Hossein Vojoudi - Academia.edu (original) (raw)
Papers by Hossein Vojoudi
Current Analytical Chemistry
Background: Copper is one of several heavy metals. A low concentration of copper is vital for ani... more Background: Copper is one of several heavy metals. A low concentration of copper is vital for animals and plants, whereas it is highly toxic to aquatic plants and bacteria in a high concentration. Therefore, copper ions in water and food must be controlled, and as a result, the development of novel methods for the determination of copper in water samples is of interest. Objective: Different techniques have been proposed for copper ions extraction and determination. The magnetic solid -phase extraction method is considered superior to the other method for simplicity, its higher enrichment, and the need for lower quantities of solvents. The novel modified magnetite nanoparticles as the sorbent, along with the atomic absorption spectrometry analysis, can be a low‐cost, simple and rapid method for this propose. Methods: Traces of Cu(II) in environmental samples were preconcentrated using a novel magnetic adsorbent developed based on 2,2´-((1E,1´E)-hydrazine-1,2-diylidenebis(methanylylid...
Water Footprint and the Impact of Food Production Environmental Sustainability, Aug 3, 2021
Advanced Powder Technology, 2021
Abstract A hybrid nanocomposite of alumina and hematite was synthesized by ultrasonic spray pyrol... more Abstract A hybrid nanocomposite of alumina and hematite was synthesized by ultrasonic spray pyrolysis technique. The study of microscopic images, mapping analysis, and XRD patterns revealed that the Al2O3 – Fe2O3 nanocomposite was composed of separated spherical particles with a thin layer ball-shaped structure that metal oxides are uniformly distributed in the wall of hollow sphere particles, led to a coherent and monotonous construction. A series of coefficients of equilibrium sorption of polycyclic aromatic hydrocarbons (PAHs) as hazardous materials were measured on the prepared composite material in a batch technique. The free or pure Al2O3 or Fe2O3 showed negligible removal efficiency for the mentioned analytes. The various significant variables, such as initial analyte concentration, solution pH, adsorbent dose, and contact time to remove analyte, were studied in the aqueous solutions. Adsorption data were modeled to Langmuir, Freundlich, and Temkin isotherms, and a good correlation found in the case of Langmuir isotherm and adsorption capacity for anthracene, phenanthrene, and naphthalene were 370, 333, and 322 mg g−1, respectively. Investigation of the kinetic models proved a pseudo-second-order, and the prepared adsorbent can be reused more than 7 times without a significant decrease of adsorption performance.
Microchemical Journal, 2021
SSRN Electronic Journal, 2021
A green and sensitive analytical procedure by dispersive solid-phase nanoextraction (DSPNE) strat... more A green and sensitive analytical procedure by dispersive solid-phase nanoextraction (DSPNE) strategy based on mesoporous nitrogen-doped hollow carbon sphere as adsorbent is developed for the simultaneous determination of atorvastatin (AT) and amlodipine (AM) in spiked human plasma. The determination method was based on measuring the synchronous fluorescence intensity of the drugs at a constant wavelength difference (Δλ=40 nm). The different experimental parameters influencing the extraction efficiency of the two drugs were studied and optimized. The limits of detection were 3.24 and 0.406 ng. ml -1 and quantification limits were 10.8 and 1.36 ng. ml -1 for AT and AM, respectively. Validation assays indicated that the concentration ranges were linear in 11-120 for AT and 2-90 ng ml -1 for AM, with R 2 >0.993 for both drugs. Under optimum conditions, extraction recovery was 94% and 89% with RSD% 3.9 and 4.7 (n=4) for AT and AM, respectively. The developed method has been found to be simple, economical, and reproducible for the routine analysis of both drugs in biological fluids.
