mehdi maham - Academia.edu (original) (raw)
Papers by mehdi maham
![Research paper thumbnail of ChemInform Abstract: Copper Iodide Nanoparticles-Catalyzed Cyanation of Aryl Halides Using Non-toxic K4[Fe(CN)6] in the Presence of 1,2-Bis(5-tetrazolyl)benzene as an Efficient Ligand](https://attachments.academia-assets.com/112575406/thumbnails/1.jpg)
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Molecular Catalysis, 2020
Hydrogenation reactions are useful pathways and comprise an integral operation to generate valuab... more Hydrogenation reactions are useful pathways and comprise an integral operation to generate valuable organic compounds. Hydrogenation reactions not only provide an effective route for the preparation of organic compounds such as amines, alkenes, alkanes, alcohols, etc. but also a significant technique to degrade environmental pollutants; reactions are often catalyzed by palladium (Pd) complexes supported on the surface of the polymers, viz. organic or non-organic and are widely deployed owing to their high efficiency, recyclability and good selectivity. Herein, an overview is presented on current developments for the generation of different classes of polymer supported palladium complexes, their characterization and application in hydrogenation of assorted compounds comprising double bonds such as carbonyl-and nitro-compounds, alkynes, and alkenes. The literature from 1981 onwards is summarized pertaining to the hydrogenation reactions deploying polymer-supported Pd complexes catalysts under diverse conditions with special emphasis on the distinguished role of polymers as support in the structural and morphological features of the ensuing catalysts.
Critical Reviews in Food Science and Nutrition
Food Chemistry, 2021
An efficient adsorbent was synthesized and used in magnetic dispersive solid phase extraction (MD... more An efficient adsorbent was synthesized and used in magnetic dispersive solid phase extraction (MDSPE) of aflatoxins B1, B2, G1, and G2 at trace levels in pistachio prior to analysis by HPLC equipped with a fluorescence detector. Spirulina (Sp) algae was first magnetized, followed by surface modification with dopamine (Dp). The adsorbent was characterized using FT-IR, XRD, FE-SEM, EDX, VSM, and BET analyses. The effects of different analytical parameters on the extraction performance were evaluated. Under optimal conditions, good limits of detection (LODs) and quantifications (LOQs) were achieved in the ranges of 0.02-0.07 and 0.06-0.21 ng g-1, respectively. The RSDs were 5.9, 6.3, 5.6, and 7.3% for AFB1, G1, B2, and G2, respectively. The proposed method was successfully used to determine AFs in pistachio samples and acceptable recoveries in the range of 72-95% were obtained.
Iranian journal of pharmaceutical research, 2013
Novel dispersive liquid-liquid microextraction (DLLME), coupled with high performance liquid chro... more Novel dispersive liquid-liquid microextraction (DLLME), coupled with high performance liquid chromatography with photodiode array detection (HPLC-DAD) has been applied for the extraction and determination of cyproheptadine (CPH), an antihistamine, in human urine samples. In this method, 0.6 mL of acetonitrile (disperser solvent) containing 30 μL of carbon tetrachloride (extraction solvent) was rapidly injected by a syringe into 5 mL urine sample. After centrifugation, the sedimented phase containing enriched analyte was dissolved in acetonitrile and an aliquot of this solution injected into the HPLC system for analysis. Development of DLLME procedure includes optimization of some important parameters such as kind and volume of extraction and disperser solvent, pH and salt addition. The proposed method has good linearity in the range of 0.02-4.5 μg mL(-1) and low detection limit (13.1 ng mL(-1)). The repeatability of the method, expressed as relative standard deviation was 4.9% (n = ...
