ZnO nanofluids – A potential antibacterial agent

Zhang, Lingling; Ding, Yulong; Povey, M. J. W.; York, David

doi:10.1016/j.pnsc.2008.01.026

Cited by 448 publications

(250 citation statements)

References 17 publications

Supporting

Mentioning

241

Contrasting

Unclassified

Order By: Relevance

“…In addition to ZnO photocatalyst, (BiO) 2 CO 3 and Graphitic carbon nitride based nanocomposites also acts as good photocatalysts [4][5][6]. ZnO Nps also shows very good antibacterial activity [7] and as a catalyst for biodiesel production [8]. Pure ZnO shows ntype conductivity, but doping changes to p-type conductivity and modifies the optical and electronic properties of the ZnO, which in turn influence the photocatalytic activity and other related applications [9][10][11].Lot of research groups used doped and undoped ZnO Nps as photo catalyst for the degradation of organic dye.…”

Section: Introductionmentioning

confidence: 99%

Electrochemical heavy metal detection, photocatalytic, photoluminescence, biodiesel production and antibacterial activities of Ag–ZnO nanomaterial

Nagaraju

Udayabhanu

Shivaraj

et al. 2017

Materials Research Bulletin

370

104

View full text Add to dashboard Cite

Section: Introductionmentioning

confidence: 99%

Electrochemical heavy metal detection, photocatalytic, photoluminescence, biodiesel production and antibacterial activities of Ag–ZnO nanomaterial

Nagaraju

Udayabhanu

Shivaraj

et al. 2017

Materials Research Bulletin

370

104

View full text Add to dashboard Cite

“…Moreover, the electrostatic attraction between negatively charged bacterial cells and positively charged particles is crucial for the activity of nanoparticles bactericidal materials. This interaction not only inhibits the bacterial growth but also induces the reactive oxygen species (ROS) generation, which leads to cell death [21][22][23]. The antimicrobial activity of zinc oxide nanoparticles have been studied against Gram-negative bacteria such as Pseudomonas aeruginosa, campylobacter jejuni, Escherichia coli and Gram-positive bacteria such as Bacillus subtillis and Staphylococcus aureus [24].…”

Section: Introductionmentioning

confidence: 99%

Synthesis and Characterizations of Zinc Oxide Nanoparticles for Antibacterial Applications

Getie¹,

Belay²,

Ar³

et al. 2017

J Nanomed Nanotechnol

View full text Add to dashboard Cite

In this study various shapes and sizes of the wurtzite structure of ZnO nanoparticles were synthesised via a wet chemical method for antibacterial applications. The synthesised ZnO NPs were also modified using biologically active compound, caffeine. The ZnO nanoparticles were investigated by XRD, SEM, FTIR, UV-Vis and Fluorescence spectroscopy. The average crystallite size of the ZnO NPs using XRD was within the ranges of 28.09-31.86 nm. The shape of ZnO NPs synthesised from Zn (NO 3 ) 2 .6H 2 O, ZnCl 2 and Zn (CH 3 COO) 2 .2H 2 O grain, spherical and rod-like respectively. The variations in size and shape of ZnO NPs are due to the difference in precursors and calcinations temperature. The absorption peak of the ZnO NPs was observed at 278 nm, 374 nm and 378 nm for ZnCl 2 , Zn (NO 3 ) 2 .6H 2 O and Zn (CH 3 COO) 2 .2H 2 O respectively. The FTIR peaks due to vibrational phonons of ZnO NPs also confirm the successful production of ZnO nanoparticles. The emission spectra of ZnO NPs were observed in ultraviolet due to the electronic transition from conduction band edge to valence band, and visible emission band due to defects that are related to deep level emissions. The synthesised ZnO NPs were applied for antibacterial activity against S. aureus and E. coli bacteria using agar disc diffusion method. All the three ZnO Nps performed better antibacterial activity than the standard antibiotics and also S. aureus was shown to be more sensitive to ZnO NPs than E. coli.

show abstract

“…Thus the particle size of ZnO affected the antibacterial activity but not antifungal activity. Particle size and shape of ZnO have been reported previously to affect its antibacterial activity 39 . The antibacterial activity of ZnO increased with the smaller particle size.…”

Section: Resultsmentioning

confidence: 99%

“…These results show that adding of 20%w/w NMP into the Lutrol F127 systems containing ZnO does not enhance the antimicrobial activity of these systems, but increasing the amount ZnO does. The antibacterial behaviours of ZnO nanofluids against E. coli bacteria shows that the number of the bacterial colonies dropped by increasing ZnO particles 39 . The 20%w/w Lutrol F127 gels containing various amount doxycycline hyclate with or without 20%w/w NMP were tested their antimicrobial activity against S. aureus, E. coli, and C. albicans using the agar diffusion method (Fig.…”

Section: Resultsmentioning

confidence: 99%

Untitled

Phaechamud¹,

Mahadlek²,

Aroonrerk³

et al. 2012

ScienceAsia

View full text Add to dashboard Cite

Zinc oxide (ZnO) is a prototype of micro-and nanomaterials widely studied in different fields due to many promising new applications. Various zinc oxides (typical, micronized, powder, tetrapod I, and tetrapod II ZnO) have been characterized using SEM. The particle size of zinc oxides was analysed using laser light diffraction spectroscopy. Effects of types and amounts of ZnO on the antimicrobial activity were evaluated using Staphylococcus aureus, Escherichia coli, and Candida albicans as standard microbes. Lutrol F127 systems comprising ZnO and doxycycline hyclate were developed. Cytotoxicity of test samples and gel was investigated on human gingival fibroblast and macrophage cell line U937. Particle size analysis revealed that micronized ZnO was smaller than ZnO powder, ZnO BP, tetrapod I, or II zinc oxides. The particle size of tetrapod zinc oxides was larger than the others since they exhibited an arm structure configuration. The antibacterial activity depended on the particle size of ZnO, whereas the antifungal activity was less affected by the particle size. Increasing ZnO in the doxycycline hyclate-Lutrol F127 systems decreased the inhibition zone diameters against all test microbes investigated with agar diffusion method because it retarded drug diffusion. This effect could prolong the doxycycline hyclate release. N-methyl-2-pyrrolidone could enhance the antifungal activity of doxycycline hyclate thermosensitive gel. The developed system could inhibit bacteria in the oral cavity. All 10 mg/ml test samples were not toxic to human gingival fibroblast or macrophage cell line, however Lutrol F127 and doxycycline hyclate showed a slight effect but no significant difference from that of the control group. Therefore, ZnO combined with doxycycline hyclate could prolong the inhibition of microbes in the form of thermosensitive gel to use in localized periodontitis therapy.

show abstract

ZnO nanofluids – A potential antibacterial agent

Cited by 448 publications

References 17 publications

Electrochemical heavy metal detection, photocatalytic, photoluminescence, biodiesel production and antibacterial activities of Ag–ZnO nanomaterial

Electrochemical heavy metal detection, photocatalytic, photoluminescence, biodiesel production and antibacterial activities of Ag–ZnO nanomaterial

Synthesis and Characterizations of Zinc Oxide Nanoparticles for Antibacterial Applications

Untitled

Contact Info

Product

Resources

About