Papers by fatemeh sedaghati
Royal Society of Chemistry eBooks, Aug 10, 2023
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Analytica Chimica Acta, Sep 1, 2013
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Toxicology and Industrial Health, Feb 1, 2020
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Iranian Journal of Science
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Microchemical Journal
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The use of nanoparticles (NPs) has been extended to many fields such as agriculture, food industr... more The use of nanoparticles (NPs) has been extended to many fields such as agriculture, food industry, medicine and biotechnological fields. Thereby, human exposure to NPs consequently increases. Therefore, there is a concern about the potential biological effects and toxicity of NPs for humans and the environment. This study aimed to investigate the cytotoxicity effects of magnesium oxide (MgO) and silica (SiO2) NPs on human colon adenocarcinoma (HT-29) after 24 hours of exposure. In this study, cytotoxicity of MgO and SiO2 NPs was evaluated using MTT assay after 24 hours of MgO (50 nm) and SiO2 (90-110 nm) NPs exposure at doses of 25-200 µg/ml. Moreover, to assess the rate of cell apoptosis, cells were stained with ethidium bromide/acridine orange stain. The staining was examined under a fluorescent microscope. The exposure of HT29 cells to SiO2 and MgO NPs increased cytotoxicity in a dose-dependent manner. Also, these results showed a significant increase in apoptosis induction in t...
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Journal of Fasa University of Medical Sciences, 2017
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Journal of Polymer Research, 2021
The increased applications of Polyurethane ( PU) materials give rise to a higher amount of wastes... more The increased applications of Polyurethane ( PU) materials give rise to a higher amount of wastes, which have a devastating effect on the earth in turn; therefore, the management of end-of-life wastes is one of the most important issues in the modern world. Although incineration and landfilling are the most common procedure adopted for waste disposal, but both of them caused environmental problems such as air and soil pollution. Moreover, the former triggers global warming, and the latter causes water pollution making the problem worst. As a consequence, finding economical and environmentally friendly methods are a high priority topic for researchers to overcome this problem. Fortunately, recycling is an environmentally attractive solution, and there is an increased interest by the researchers in recycling PU wastes. Several recycling techniques for PUs have been described in the technical and scientific literature. Without any doubt, glycolysis reaction is one of the most important recycling method, especially for rigid and flexible PUs. In this review, glycolysis of waste polyurethane foam (PUF) materials with different glycols and catalysts, especially metallic ones were considered, and the effect of some additional parameters such as the nature of glycol, catalyst, temperature and material ratio were discussed too. In addition, a brief description on characterization of recycled products, and potential application of regenerated products is carried out. Graphical abstract
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International Journal of Environmental Science and Technology, 2021
Fungicides that are broadly used in agriculture for plant protection may move into and contaminat... more Fungicides that are broadly used in agriculture for plant protection may move into and contaminate water through subsurface drainage or leaching. The removal of fungicide residue has attracted scholars’ attentions mostly owing to their ecotoxicological risks. Researchers in parallel have led attempts to investigate the adsorption potency of the exceptional features of metal–organic frameworks (MOFs) such as extremely high surface area, high thermal, chemical stabilities, and a porous structure with tunable pore sizes. The MIL-101(Cr) was prepared by hydrothermal procedure and was characterized by different techniques. It was introduced as an effective adsorbent for removing propiconazole fungicide from aqueous solutions. Design-Expert software was used for process optimization. The effect and interactions of different factors such as temperature, adsorbent concentration, contact time, pH, and initial concentration were investigated. After the preliminary screening tests, response surface methodology based on the central composite design was utilized to optimize the adsorption process. About 90% of propiconazole was removed at the optimum conditions. The study of the adsorption mechanism was performed by Langmuir and Freundlich isotherm models. The kinetics of the adsorption system were examined by comparing the pseudo-first-order, pseudo-second-order, and Morris–Weber models. Adsorption of propiconazole reached equilibrium in 100 min. The maximum adsorption capacity obtained for MIL-101(Cr) based on pseudo-second-order model was 89.78 mg/g. Finally, the proposed adsorbent was used for five consecutive cycles without washing steps; its removal efficiency was reduced by about 21% and also regeneration of adsorbent with different solvents was carried out and the best reusability was achieved by ethanol.
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Materials Science and Engineering: C, 2019
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Journal of Molecular Liquids, 2017
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RSC Advances, 2012
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Luminescence, 2014
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Chemical Communications, 2008
Incorporation of a phosphorylated ionic liquid as both a complexing and reducing agent for Pd(II)... more Incorporation of a phosphorylated ionic liquid as both a complexing and reducing agent for Pd(II) in a xerogel results in the formation of highly dispersed, uniformly sized Pd nanocatalysts, tightly supported on the surface of the silica and not embedded in the bulk of the xerogel.
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Analytical Biochemistry, 2007
The electrochemistry of L-cysteine (CySH) in neutral aqueous media was investigated using carbon ... more The electrochemistry of L-cysteine (CySH) in neutral aqueous media was investigated using carbon ionic liquid electrode (CILE). Comparative experiments were carried out using glassy carbon electrodes. At CILE, highly reproducible and well-defined cyclic voltammograms were obtained for l-cysteine with a peak potential of 0.49V vs Ag/AgCl, showing that CILE manifests a good electrocatalytic activity toward oxidation of l-cysteine. A linear dynamic range of 2-210microM with an experimental detection limit of 2microM was obtained. The method was successfully applied to the determination of l-cysteine in a sample of soya milk. Cysteine oxidation at CILE does not result in deactivation of the electrode surface. Mechanistic studies showed that, at CILE, the overall CySH oxidation is controlled by the oxidation of the CyS(-) electroactive species.
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Microchemical Journal, 2018
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Papers by fatemeh sedaghati