International Journal of Research Publications, 2021
Freshwater is a sparse source. It takes a significant amount of water to get food that we eat fro... more Freshwater is a sparse source. It takes a significant amount of water to get food that we eat from the fields to the plates on our dining room tables. What we eat makes up a large number of our water footprints. A water footprint is used to indicate the amount of freshwater that any given process or activity uses. In addition to our diets, issues revolving around water footprint include water depletion and pollution. Water depletion, specifically freshwater depletion refers to the lack of sufficient available fresh water resources to meet water demand. Water pollution occurs when harmful substances such as microorganisms contaminate a source of fresh water such as a lake, stream, or river. The water footprint of food is significantly high and that is why it is important that we reduce food waste to preserve and protect the food available to us.
Microchemical Journal, 2020
Abstract In this paper, an efficient, simple and environment-friendly stir-bar type adsorbent was... more Abstract In this paper, an efficient, simple and environment-friendly stir-bar type adsorbent was designed and applied for the rapid extraction of noble metal ions. To obtain the mentioned sorbent, the surface of a glass stir-bar was covalently grafted by tetra sulfide functionalized graphene oxide. The potential of the modified stir-bar was studied as an effective and convenient sorbent for the adsorption and extraction of noble metal ions from aqueous solutions in a normal batch system. The effect of important variables on the adsorption efficiency of the analytes were investigated. Under the optimal conditions, the designed stir-bar showed high adsorption capacity. The static and dynamic of the adsorption process were investigated and they were matched to the Langmuir isotherm and pseudo-second-order kinetic model, respectively. In addition, the regeneration test indicated that the prepared modified stir-bar adsorption can be applied at least for seven cycles successively without any substantial loss in efficiency.
Journal of Porous Materials, 2020
An efficient magnetic mesoporous structure was designed and prepared for the facile pre-concentra... more An efficient magnetic mesoporous structure was designed and prepared for the facile pre-concentration of As(III) ions. To prepare the sorbent, core-shell magnetic silica nanoparticles were covered by MCM-41 like structure and then the surface was modified by guanidine via an amine linker (GA-MSMP). The prepared adsorbent was investigated as an effective and sensitive material for the adsorption of arsenic ions from the aqueous solution by applying a normal batch method. The imperative variables of the adsorption were studied to increase efficiency. The dynamic and static processes were tested that matched a pseudo-second-order of kinetic model and the Langmuir isotherm model, respectively. The sorbent reusability was investigated and it was confirmed that the designed product could be applied at best for six cycles successively without any significant efficiency losing. The synthesized product was tested to determine and pre-concentrate trace amounts of arsenic ions in rice and natural waters as a real sample. A desorption process applying 5 mL of hydrochloric acid (0.5 mol L −1) as an eluent, exhibited about 98% recovery of the As(III) ions adsorbed on the GA-MSMP sorbent. The maximum adsorption capacity of the GA-MSMP was calculated to be 312 mg g −1 for adsorption of As(III) under the optimal conditions.
Materials Chemistry and Physics, 2018
2,2'-(butane-1,4-diylbis(oxy))dibenzaldehyde cross-linked magnetic chitosan nanoparticles as a ne... more 2,2'-(butane-1,4-diylbis(oxy))dibenzaldehyde cross-linked magnetic chitosan nanoparticles as a new adsorbent for the removal of reactive red 239 from aqueous solutions
Food Chemistry, 2018
A simple, cheap and efficient method for pre-concentrating and separating Zn(II) ions from aqueou... more A simple, cheap and efficient method for pre-concentrating and separating Zn(II) ions from aqueous solutions and real samples has been designed. The method was implemented in a prototype featuring interchangeable chromatography-column-like cartridges, filled with meso-porous silica nanostructures, allowing easy exchange of the type and quantity of the sorbent. The adsorbents inside the column are held in place by means of porous polymer nano-fibre membranes. The effects of various parameters on the adsorption of Zn(II) ions from aqueous solutions were investigated. Maximal adsorption (~99%) was found for Zn(II) ions amongst a mixture of Cu(II), Co(II), Ni(II), Ag(I), Au(III), Pd(II) and Pb(II) in aqueous solution. The procedure was tested for pre-concentrating and determining traces of zinc in real samples of meat, fish and hen marketed in Tehran. A desorption process using 0.5 mol L-1 HCl as eluent, showed ~97% recovery of the Zn(II) ions adsorbed on the MSMPP sorbent.