Renewable and Sustainable Energy Reviews, 2019
Abstract Natural sources display a high potential for the production of sustainable materials bec... more Abstract Natural sources display a high potential for the production of sustainable materials because of their exceptional structural and physical features, nontoxicity, biocompatibility, availability and cost-effectiveness. Nanostructured systems show high surface/volume ratio, and unusual electrical, mechanical, surface and magnetic properties. The preparation of heterogeneous nanocatalysts from natural resources has recently become increasingly attractive for researchers. The present overview discuses extensively and comprehensively the main natural sources used to prepare the new generation of safer and cheaper catalytic nanosystems. We place a significant emphasis on both the different synthetic strategies for the preparation of the Nature-inspired nanocatalyst and the role of the natural materials over the structural and morphological properties of the resulting nanocatalysts. The catalytic applications of nature-inspired materials were finally featured, highlighting the advantages of using nanotechnology and environmental resources as well as their potential towards the production of alternative energies.
Chromatographia, 2018
In the present study, a novel technique was proposed to improve the performance of solid-phase mi... more In the present study, a novel technique was proposed to improve the performance of solid-phase microextraction fibers through the chemical deposition of polydimethylsiloxane/divinylbenzene film on modified TiO2 nanotube arrays substrate. Two different techniques, including the self-assembled monolayer of 3-mercaptopropyl trimethoxysilane and NaOH treatment, were examined to modify the surface of TiO2 nanotube arrays. The morphology of the prepared fibers was studied by scanning electron microscopy. The applicability of the novel fiber was evaluated through the headspace solid-phase microextraction of some polycyclic aromatic hydrocarbons as the model compounds followed by GC–MS determination. Influencing parameters on the extraction efficiency such as extraction time, temperature and salt content were studied and optimized. The thermal stability experiments demonstrated that the novel fiber was stable at 280 °C and reusable for more than 80 times without an obvious decrease in the extraction performance. The proposed method was successfully applied to the determination of PAHs in river water samples with good relative recoveries from 75.8 to 104.5% and the relative standard deviation values for all analytes were below 12%. Finally, the extraction performance of the prepared fiber was compared with those of commercially available fibers and similar previously reported fibers.
IET Nanobiotechnology, 2017
Through this study an eco-friendly, simple, efficient, cheap and biocompatible approach to the bi... more Through this study an eco-friendly, simple, efficient, cheap and biocompatible approach to the biosynthesis and stabilisation of CuO nanoparticles (NPs) using the Euphorbia Chamaesyce leaf extract is presented. The CuO NPs were monitored and characterised by field emission scanning electron microscopy, energy dispersive X-ray spectroscopy, Fourier transformed infrared spectroscopy, transmission electron microscope and UV-visible spectroscopy. The biosynthesised CuO NPs showed good catalytic activity for the reduction of 4-nitrophenol (4-NP) in water during 180 s and reused 4 times without considerable loss of activity.
Analytical Sciences, 2011
A fast and simple method for the extraction of deoxynivalenol (DON) from wheat flour using disper... more A fast and simple method for the extraction of deoxynivalenol (DON) from wheat flour using dispersive liquid-liquid microextraction (DLLME) followed by highperformance liquid chromatography-UV detection has been developed and compared with immunoaffinity column cleanup (IAC) process. The influence of several important parameters on the extraction efficacy was studied. Under optimized conditions, a linear calibration curve was obtained in the range of 50-1,000 μg/L. Average recoveries of DON from spiked wheat samples at levels of 500 μg/kg for DLLME and IAC ranged from 72.9±1.6 and 85.5±3.1, respectively. A good correlation was found for spiked samples between DLLME and IAC methods. The limit of detection was 125 and 50 μg/kg for DLLME and IAC method, respectively. Advantages of DLLME method with respect to the IAC have been pointed out.
The application of Pd/Fe 3 O 4 nanoparticles (NPs) for the adsorption of sulfathiazole (STZ) from... more The application of Pd/Fe 3 O 4 nanoparticles (NPs) for the adsorption of sulfathiazole (STZ) from urine samples prior to high performance liquid chromatography-ultraviolet detection was studied. Pd/Fe 3 O 4 NPs were synthesized using plant extract. Possible impact parameters in the extraction process such as magnetic adsorbents amount, extraction time, sample pH, and desorption conditions were investigated and optimized. Under the optimum conditions, the detection and quantification limits were 10 and 30 ng mL −1 , respectively. The relative standard deviation for five measurements of 100 ng mL-1 of STZ was 5.8 %. The proposed method was used for the analysis of different urine samples, and acceptable recoveries in the range of 87.6-101.3% were obtained. These results indicated that biosynthesized Pd/Fe 3 O 4 NPs can be used as an efficient adsorbent for extraction of sulfathiazole from urine samples.
