“…Saraswathi et al (2017) presented the absorption spectrum of ZnO-NPs with strong absorption band at about 373 nm. Ali et al (2016) have reported the absorption peak of ZnO NP at 375 nm. According to Elumalai and Velmurugan (2015) the ZnO nanoparticles were characterized by a maximum absorbance peak at 370 nm.Fig.…”
The basic goal of this study was to synthesize zinc oxide nanoparticles using the Chelidonium majus extract and asses their cytotoxic and antimicrobial properties. The synthesized ZnO NPs were characterized by UV-Vis, Scanning Electron Microscopy (SEM) with EDS profile, Fourier Transform Infrared Spectroscopy (FTIR), X-ray diffraction (XRD), Transmission Electron Microscopy (TEM) and Atomic Force Microscopy (AFM). The aforementioned methods confirmed that the size of synthesized ZnO nanoparticles was at the range of 10 nm. The antimicrobial activity of ZnO nanoparticles synthesized using the Ch. majus extract was tested against standard strains of bacteria (Staphylococcus aureus NCTC 4163, Pseudomonas aeruginosa NCTC 6749, Escherichia coli ATCC 25922), yeast (Candida albicans ATCC 10231), filamentous fungi (molds: Aspergillus niger ATCC 16404, dermatophytes: Trichophyton rubrum ATCC 28188), clinical strains of bacteria (Escherichia coli, Pseudomonas aeruginosa, Staphylococcus aureus) and yeast (Candida albicans). The study showed that zinc oxide nanoparticles were excellent antimicrobial agents. What is more, biologically synthesized ZnO nanoparticles demonstrate high efficiency in treatment of human non-small cell lung cancer A549.
“…Saraswathi et al (2017) presented the absorption spectrum of ZnO-NPs with strong absorption band at about 373 nm. Ali et al (2016) have reported the absorption peak of ZnO NP at 375 nm. According to Elumalai and Velmurugan (2015) the ZnO nanoparticles were characterized by a maximum absorbance peak at 370 nm.Fig.…”
The basic goal of this study was to synthesize zinc oxide nanoparticles using the Chelidonium majus extract and asses their cytotoxic and antimicrobial properties. The synthesized ZnO NPs were characterized by UV-Vis, Scanning Electron Microscopy (SEM) with EDS profile, Fourier Transform Infrared Spectroscopy (FTIR), X-ray diffraction (XRD), Transmission Electron Microscopy (TEM) and Atomic Force Microscopy (AFM). The aforementioned methods confirmed that the size of synthesized ZnO nanoparticles was at the range of 10 nm. The antimicrobial activity of ZnO nanoparticles synthesized using the Ch. majus extract was tested against standard strains of bacteria (Staphylococcus aureus NCTC 4163, Pseudomonas aeruginosa NCTC 6749, Escherichia coli ATCC 25922), yeast (Candida albicans ATCC 10231), filamentous fungi (molds: Aspergillus niger ATCC 16404, dermatophytes: Trichophyton rubrum ATCC 28188), clinical strains of bacteria (Escherichia coli, Pseudomonas aeruginosa, Staphylococcus aureus) and yeast (Candida albicans). The study showed that zinc oxide nanoparticles were excellent antimicrobial agents. What is more, biologically synthesized ZnO nanoparticles demonstrate high efficiency in treatment of human non-small cell lung cancer A549.
“…In fact, these methods, when compared to the other protocols, yield ZnO NPs with well-dened size and morphology. [60][61][62][63][64][65][66][67] Although the methods of obtaining ZnO NPs from plant extracts appear to have notable advantages over the other ones, the true potentials of the latter sources have not been fully explored and revealed due to the lack of systematic research approach necessitating comprehensive research work in this direction. In light of these observations, for some time now, we have been working in this interesting domain.…”
An OFET-based CO gas sensor has been demonstrated where ZnO NPs realized by an inexpensive, environmentally friendly method have been employed as an active medium.
“…There are many reports that plant extracts / different parts of plant have been used for the synthesis of ZnO NPs, such as Trifolium pratense flower extract [21], Aloe vera leaf extracts [22], Rosa canina fruit extract [23], Physalis alkekengi L. seed extract [24], and Citrus aurantifolia (lemon) peel extract [25], C. aurantifolia [26], dried sap of shoots and roots of Astragalus gummifer [27], Hibiscus rosasinensis [28], leaf extract of Azadirachta indica [29], Leaf extract of Camellia sinensis [30], Zea mays leaf extract [31], aqueous extract of Abutilon indicum [32] and Dittrichia graveolens aqueous extract [33]. The synthesis of ZnO NPs was studied with the leaf extract of Ocimum tenuiflorum and was characterized by scanning electron microscopy (SEM), Fourier infrared transformation spectroscopy (FTIR) and X-ray diffraction (XRD).…”
Due to distinguishing characteristics of nanoparticles (NPs) in terms of size, shape, chemical composition, transmittal and different applications, nanotechnology is considered as an interesting domain of research. Application of metallic NPs is important because of the diminution of dimensions and thus the unique thermal, optical and electronic properties. This research attempts to explore the synthesis of zinc oxide NPs. Zinc oxide NPs have been synthesized using cherry extract under different pH, temperature and concentration and then optimum conditions for the synthesis of them were determined. For further investigations, UV-Vis spectroscopy, scanning electron microscopy (SEM), X-ray diffraction (XRD) and Fourier infrared transformation spectroscopy (FTIR) were used. The solution containing zinc oxide NPs showed a major absorbance of 378 nm which confirmed the synthesis of zinc oxide NPs, and spherical morphology of NPs was observed in SEM images. Zinc oxide NP sizes were 6.5 and 20.18 nm which are obtained by UV-Vis spectra and XRD spectrum, respectively. Also, based on the FTIR spectra of the extract obtained before and after the synthesis, the existence of the reducing agents in herbal extract was confirmed. According to this study, the biological synthesis of NPs using plant extracts can be considered as a cost-effective and efficient method of biological synthesis of NPs and it could be an appropriate replacement to typical chemical methods for the synthesis of NPs.
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