ZnO nanofluids: Green synthesis, characterization, and antibacterial activity

Jalal, Razieh; Goharshadi, Elaheh Kafshdare; Abareshi, Maryam; Moosavi, Majid; Yousefi, Abbas; Nancarrow, Paul

doi:10.1016/j.matchemphys.2010.01.020

Cited by 351 publications

(187 citation statements)

References 27 publications

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“…[10,11] Accordingly, there is an urgent need to develop environment-friendly procedures for synthesising ZnO Nps. [12,13] Recently, green approaches using natural sources such as micro-organisms, plants or plant extracts for nanoparticle synthesis were suggested as valuable alternatives to chemical methods.…”

Section: Introductionmentioning

confidence: 99%

Potato extract as reducing agent and stabiliser in a facile green one-step synthesis of ZnO nanoparticles

Buazar

Bavi

Kroushawi

et al. 2015

Journal of Experimental Nanoscience

117

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A facile green recipe was developed to synthesise highly pure, safe and durable zinc oxide nanoparticles (ZnO Nps) using homemade starch-rich potato extract. The ZnO Nps were synthesised using zinc nitrate and potato extract, and the whole reaction is carried out for 30 min at 80 C. In the synthesis, starch-rich potato extract acted as the reducing agent and as a stabilising layer on freshly formed ZnO Nps. Hexagonal (wurtzite) shaped ZnO Nps with size about 20 § 1.2 nm were synthesised and characterised using X-ray diffraction, transition electron microscope and scanning microscopy analyses. Fourier transform infrared spectral analysis indicated that highly pure ZnO nanopowders were obtained at higher temperatures. The use of environmentally benign and renewable material as the respective reducing and protecting agents, starch-rich potato extract, as well as a gentle solvent medium (H 2 O), offered a simple and quite efficient procedure for the synthesis of ZnO Nps in neutral medium with promising potential for biological and biomedical applications.

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Section: Introductionmentioning

confidence: 99%

Potato extract as reducing agent and stabiliser in a facile green one-step synthesis of ZnO nanoparticles

Buazar

Bavi

Kroushawi

et al. 2015

Journal of Experimental Nanoscience

117

View full text Add to dashboard Cite

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“…Wang and his co-authors employed silver NPs decorated ZnO NP sheets as effective surface enhanced Raman scattering substrate and applied for rapid detection of organic pollutants [24]. Besides, preparation and characterization of ZnO nanofluids (ZnO-NFs) and its applications have been reported [25][26][27][28].…”

Section: Introductionmentioning

confidence: 99%

Nanofluid of zinc oxide nanoparticles in ionic liquid for single drop liquid microextraction of fungicides in environmental waters prior to high performance liquid chromatographic analysis

Amde

Tan

et al. 2015

Journal of Chromatography A

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a b s t r a c tUsing a nanofluid obtained by dispersing ZnO nanoparticles (ZnO NPs) in 1-hexyl-3-methylimidazolium hexafluorophosphate, new single drop microextraction method was developed for simultaneous extraction of three fungicides (chlorothalonil, kresoxim-methyl and famoxadone) in water samples prior to their analysis by high performance liquid chromatography (HPLC-VWD). The parameters affecting the extraction efficiency such as amount of ZnO NPs in the nanofluid, solvent volume, extraction time, stirring rate, pH and ionic strength of the sample solution were optimized. Under the optimized conditions, the limits of detection were in the range of 0.13-0.19 ng/mL, the precision of the method assessed with intra-day and inter-day relative standard deviations were <4.82% and <7.04%, respectively. The proposed method was successfully applied to determine the three fungicides in real water samples including lake water, river water, as well as effluent and influent of wastewater treatment plant, with recoveries in the range of 74.94-96.11% at 5 ng/mL spiking level. Besides to being environmental friendly, the high enrichment factor and the data quality obtained with the proposed method demonstrated its potential for application in multi residue analysis of fungicides in actual water samples.

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“…The novel properties of nanoscale zinc oxide particles have found applications in a variety of applications such as luminescence [1][2][3], varistors [4,5], solar cells [6], gas sensors [7,8]. Many of the synthetic approaches such as sol-gel method [13], co-precipitation [12], hydrothermal method [14], microwave synthesis [9][10][11], and thermal evaporation method [15] have been used for the preparation of ZnO powders. Amongst the different methods of synthesis of ZnO nanostructures, the sol-gel method is attractive for its simplicity and environmentfriendly conditions.…”

Section: Introductionmentioning

confidence: 99%

“…The novelty of this method is that the samples were not purified and centrifuged in the fabrication stage because of oxidation. In many synthesis methods, the researchers purified samples to have uniform particles which oxidize ZnO nanoparticles by purification and centrifugation process [2,8,[10][11][12][13][14][15]. Synthesis of ZnO nanoparticles by sol-gel technique is reported by Zn(NO 3 ) 2 Á6H 2 O precursor and calcined at 500°C.…”

Section: Introductionmentioning

confidence: 99%

Multiple-layered structure of obelisk-shaped crystalline nano-ZnO prepared by sol–gel route

2015

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Zinc oxide nanopowders were synthesized by the simple sol-gel method from an ethanol solution of zinc nitrate hexahydrate. Structural and surface morphological investigations were carried out using X-ray diffraction (XRD), high-resolution transmission electron microscopy (HRTEM), scanning electron microscopy, Fourier transform infrared spectroscopy (FTIR) and ultraviolet-visible (UV-Vis) spectrophotometry analyses. XRD pattern showed that the zinc oxide nanoparticles exhibited hexagonal wurtzite structure. A multiple-layered structure of obelisk-shaped ZnO nanoparticles was achieved after calcinations. The average particle size of ZnO was around 20 nm as estimated by direct HRTEM observation. The size of sphere-like shaped ZnO nanoparticles was measured in the range of 20-80 nm and the size of pyramid-like shaped annealed samples was achieved in the range of 40-100 nm with less agglomeration. The energy dispersive spectroscopy spectrum showed peaks of zinc and oxygen. The sharp peaks in FTIR spectrum determined the Zn-O stretching and absorbance peak of UV-Vis spectrum showed the wide bandgap energy of 3.35 eV.

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ZnO nanofluids: Green synthesis, characterization, and antibacterial activity

Cited by 351 publications

References 27 publications

Potato extract as reducing agent and stabiliser in a facile green one-step synthesis of ZnO nanoparticles

Potato extract as reducing agent and stabiliser in a facile green one-step synthesis of ZnO nanoparticles

Nanofluid of zinc oxide nanoparticles in ionic liquid for single drop liquid microextraction of fungicides in environmental waters prior to high performance liquid chromatographic analysis

Multiple-layered structure of obelisk-shaped crystalline nano-ZnO prepared by sol–gel route

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