Iranian Journal of Pharmaceutical Research, 2017
The application of Pd/Fe3O4 nanoparticles (NPs) for the adsorption of sulfathiazole (STZ) from ur... more The application of Pd/Fe3O4 nanoparticles (NPs) for the adsorption of sulfathiazole (STZ) from urine samples prior to high performance liquid chromatography-ultraviolet detection was studied. Pd/Fe3O4 NPs were synthesized using plant extract. Possible impact parameters in the extraction process such as magnetic adsorbents amount, extraction time, sample pH, and desorption conditions were investigated and optimized. Under the optimum conditions, the detection and quantification limits were 10 and 30 ng mL-1, respectively. The relative standard deviation for five measurements of 100 ng mL-1 of STZ was 5.8 %. The proposed method was used for the analysis of different urine samples, and acceptable recoveries in the range of 87.6 - 101.3% were obtained. These results indicated that biosynthesized Pd/Fe3O4 NPs can be used as an efficient adsorbent for extraction of sulfathiazole from urine samples.
Composites Part B: Engineering, 2020
Applied Organometallic Chemistry, 2019
Materials Research Bulletin, 2018
Abstract For the first time, a green method is developed to prepare palladium/sodium borosilicate... more Abstract For the first time, a green method is developed to prepare palladium/sodium borosilicate nanocomposite by using aqueous extract of the leaves of Euphorbia milii as bioreducing and stabilizing agent. The immobilization of Pd NPs on the surface of the sodium borosilicate glass was established by several instrumental analysis including X-ray diffraction (XRD), fourier transform infrared spectroscopy (FT-IR), scanning electron microscopy (SEM), energy dispersive X-ray spectroscopy (EDS), EDS elemental dot maps and transmission electron microscopy (TEM). The green synthesized nanocatalyst exhibited excellent performance in the reduction of the chromium (VI) (Cr(VI)), nitro compounds such as 2,4-dinitrophenylhydrazine (2,4-DNPH) and 4-nitrophenol (4-NP) and some organic dyes containing Congo red (CR), Methyl orange (MO), and Methylene blue (MB). The biosynthesized heterogeneous catalyst was easily recovered and reused at least in 5 consecutive reactions with no losing of its performance.
Chemical Physics Letters, 2022
Journal of Health
Background & objectives: Nitroanene compounds and toxic dyes are considered major pollutants in s... more Background & objectives: Nitroanene compounds and toxic dyes are considered major pollutants in sewage of various industries. These synthetic organic compounds are highly toxic and one of the most resistant pollutants in the environment. Developing a simple and effective method to destroy non-biodegradable pollutants into non-hazardous products is one of the major challenges in environmental studies. Methods: In this study, Ag/ZnO nanocatalyst was synthesized using Euphorbia peplus L. extract through a green and simple reduction method. The catalytic activity of the biosynthesized Ag/ZnO nanocomposite was evaluated by reducing 4-nitrophenol (4-NP) and organic dyes such as Methyl orange, Congo red and Methylene blue. Results: The Euphorbia peplus L. extract was used as a reducing and stabilizing agent in green synthesis of nanocomposite. The diameter of the Ag/ZnO nanoparticles was less than 24 nm. Biosynthesized Ag/ZnO nanocatalyst demonstrated effective catalytic activity in reducing 4-nitrophenol, Methyl orange, Congo red and Methylene blue during 330, 300, 39 and 2 s in environmental conditions, respectively. Comparison of the catalytic activity in the reduction of target analytes between Ag/ZnO nanocomposite and other catalysts reported in the literature showed better performance of biosynthesized nanocatalyst. Conclusion: In this study, a simple, green, economical, non-toxic and efficient method was presented to remove biodegradation-resistant pollutants using biosynthesized Ag/ZnO nanocomposite.
