Synthesis and characterization of ZnO-nanorods loaded onto activated carbon and its application for efficient solid phase extraction and determination of BG from water samples by micro-volume spectrophotometry

Dil, Ebrahim Alipanahpour; Ghaedi, Mehrorang; Asfaram, Arash; Goudarzi, Alireza

doi:10.1039/c5nj02217g

Cited by 74 publications

(7 citation statements)

References 33 publications

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“…Nanotechnology has shown tremendous potential to change society with its varied applications . Nanoparticles (NPs) of zinc, iron, gold, copper and silver are applied in various fields such as pharmaceuticals, agriculture, diagnostics, automotive industry, packaging, paints, etc . Their varied applications are due to their medicinal properties, and they can be synthesized using physical, chemical and biological methods .…”

Section: Introductionmentioning

confidence: 99%

Synthesis of CuS and ZnO/Zn(OH)₂ nanoparticles and their evaluation for in vitro antibacterial and antifungal activities

Khafri

Ghaedi

Asfaram

et al. 2018

Applied Organom Chemis

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In this study, the copper sulfide nanoparticles (CuS‐NPs) and the zinc oxide/zinc hydroxide nanoparticles ((ZnO/Zn(OH)2‐NPs) were synthesized by a simple and low‐cost method, and the synthesized nanoparticles were characterized and identified by UV–Vis, field emission scanning electron microscopy (FE‐SEM), transmission electron microscopy (TEM) and X‐ray diffraction (XRD). The antimicrobial activity of the CuS‐NPs and the ZnO/Zn(OH)2‐NPs were examined by broth dilution to determine the minimal inhibitory concentration (MIC) of antibacterial agent required to inhibit the growth of a pathogen and the minimum bactericidal concentration (MBC) required to kill a particular bacterium. Agar disc diffusion method was used to determine the zone of inhibition. The nanoparticles demonstrated potent antibacterial activity against Klebsiella pneumonia (ATCC 1827), Acinetobacter baumannii (ATCC 150504), Escherichia coli (ATCC 33218) and Staphylococcus aureus (ATCC 25293). Antifungal activity against Aspergillus oryzae (PTCC 5164) was also obtained. The data obtained from antimicrobial activities by broth dilution and agar disc diffusion methods exhibited the CuS‐NPs were more effective than the ZnO/Zn(OH)2‐NPs. A good correlation was observed between the data obtained by both methods.

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Section: Introductionmentioning

confidence: 99%

Synthesis of CuS and ZnO/Zn(OH)₂ nanoparticles and their evaluation for in vitro antibacterial and antifungal activities

Khafri

Ghaedi

Asfaram

et al. 2018

Applied Organom Chemis

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“…More recently, ionic solvatochromic dye (SD) ,− transducers have been introduced to render the optical response independent of sample pH while confining the transducer molecule to the sensor particle. The readout is described as a localized ion-exchange process, where only the charged chromophore functionality of the dye is displaced from the sensing phase by the analyte ion.…”

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Simplified Fabrication for Ion-Selective Optical Emulsion Sensor with Hydrophobic Solvatochromic Dye Transducer: A Cautionary Tale

et al. 2019

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It has recently been reported that polystyrene microbeads may be modified to realize plasticizer-free ion-selective optical sensors (optodes) on the basis of solvatochromic dye transducers. We show here that the functionalized microbeads, individually isolated by flow cytometry, exhibit unexpectedly poor fluorescent properties and that the sensor response is instead attributed to the supernatant. A more thorough study reveals that such optical microemulsion sensors can be made operationally functional and chemically selective, seemingly in the absence of any solvent matrix or added surfactant. Instead, it is shown that residual THF used in the fabrication of the emulsified sensors may solubilize the sensing components and give a functional optode response. To evaluate this further, the number of sensing components was stepwise simplified to assess their need. Variation of residual THF levels has no effect on the ion optode response when plasticizer is present, in support of established results. Lipophilic solvatochromic dye transducers are also shown not to require an added surfactant as their nature already endows the emulsified sensors with a stabilizing ionic surface charge. The ionophores are shown to exhibit much larger stability constants in the surfactant-free formulations than surfactant-based ones (Valionomycin: log!>9.2 compared to 6.1; Na +-ionophore X: 6.7 vs. 4.7), which is attributed to a less polar solvent environment for the ionophore. Potassium, sodium and calcium-selective sensors were used as model systems in this study.