Journal of Physics and Chemistry of Solids, 2018
In this study, a home-made device comprising a column filled with magnetic mesoporous silicacoate... more In this study, a home-made device comprising a column filled with magnetic mesoporous silicacoated nanostructures (MSCM-PA) as an adsorbent was constructed and used to remove organic pollutants from aqueous solutions. The MSCM-PA adsorbent was prepared and characterized using Fourier transform-infrared spectroscopy, ultraviolet-visible spectroscopy, scanning electron microscopy, transmission electron microscopy, energy dispersive X-ray spectroscopy, vibrating sample magnetometry, Brunauer-Emmett-Teller, thermogravimetric analysis/differential thermal analysis, and powder X-ray diffraction techniques. The adsorption behavior of the MSCM-PA sorbent was studied based on the removal of Everzol blue dye from aqueous solutions. We investigated the effects of various parameters such as the solution pH, initial dye concentration, adsorbent dose, flow rate, and contact time on the adsorption of Everzol blue from aqueous solutions. The adsorption data were modeled using Langmuir and Freundlich isotherms, and a good fit was obtained with the Langmuir isotherm. The maximum Everzol blue adsorption capacity by MSCM-PA was 162 mg g −1. The results indicate that our device is capable of adsorbing anionic dyes from aqueous solutions.
Powder Technology, 2017
Post-modification of nanoporous silica type SBA-15 by bis(3triethoxysilylpropyl)tetrasulfide as a... more Post-modification of nanoporous silica type SBA-15 by bis(3triethoxysilylpropyl)tetrasulfide as an efficient adsorbent for arsenic removal
Powder Technology, 2017
Synthesis of silica gel modified with 2,2-(hexane-1,6diylbis(oxy))dibenzaldehyde as an new adsorb... more Synthesis of silica gel modified with 2,2-(hexane-1,6diylbis(oxy))dibenzaldehyde as an new adsorbent for the removal of Reactive Yellow 84 and Reactive Blue 19-dyes from aqueous solutions: Equilibrium and thermodynamic studies
Surface Review and Letters, 2017
Graphene oxide (GO) and GO-TiO2 nanocomposite was produced then reduced under pulse laser irradia... more Graphene oxide (GO) and GO-TiO2 nanocomposite was produced then reduced under pulse laser irradiation (RGO–TiO[Formula: see text]. Basic blue 41 (bb41) dye was removed from aqueous solutions by using RGO–TiO2 nanocomposites. The UV–Vis absorption and FTIR analysis were utilized to confirm the reduction of GO-TiO2 to RGO–TiO2. The results showed complete reduction of GO. X-ray diffraction (XRD), Raman spectra and scanning electron microscopy (SEM) analysis were applied to approve the RGO–TiO2 nanocomposite structure. The effect of pH on the bb41 removal by RGO–TiO2 was studied varying the pH from 1 to 11. The optimum pH and adsorbent dosage were found to be 9 and 0.2[Formula: see text]g/L with 98% efficiency, respectively. The calculated coefficients demonstrated that the Langmuir model was fixed to the experimental data. The results indicated that RGO–TiO2 could be engaged as an exceptional sorbent to remove bb41 dye which is in aqueous solution.