Molecular Catalysis, 2020
Hydrogenation reactions are useful pathways and comprise an integral operation to generate valuab... more Hydrogenation reactions are useful pathways and comprise an integral operation to generate valuable organic compounds. Hydrogenation reactions not only provide an effective route for the preparation of organic compounds such as amines, alkenes, alkanes, alcohols, etc. but also a significant technique to degrade environmental pollutants; reactions are often catalyzed by palladium (Pd) complexes supported on the surface of the polymers, viz. organic or non-organic and are widely deployed owing to their high efficiency, recyclability and good selectivity. Herein, an overview is presented on current developments for the generation of different classes of polymer supported palladium complexes, their characterization and application in hydrogenation of assorted compounds comprising double bonds such as carbonyl-and nitro-compounds, alkynes, and alkenes. The literature from 1981 onwards is summarized pertaining to the hydrogenation reactions deploying polymer-supported Pd complexes catalysts under diverse conditions with special emphasis on the distinguished role of polymers as support in the structural and morphological features of the ensuing catalysts.
Critical Reviews in Food Science and Nutrition
Food Chemistry, 2021
An efficient adsorbent was synthesized and used in magnetic dispersive solid phase extraction (MD... more An efficient adsorbent was synthesized and used in magnetic dispersive solid phase extraction (MDSPE) of aflatoxins B1, B2, G1, and G2 at trace levels in pistachio prior to analysis by HPLC equipped with a fluorescence detector. Spirulina (Sp) algae was first magnetized, followed by surface modification with dopamine (Dp). The adsorbent was characterized using FT-IR, XRD, FE-SEM, EDX, VSM, and BET analyses. The effects of different analytical parameters on the extraction performance were evaluated. Under optimal conditions, good limits of detection (LODs) and quantifications (LOQs) were achieved in the ranges of 0.02-0.07 and 0.06-0.21 ng g-1, respectively. The RSDs were 5.9, 6.3, 5.6, and 7.3% for AFB1, G1, B2, and G2, respectively. The proposed method was successfully used to determine AFs in pistachio samples and acceptable recoveries in the range of 72-95% were obtained.
Iranian journal of pharmaceutical research, 2013
Novel dispersive liquid-liquid microextraction (DLLME), coupled with high performance liquid chro... more Novel dispersive liquid-liquid microextraction (DLLME), coupled with high performance liquid chromatography with photodiode array detection (HPLC-DAD) has been applied for the extraction and determination of cyproheptadine (CPH), an antihistamine, in human urine samples. In this method, 0.6 mL of acetonitrile (disperser solvent) containing 30 μL of carbon tetrachloride (extraction solvent) was rapidly injected by a syringe into 5 mL urine sample. After centrifugation, the sedimented phase containing enriched analyte was dissolved in acetonitrile and an aliquot of this solution injected into the HPLC system for analysis. Development of DLLME procedure includes optimization of some important parameters such as kind and volume of extraction and disperser solvent, pH and salt addition. The proposed method has good linearity in the range of 0.02-4.5 μg mL(-1) and low detection limit (13.1 ng mL(-1)). The repeatability of the method, expressed as relative standard deviation was 4.9% (n = ...
Renewable and Sustainable Energy Reviews, 2019
Abstract Natural sources display a high potential for the production of sustainable materials bec... more Abstract Natural sources display a high potential for the production of sustainable materials because of their exceptional structural and physical features, nontoxicity, biocompatibility, availability and cost-effectiveness. Nanostructured systems show high surface/volume ratio, and unusual electrical, mechanical, surface and magnetic properties. The preparation of heterogeneous nanocatalysts from natural resources has recently become increasingly attractive for researchers. The present overview discuses extensively and comprehensively the main natural sources used to prepare the new generation of safer and cheaper catalytic nanosystems. We place a significant emphasis on both the different synthetic strategies for the preparation of the Nature-inspired nanocatalyst and the role of the natural materials over the structural and morphological properties of the resulting nanocatalysts. The catalytic applications of nature-inspired materials were finally featured, highlighting the advantages of using nanotechnology and environmental resources as well as their potential towards the production of alternative energies.
