Deposition of silver nanoparticles on multiwalled carbon nanotubes by chemical reduction process and their antimicrobial effects

Haider, Adawiya J.; Thamir, Amin D.; Ahmed, Duha S.; Mohammad, M. R.

doi:10.1063/1.4959399

Cited by 28 publications

(10 citation statements)

References 19 publications

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“…In contrast, these results reveal that the F-MWCNTs have good physical stability due to the high electrostatic aversion in polar solvents such as ethanol. The study is similar to the previous literature reported by Haider J et al [25]. Sayanti B et al [26], and Ahmed D et al [27].…”

Section: Resultssupporting

confidence: 92%

Characterization of Treated Multi-Walled Carbon Nanotubes and Antibacterial Properties

Ali¹,

Taha²,

Ahmed³

2021

JASN

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In the present study, the synthesized Multi-Walled Carbon Nanotubes (MWCNTs) were chemically treated with a mixture of acids to produce functionalized MWNTs. The functionalized MWCNTs were characterized by X-Ray Diffraction Analysis (XRD), Zeta potential and Field-Emission Scanning Electron Microscopy (FE-SEM). The X-ray diffraction reveals the MWCNTs average crystal size of the R-MWCNTs and F-MWCNTs were about (3.27 and 3.19) nm, respectively. FESEM images show the formation of R-MWCNTs that appears as cylindrical tubes and aggregated tubes with each other, while the F-MWCNTs appear as less aggregated and tangled clusters than R-MWCNTs. Zeta potential measurements showed that the measurement of the R-MWCNT shows a low negative value -9 mV and F-MWCNT, it was found that the zeta potential value is up to -29 mV. The antibacterial activity was studied against E. coli and P. aeruginosa bacteria, and indicated the highest growth inhibition zones (IZ) of F-MWCNTs as compared with R-MWCNTs against E. coli and Pseudomonas aeruginosa, respectively.

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Section: Resultssupporting

confidence: 92%

Characterization of Treated Multi-Walled Carbon Nanotubes and Antibacterial Properties

Ali¹,

Taha²,

Ahmed³

2021

JASN

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“…The presence of AgNPs was captured in the form of white spherical particles deposited on the thread-like f-MWCNT. The SEM images also show the conformity with other carbon nanotubes SEM characterization references [33,[42][43][44]. The existence of oxygen functional group and AgNPs were confirmed by the EDS spectrum result presented in Figure 2c and d and the component analysis in Tables 1 and 2.…”

Section: Synthesis and Characterization Of The F-mwcnt/ Agnp Nanocompositessupporting

confidence: 80%

“…The number of electrons released/captured will affect the current density value at the anodic/cathodic peak. Furthermore, Equation (6) shows that the tendency of DA analyte to carry out oxidation reaction causes the reduction of current density value of Ag þ cathodic peak [35,43].…”

Section: Sensing Performance Of F-mwcnt/agnp Nanocomposites Surface-modified Electrodementioning

confidence: 99%

Functionalized multi-walled carbon nanotube/silver nanoparticle (f-MWCNT/AgNP) nanocomposites as non-enzymatic electrochemical biosensors for dopamine detection

et al. 2021

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Dopamine (DA) is an important neurotransmitter in the kidney, cardiovascular system, and central nervous system, which abnormality is associated with many diseases. In this work, we synthesized a functionalized multi-walled carbon nanotube/silver nanoparticle (f-MWCNT/ AgNP) nanocomposites as the biosensing material to detect DA. The SEM, EDS, and TEM characterizations indicated the success of the functionalization process with MWCNT as the base material. The values of the linear range, the limit of detection (LOD), and the selectivity of the nanocomposite were all obtained from the Differential Pulse Voltammetry (DPV) measurements. The obtained LOD value was 0.2778 mM in the linear range of 0-8 mM, which is lower than the required concentration value for detecting DA in human urine (0.3-3 mM). The biosensor's high selectivity on DA with the presence of other human-related biofluids was also reported. These results show that f-MWCNT/AgNP nanocomposites are a promising biosensor material for the detection of DA.

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“…Alternatively, they inhibit biofilm formation by inhibiting the formation of external polysaccharides. The mechanism of inhibiting the biofilm formation process by using nanoparticles' is done through penetration of those particles into the water channels that serve to transport nutrients through a layer of polysaccharides [21][22][23]. Its small size helps it to penetrate the sugars layer and creates contact between it and the bacterial cells, thus inhibition of the biofilm formation process [24,25].…”

Section: Tissue Culture Plate Methods For Quantitative Detection Of Biofilm Formationmentioning

confidence: 99%

Evaluation of the Biosynthesized Silver Nanoparticles’’ Effects on Biofilm Formation

Hussein¹,

Khadum²

2021

JASN

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In this study 50 isolates were obtained from the Baghdad teaching city medicine laboratories, from wounds and burns. Isolates were identified exercise VITEK 2 system (Biomerieux). Streptococcus pyogenes isolate was used to create the biosynthesize of silver nanoparticles'' against some pathogenic microbes such as Pseudomonas aeruginosa, Staphylococcus aureus, Escherichia coli, and Candida albicans. Evaluation of the effect of the created biosynthesis silver nanoparticles'' (AgNPs) by Streptococcus pyogenes on the biofilm formation by various human pathogenic bacteria. Biosynthesis of AgNPs was characterized by ultraviolet-visible absorption spectroscopy, the observation of color change of the experimental samples in the presence of 1 mM AgNO3 at 410 nm. A color change from pale yellow to slightly brown occurred for bacterial supernatant within 24 hours of incubation in the presence of light Scanning electron microscope (SEM), the biosynthesis silver nanoparticles'' are predominately circular fit as a fiddle having a smooth surface and very much scattered with close minimal game plan, X-ray diffraction (XRD). The. The normal molecule size was determined by Debye-Scherer equation and its evaluation was roughly 6.43nm. The normal molecule size was determined by Debye-Scherer equation and its evaluation was roughly 6.43nm. The importance of this work lies in the possibility of synthesizing the silver nanoparticles'' using these bacteria, which are considered as types of fastidious bacteria. As far as the researcher's knowledge is concerned, this is study is the first of its kind in Iraq.

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Deposition of silver nanoparticles on multiwalled carbon nanotubes by chemical reduction process and their antimicrobial effects

Cited by 28 publications

References 19 publications

Characterization of Treated Multi-Walled Carbon Nanotubes and Antibacterial Properties

Characterization of Treated Multi-Walled Carbon Nanotubes and Antibacterial Properties

Functionalized multi-walled carbon nanotube/silver nanoparticle (f-MWCNT/AgNP) nanocomposites as non-enzymatic electrochemical biosensors for dopamine detection

Evaluation of the Biosynthesized Silver Nanoparticles’’ Effects on Biofilm Formation

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