Journal of Magnetism and Magnetic Materials, 2017
A new nano-sorbent for fast and efficient removal of heavy metals from aqueous solutions based on... more A new nano-sorbent for fast and efficient removal of heavy metals from aqueous solutions based on modification of magnetic mesoporous silica nanospheres,
Microchimica Acta, 2017
Two new adsorbents were synthesized by covalently grafting 2,3-Bis(2-formylphenoxy)-propan-1-ol (... more Two new adsorbents were synthesized by covalently grafting 2,3-Bis(2-formylphenoxy)-propan-1-ol (BH) onto the surface of silica-coated magnetic nanoparticles and silica gel by a conventional method and a vice-versa method. The morphology and properties of the adsorbents were characterized by FT-IR, XRD, SEM, TEM, VSM, TGA, UV-Vis, Optical microscope and DLS. The materials are shown to be effective adsorbents for the selective extraction of the ions of Au(III), Pd(II) and Ag(I) from aqueous mixed metal ions solution also containing Cu(II), Co(II), Ni(II), Zn(II) and Pb(II). Syringe and batch techniques are compared. The ions can be desorbed with 0.5 M HCl and quantified by FAAS. The maximum adsorption capacity of the MN-Si-NH 2-BH and Si-NH 2-BH were determined to be 257, 197 mg•g −1 for Au(III), 311, 191 mg•g −1 for Ag(I) and 301, 222 mg•g −1 for Pd(II), respectively. The detection limits (for n = 15 and at an S/N ratio of 2 blank standard deviations) are 0.12, 0.28, and 0.17 μg•L −1 for Au(III), Pd(II) and Ag(I), respectively.
In 2020 in the U.S alone over 40 million tons of food were wasted. Part of this waste is attribut... more In 2020 in the U.S alone over 40 million tons of food were wasted. Part of this waste is attributed to discarded fruits and vegetables and equals 7% of croplands’ yearly production. Reducing food waste can be an important factor in improving environmental and social sustainability. Lack or inadequate, knowledge of food preparation, storage, and cooking has contributed to this loss. One method of reducing food wastes is decreasing the amount of waste in households by using nutrition education intervention interventions such as training local communities to improve their cooking skills and general food storage and preparation knowledge. Consumers will also be more environmentally and economically sustainable, with less food waste in each household. The objective of this study is to prepare a report that can be used for developing nutrition education guidelines for nutrition educators, with the ultimate goal being to increase the knowledge of local residents to create a more sustainabl...
RSC Adv., 2015
In this study, new silica-coated magnetic nanoparticles modified with bisaldehyde (BISA–APTSCMNPs... more In this study, new silica-coated magnetic nanoparticles modified with bisaldehyde (BISA–APTSCMNPs) were synthesized using a normal method and a vice versa method.
Analytical and Bioanalytical Chemistry
Journal of Magnetism and Magnetic Materials
Current Analytical Chemistry
Background: Copper is one of several heavy metals. A low concentration of copper is vital for ani... more Background: Copper is one of several heavy metals. A low concentration of copper is vital for animals and plants, whereas it is highly toxic to aquatic plants and bacteria in a high concentration. Therefore, copper ions in water and food must be controlled, and as a result, the development of novel methods for the determination of copper in water samples is of interest. Objective: Different techniques have been proposed for copper ions extraction and determination. The magnetic solid -phase extraction method is considered superior to the other method for simplicity, its higher enrichment, and the need for lower quantities of solvents. The novel modified magnetite nanoparticles as the sorbent, along with the atomic absorption spectrometry analysis, can be a low‐cost, simple and rapid method for this propose. Methods: Traces of Cu(II) in environmental samples were preconcentrated using a novel magnetic adsorbent developed based on 2,2´-((1E,1´E)-hydrazine-1,2-diylidenebis(methanylylid...
Water Footprint and the Impact of Food Production Environmental Sustainability, Aug 3, 2021
Advanced Powder Technology, 2021
Abstract A hybrid nanocomposite of alumina and hematite was synthesized by ultrasonic spray pyrol... more Abstract A hybrid nanocomposite of alumina and hematite was synthesized by ultrasonic spray pyrolysis technique. The study of microscopic images, mapping analysis, and XRD patterns revealed that the Al2O3 – Fe2O3 nanocomposite was composed of separated spherical particles with a thin layer ball-shaped structure that metal oxides are uniformly distributed in the wall of hollow sphere particles, led to a coherent and monotonous construction. A series of coefficients of equilibrium sorption of polycyclic aromatic hydrocarbons (PAHs) as hazardous materials were measured on the prepared composite material in a batch technique. The free or pure Al2O3 or Fe2O3 showed negligible removal efficiency for the mentioned analytes. The various significant variables, such as initial analyte concentration, solution pH, adsorbent dose, and contact time to remove analyte, were studied in the aqueous solutions. Adsorption data were modeled to Langmuir, Freundlich, and Temkin isotherms, and a good correlation found in the case of Langmuir isotherm and adsorption capacity for anthracene, phenanthrene, and naphthalene were 370, 333, and 322 mg g−1, respectively. Investigation of the kinetic models proved a pseudo-second-order, and the prepared adsorbent can be reused more than 7 times without a significant decrease of adsorption performance.