Chromatographia, 2018
In the present study, a novel technique was proposed to improve the performance of solid-phase mi... more In the present study, a novel technique was proposed to improve the performance of solid-phase microextraction fibers through the chemical deposition of polydimethylsiloxane/divinylbenzene film on modified TiO2 nanotube arrays substrate. Two different techniques, including the self-assembled monolayer of 3-mercaptopropyl trimethoxysilane and NaOH treatment, were examined to modify the surface of TiO2 nanotube arrays. The morphology of the prepared fibers was studied by scanning electron microscopy. The applicability of the novel fiber was evaluated through the headspace solid-phase microextraction of some polycyclic aromatic hydrocarbons as the model compounds followed by GC–MS determination. Influencing parameters on the extraction efficiency such as extraction time, temperature and salt content were studied and optimized. The thermal stability experiments demonstrated that the novel fiber was stable at 280 °C and reusable for more than 80 times without an obvious decrease in the extraction performance. The proposed method was successfully applied to the determination of PAHs in river water samples with good relative recoveries from 75.8 to 104.5% and the relative standard deviation values for all analytes were below 12%. Finally, the extraction performance of the prepared fiber was compared with those of commercially available fibers and similar previously reported fibers.
IET Nanobiotechnology, 2017
Through this study an eco-friendly, simple, efficient, cheap and biocompatible approach to the bi... more Through this study an eco-friendly, simple, efficient, cheap and biocompatible approach to the biosynthesis and stabilisation of CuO nanoparticles (NPs) using the Euphorbia Chamaesyce leaf extract is presented. The CuO NPs were monitored and characterised by field emission scanning electron microscopy, energy dispersive X-ray spectroscopy, Fourier transformed infrared spectroscopy, transmission electron microscope and UV-visible spectroscopy. The biosynthesised CuO NPs showed good catalytic activity for the reduction of 4-nitrophenol (4-NP) in water during 180 s and reused 4 times without considerable loss of activity.
Analytical Sciences, 2011
A fast and simple method for the extraction of deoxynivalenol (DON) from wheat flour using disper... more A fast and simple method for the extraction of deoxynivalenol (DON) from wheat flour using dispersive liquid-liquid microextraction (DLLME) followed by highperformance liquid chromatography-UV detection has been developed and compared with immunoaffinity column cleanup (IAC) process. The influence of several important parameters on the extraction efficacy was studied. Under optimized conditions, a linear calibration curve was obtained in the range of 50-1,000 μg/L. Average recoveries of DON from spiked wheat samples at levels of 500 μg/kg for DLLME and IAC ranged from 72.9±1.6 and 85.5±3.1, respectively. A good correlation was found for spiked samples between DLLME and IAC methods. The limit of detection was 125 and 50 μg/kg for DLLME and IAC method, respectively. Advantages of DLLME method with respect to the IAC have been pointed out.
The application of Pd/Fe 3 O 4 nanoparticles (NPs) for the adsorption of sulfathiazole (STZ) from... more The application of Pd/Fe 3 O 4 nanoparticles (NPs) for the adsorption of sulfathiazole (STZ) from urine samples prior to high performance liquid chromatography-ultraviolet detection was studied. Pd/Fe 3 O 4 NPs were synthesized using plant extract. Possible impact parameters in the extraction process such as magnetic adsorbents amount, extraction time, sample pH, and desorption conditions were investigated and optimized. Under the optimum conditions, the detection and quantification limits were 10 and 30 ng mL −1 , respectively. The relative standard deviation for five measurements of 100 ng mL-1 of STZ was 5.8 %. The proposed method was used for the analysis of different urine samples, and acceptable recoveries in the range of 87.6-101.3% were obtained. These results indicated that biosynthesized Pd/Fe 3 O 4 NPs can be used as an efficient adsorbent for extraction of sulfathiazole from urine samples.