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“…[47][48][49] The observed strong peak in the range of 3235 cm À1 can be attributed to the adsorbed water molecules in the KBr matrix or ZnO-NPs. 44,50,51 The appeared peak at 828 cm À1 can be related to the stretching vibrations mode of Zn-O-Zn that probably is related to two zinc oxides that are linked together by removing a water molecule. 52…”

Section: Fesem Xrd and Ftir Results Of Prepared Zno-npsmentioning

confidence: 99%

“…(a) shows the XRD pattern of the prepared ZnO-NPs. Seven strong peaks observed at around31.8, 34.4, 36.3,47.5,56.5, 62.8, 66.3 and 67.9°are attributed to (100), (002), (101), (102), (110), (103), (112) and (201) planes of ZnO hexagonal structure, respectively 44,45. The strong XRD peaks indicate the wellcrystalized structure of the prepared ZnO-NPs.…”

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Polylactic acid/polycaprolactone bionanocomposites containing zinc oxide nanoparticles: Structure, characterization and cytotoxicity assay

Babaei

Abdolrasouli

Rostami

2022

Journal of Thermoplastic Composite Materials

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In the present study, zinc oxide nanoparticles (ZnO-NPs) were synthesized by a hydrothermal method followed by the fabrication of polylactic acid/polycaprolactone blend (PLA/PCL, 80/20 wt/wt) at various loadings of ZnO-NPs (2, 4, and 6 wt%) via melt mixing. FTIR and XRD patterns confirmed that the ZnO-NPs were successfully synthesized. The ZnO-NPs with an average diameter of about 46–73 nm were observed by the FESEM analysis. The effect of ZnO-NPs on morphological, thermal, UV absorption, mechanical, photochemical degradation, rheological and cell viability properties of PLA/PCL blend were investigated. FESEM micrographs of bionanocomposites demonstrated that polycaprolactone was dispersed as a droplet to the Polylactic acid matrix phase. DSC analysis showed that the addition of ZnO-NPs increased the degree of crystallinity and melting temperature of the PLA. Mechanical assessment of the bionanocomposites reveals that the addition of 2, 4 and 6 wt.% of ZnO-NPs into the blend sample leads to increase in the tensile modulus by about 5.4, 11 and 24%. The MTT assay results implied that cell viability of the both filled and unfilled samples is greater than 90% indicating their biocompatibility to the fibroblast cells. It is observed that the melt linear viscoelastic properties of the prepared bionanocomposites are under control of LA/PCL chain degradation and hydrodynamic nanoparticles interaction.

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Synthesis and characterization of ZnO-nanorods loaded onto activated carbon and its application for efficient solid phase extraction and determination of BG from water samples by micro-volume spectrophotometry

Abstract: The applicability of ZnO-nanorods loaded onto activated carbon (ZnO-NRs-AC) for the dispersive solid phase microextraction (DSPME) of brilliant green (BG) from water samples has been described.

Cited by 74 publications

References 33 publications

Synthesis of CuS and ZnO/Zn(OH)₂ nanoparticles and their evaluation for in vitro antibacterial and antifungal activities

Synthesis of CuS and ZnO/Zn(OH)₂ nanoparticles and their evaluation for in vitro antibacterial and antifungal activities

Simplified Fabrication for Ion-Selective Optical Emulsion Sensor with Hydrophobic Solvatochromic Dye Transducer: A Cautionary Tale

Polylactic acid/polycaprolactone bionanocomposites containing zinc oxide nanoparticles: Structure, characterization and cytotoxicity assay

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Synthesis and characterization of ZnO-nanorods loaded onto activated carbon and its application for efficient solid phase extraction and determination of BG from water samples by micro-volume spectrophotometry

Abstract: The applicability of ZnO-nanorods loaded onto activated carbon (ZnO-NRs-AC) for the dispersive solid phase microextraction (DSPME) of brilliant green (BG) from water samples has been described.

Cited by 74 publications

References 33 publications

Synthesis of CuS and ZnO/Zn(OH)2 nanoparticles and their evaluation for in vitro antibacterial and antifungal activities

Synthesis of CuS and ZnO/Zn(OH)2 nanoparticles and their evaluation for in vitro antibacterial and antifungal activities

Simplified Fabrication for Ion-Selective Optical Emulsion Sensor with Hydrophobic Solvatochromic Dye Transducer: A Cautionary Tale

Polylactic acid/polycaprolactone bionanocomposites containing zinc oxide nanoparticles: Structure, characterization and cytotoxicity assay

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Synthesis of CuS and ZnO/Zn(OH)₂ nanoparticles and their evaluation for in vitro antibacterial and antifungal activities

Synthesis of CuS and ZnO/Zn(OH)₂ nanoparticles and their evaluation for in vitro antibacterial and antifungal activities