Microchemical Journal, 2021
SSRN Electronic Journal, 2021
A green and sensitive analytical procedure by dispersive solid-phase nanoextraction (DSPNE) strat... more A green and sensitive analytical procedure by dispersive solid-phase nanoextraction (DSPNE) strategy based on mesoporous nitrogen-doped hollow carbon sphere as adsorbent is developed for the simultaneous determination of atorvastatin (AT) and amlodipine (AM) in spiked human plasma. The determination method was based on measuring the synchronous fluorescence intensity of the drugs at a constant wavelength difference (Δλ=40 nm). The different experimental parameters influencing the extraction efficiency of the two drugs were studied and optimized. The limits of detection were 3.24 and 0.406 ng. ml -1 and quantification limits were 10.8 and 1.36 ng. ml -1 for AT and AM, respectively. Validation assays indicated that the concentration ranges were linear in 11-120 for AT and 2-90 ng ml -1 for AM, with R 2 >0.993 for both drugs. Under optimum conditions, extraction recovery was 94% and 89% with RSD% 3.9 and 4.7 (n=4) for AT and AM, respectively. The developed method has been found to be simple, economical, and reproducible for the routine analysis of both drugs in biological fluids.
International Journal of Research Publications, 2021
Freshwater is a sparse source. It takes a significant amount of water to get food that we eat fro... more Freshwater is a sparse source. It takes a significant amount of water to get food that we eat from the fields to the plates on our dining room tables. What we eat makes up a large number of our water footprints. A water footprint is used to indicate the amount of freshwater that any given process or activity uses. In addition to our diets, issues revolving around water footprint include water depletion and pollution. Water depletion, specifically freshwater depletion refers to the lack of sufficient available fresh water resources to meet water demand. Water pollution occurs when harmful substances such as microorganisms contaminate a source of fresh water such as a lake, stream, or river. The water footprint of food is significantly high and that is why it is important that we reduce food waste to preserve and protect the food available to us.
Microchemical Journal, 2020
Abstract In this paper, an efficient, simple and environment-friendly stir-bar type adsorbent was... more Abstract In this paper, an efficient, simple and environment-friendly stir-bar type adsorbent was designed and applied for the rapid extraction of noble metal ions. To obtain the mentioned sorbent, the surface of a glass stir-bar was covalently grafted by tetra sulfide functionalized graphene oxide. The potential of the modified stir-bar was studied as an effective and convenient sorbent for the adsorption and extraction of noble metal ions from aqueous solutions in a normal batch system. The effect of important variables on the adsorption efficiency of the analytes were investigated. Under the optimal conditions, the designed stir-bar showed high adsorption capacity. The static and dynamic of the adsorption process were investigated and they were matched to the Langmuir isotherm and pseudo-second-order kinetic model, respectively. In addition, the regeneration test indicated that the prepared modified stir-bar adsorption can be applied at least for seven cycles successively without any substantial loss in efficiency.
Journal of Porous Materials, 2020
An efficient magnetic mesoporous structure was designed and prepared for the facile pre-concentra... more An efficient magnetic mesoporous structure was designed and prepared for the facile pre-concentration of As(III) ions. To prepare the sorbent, core-shell magnetic silica nanoparticles were covered by MCM-41 like structure and then the surface was modified by guanidine via an amine linker (GA-MSMP). The prepared adsorbent was investigated as an effective and sensitive material for the adsorption of arsenic ions from the aqueous solution by applying a normal batch method. The imperative variables of the adsorption were studied to increase efficiency. The dynamic and static processes were tested that matched a pseudo-second-order of kinetic model and the Langmuir isotherm model, respectively. The sorbent reusability was investigated and it was confirmed that the designed product could be applied at best for six cycles successively without any significant efficiency losing. The synthesized product was tested to determine and pre-concentrate trace amounts of arsenic ions in rice and natural waters as a real sample. A desorption process applying 5 mL of hydrochloric acid (0.5 mol L −1) as an eluent, exhibited about 98% recovery of the As(III) ions adsorbed on the GA-MSMP sorbent. The maximum adsorption capacity of the GA-MSMP was calculated to be 312 mg g −1 for adsorption of As(III) under the optimal conditions.
