclusion: Among the three metal oxide nanomaterials, ZnO showed greatest antimicrobial activity against both Gram-positive and Gram-negative bacteria used in this study. It was observed that ZnO nanoparticles have excellent bactericidal potential, while Fe 2 O 3 nanoparticles exhibited the least bactericidal activity. The order of antibacterial activity was demonstrated to be the following: ZnO . CuO . Fe 2 O 3 .

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“…ZnO nanostructures have vast applications such as dye sensitized solar cells, field effect transistors, targeted drug delivery, anticancer agents, and antibacterial activity. [4][5][6][7][8] Recently, it has been reported that the doping of ZnO nanostructures with other elements can enhance its various properties. 9 Commonly, different elements as a dopant in ZnO can be categorized into two groups: one group can substitute for zinc (Zn) and the second group for oxygen (O).…”

Section: Introductionmentioning

confidence: 99%

Sn doping induced enhancement in the activity of ZnO nanostructures against antibiotic resistant S. aureus bacteria

Jan

Iqbal

Ismail³

et al. 2013

IJN

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Highly ionic metal oxide nanostructures are attractive, not only for their physiochemical properties but also for antibacterial activity. Zinc oxide (ZnO) nanostructures are known to have inhibitory activity against many pathogens but very little is known about doping effects on it. The antibacterial activity of undoped ZnO and tin (Sn) doped ZnO nanostructures synthesized by a simple, versatile, and wet chemical technique have been investigated against Escherichia coli, methicillin-resistant Staphylococcus aureus, and Pseudomonas aeruginosa bacterial strains. It has been interestingly observed that Sn doping enhanced the inhibitory activity of ZnO against S. aureus more efficiently than the other two bacterial strains. From cytotoxicity and reactive oxygen species (ROS) production studies it is found that Sn doping concentration in ZnO does not alter the cytotoxicity and ROS production very much. It has also been observed that undoped and Sn doped ZnO nanostructures are biosafe and biocompatible materials towards SH-SY5Y Cells. The observed behavior of ZnO nanostructures with Sn doping is a new way to prevent bacterial infections of S. aureus, especially on skin, when using these nanostructures in creams or lotions in addition to their sunscreen property as an ultraviolet filter. Structural investigations have confirmed the formation of a single phase wurtzite structure of ZnO. The morphology of ZnO nanostructures is found to vary from spherical to rod shaped as a function of Sn doping. The excitation absorption peak of ZnO is observed to have a blue shift, with Sn doping leading toward a significant tuning in band gap.

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High-energy ball milling technique for ZnO nanoparticles as antibacterial material

Cited by 223 publications

References 45 publications

Carbon rich fly ash and their nanostructures

Carbon rich fly ash and their nanostructures

Antimicrobial activity of metal oxide nanoparticles against Gram-positive and Gram-negative bacteria: a comparative study

Sn doping induced enhancement in the activity of ZnO nanostructures against antibiotic resistant S. aureus bacteria

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