Iranian Journal of Pharmaceutical Research, 2017
The application of Pd/Fe3O4 nanoparticles (NPs) for the adsorption of sulfathiazole (STZ) from ur... more The application of Pd/Fe3O4 nanoparticles (NPs) for the adsorption of sulfathiazole (STZ) from urine samples prior to high performance liquid chromatography-ultraviolet detection was studied. Pd/Fe3O4 NPs were synthesized using plant extract. Possible impact parameters in the extraction process such as magnetic adsorbents amount, extraction time, sample pH, and desorption conditions were investigated and optimized. Under the optimum conditions, the detection and quantification limits were 10 and 30 ng mL-1, respectively. The relative standard deviation for five measurements of 100 ng mL-1 of STZ was 5.8 %. The proposed method was used for the analysis of different urine samples, and acceptable recoveries in the range of 87.6 - 101.3% were obtained. These results indicated that biosynthesized Pd/Fe3O4 NPs can be used as an efficient adsorbent for extraction of sulfathiazole from urine samples.
Composites Part B: Engineering, 2020
Applied Organometallic Chemistry, 2019
Materials Research Bulletin, 2018
Abstract For the first time, a green method is developed to prepare palladium/sodium borosilicate... more Abstract For the first time, a green method is developed to prepare palladium/sodium borosilicate nanocomposite by using aqueous extract of the leaves of Euphorbia milii as bioreducing and stabilizing agent. The immobilization of Pd NPs on the surface of the sodium borosilicate glass was established by several instrumental analysis including X-ray diffraction (XRD), fourier transform infrared spectroscopy (FT-IR), scanning electron microscopy (SEM), energy dispersive X-ray spectroscopy (EDS), EDS elemental dot maps and transmission electron microscopy (TEM). The green synthesized nanocatalyst exhibited excellent performance in the reduction of the chromium (VI) (Cr(VI)), nitro compounds such as 2,4-dinitrophenylhydrazine (2,4-DNPH) and 4-nitrophenol (4-NP) and some organic dyes containing Congo red (CR), Methyl orange (MO), and Methylene blue (MB). The biosynthesized heterogeneous catalyst was easily recovered and reused at least in 5 consecutive reactions with no losing of its performance.
Chemical Physics Letters, 2022
Journal of Health
Background & objectives: Nitroanene compounds and toxic dyes are considered major pollutants in s... more Background & objectives: Nitroanene compounds and toxic dyes are considered major pollutants in sewage of various industries. These synthetic organic compounds are highly toxic and one of the most resistant pollutants in the environment. Developing a simple and effective method to destroy non-biodegradable pollutants into non-hazardous products is one of the major challenges in environmental studies. Methods: In this study, Ag/ZnO nanocatalyst was synthesized using Euphorbia peplus L. extract through a green and simple reduction method. The catalytic activity of the biosynthesized Ag/ZnO nanocomposite was evaluated by reducing 4-nitrophenol (4-NP) and organic dyes such as Methyl orange, Congo red and Methylene blue. Results: The Euphorbia peplus L. extract was used as a reducing and stabilizing agent in green synthesis of nanocomposite. The diameter of the Ag/ZnO nanoparticles was less than 24 nm. Biosynthesized Ag/ZnO nanocatalyst demonstrated effective catalytic activity in reducing 4-nitrophenol, Methyl orange, Congo red and Methylene blue during 330, 300, 39 and 2 s in environmental conditions, respectively. Comparison of the catalytic activity in the reduction of target analytes between Ag/ZnO nanocomposite and other catalysts reported in the literature showed better performance of biosynthesized nanocatalyst. Conclusion: In this study, a simple, green, economical, non-toxic and efficient method was presented to remove biodegradation-resistant pollutants using biosynthesized Ag/ZnO nanocomposite.