Materials Chemistry and Physics, 2018
2,2'-(butane-1,4-diylbis(oxy))dibenzaldehyde cross-linked magnetic chitosan nanoparticles as a ne... more 2,2'-(butane-1,4-diylbis(oxy))dibenzaldehyde cross-linked magnetic chitosan nanoparticles as a new adsorbent for the removal of reactive red 239 from aqueous solutions
Food Chemistry, 2018
A simple, cheap and efficient method for pre-concentrating and separating Zn(II) ions from aqueou... more A simple, cheap and efficient method for pre-concentrating and separating Zn(II) ions from aqueous solutions and real samples has been designed. The method was implemented in a prototype featuring interchangeable chromatography-column-like cartridges, filled with meso-porous silica nanostructures, allowing easy exchange of the type and quantity of the sorbent. The adsorbents inside the column are held in place by means of porous polymer nano-fibre membranes. The effects of various parameters on the adsorption of Zn(II) ions from aqueous solutions were investigated. Maximal adsorption (~99%) was found for Zn(II) ions amongst a mixture of Cu(II), Co(II), Ni(II), Ag(I), Au(III), Pd(II) and Pb(II) in aqueous solution. The procedure was tested for pre-concentrating and determining traces of zinc in real samples of meat, fish and hen marketed in Tehran. A desorption process using 0.5 mol L-1 HCl as eluent, showed ~97% recovery of the Zn(II) ions adsorbed on the MSMPP sorbent.
Journal of Physics and Chemistry of Solids, 2018
In this study, a home-made device comprising a column filled with magnetic mesoporous silicacoate... more In this study, a home-made device comprising a column filled with magnetic mesoporous silicacoated nanostructures (MSCM-PA) as an adsorbent was constructed and used to remove organic pollutants from aqueous solutions. The MSCM-PA adsorbent was prepared and characterized using Fourier transform-infrared spectroscopy, ultraviolet-visible spectroscopy, scanning electron microscopy, transmission electron microscopy, energy dispersive X-ray spectroscopy, vibrating sample magnetometry, Brunauer-Emmett-Teller, thermogravimetric analysis/differential thermal analysis, and powder X-ray diffraction techniques. The adsorption behavior of the MSCM-PA sorbent was studied based on the removal of Everzol blue dye from aqueous solutions. We investigated the effects of various parameters such as the solution pH, initial dye concentration, adsorbent dose, flow rate, and contact time on the adsorption of Everzol blue from aqueous solutions. The adsorption data were modeled using Langmuir and Freundlich isotherms, and a good fit was obtained with the Langmuir isotherm. The maximum Everzol blue adsorption capacity by MSCM-PA was 162 mg g −1. The results indicate that our device is capable of adsorbing anionic dyes from aqueous solutions.
Powder Technology, 2017
Post-modification of nanoporous silica type SBA-15 by bis(3triethoxysilylpropyl)tetrasulfide as a... more Post-modification of nanoporous silica type SBA-15 by bis(3triethoxysilylpropyl)tetrasulfide as an efficient adsorbent for arsenic removal
Powder Technology, 2017
Synthesis of silica gel modified with 2,2-(hexane-1,6diylbis(oxy))dibenzaldehyde as an new adsorb... more Synthesis of silica gel modified with 2,2-(hexane-1,6diylbis(oxy))dibenzaldehyde as an new adsorbent for the removal of Reactive Yellow 84 and Reactive Blue 19-dyes from aqueous solutions: Equilibrium and thermodynamic studies
Surface Review and Letters, 2017
Graphene oxide (GO) and GO-TiO2 nanocomposite was produced then reduced under pulse laser irradia... more Graphene oxide (GO) and GO-TiO2 nanocomposite was produced then reduced under pulse laser irradiation (RGO–TiO[Formula: see text]. Basic blue 41 (bb41) dye was removed from aqueous solutions by using RGO–TiO2 nanocomposites. The UV–Vis absorption and FTIR analysis were utilized to confirm the reduction of GO-TiO2 to RGO–TiO2. The results showed complete reduction of GO. X-ray diffraction (XRD), Raman spectra and scanning electron microscopy (SEM) analysis were applied to approve the RGO–TiO2 nanocomposite structure. The effect of pH on the bb41 removal by RGO–TiO2 was studied varying the pH from 1 to 11. The optimum pH and adsorbent dosage were found to be 9 and 0.2[Formula: see text]g/L with 98% efficiency, respectively. The calculated coefficients demonstrated that the Langmuir model was fixed to the experimental data. The results indicated that RGO–TiO2 could be engaged as an exceptional sorbent to remove bb41 dye which is in aqueous solution.
Journal of Magnetism and Magnetic Materials, 2017
A new nano-sorbent for fast and efficient removal of heavy metals from aqueous solutions based on... more A new nano-sorbent for fast and efficient removal of heavy metals from aqueous solutions based on modification of magnetic mesoporous silica nanospheres,
Microchimica Acta, 2017
Two new adsorbents were synthesized by covalently grafting 2,3-Bis(2-formylphenoxy)-propan-1-ol (... more Two new adsorbents were synthesized by covalently grafting 2,3-Bis(2-formylphenoxy)-propan-1-ol (BH) onto the surface of silica-coated magnetic nanoparticles and silica gel by a conventional method and a vice-versa method. The morphology and properties of the adsorbents were characterized by FT-IR, XRD, SEM, TEM, VSM, TGA, UV-Vis, Optical microscope and DLS. The materials are shown to be effective adsorbents for the selective extraction of the ions of Au(III), Pd(II) and Ag(I) from aqueous mixed metal ions solution also containing Cu(II), Co(II), Ni(II), Zn(II) and Pb(II). Syringe and batch techniques are compared. The ions can be desorbed with 0.5 M HCl and quantified by FAAS. The maximum adsorption capacity of the MN-Si-NH 2-BH and Si-NH 2-BH were determined to be 257, 197 mg•g −1 for Au(III), 311, 191 mg•g −1 for Ag(I) and 301, 222 mg•g −1 for Pd(II), respectively. The detection limits (for n = 15 and at an S/N ratio of 2 blank standard deviations) are 0.12, 0.28, and 0.17 μg•L −1 for Au(III), Pd(II) and Ag(I), respectively.
In 2020 in the U.S alone over 40 million tons of food were wasted. Part of this waste is attribut... more In 2020 in the U.S alone over 40 million tons of food were wasted. Part of this waste is attributed to discarded fruits and vegetables and equals 7% of croplands’ yearly production. Reducing food waste can be an important factor in improving environmental and social sustainability. Lack or inadequate, knowledge of food preparation, storage, and cooking has contributed to this loss. One method of reducing food wastes is decreasing the amount of waste in households by using nutrition education intervention interventions such as training local communities to improve their cooking skills and general food storage and preparation knowledge. Consumers will also be more environmentally and economically sustainable, with less food waste in each household. The objective of this study is to prepare a report that can be used for developing nutrition education guidelines for nutrition educators, with the ultimate goal being to increase the knowledge of local residents to create a more sustainabl...
RSC Adv., 2015
In this study, new silica-coated magnetic nanoparticles modified with bisaldehyde (BISA–APTSCMNPs... more In this study, new silica-coated magnetic nanoparticles modified with bisaldehyde (BISA–APTSCMNPs) were synthesized using a normal method and a vice versa method.
Analytical and Bioanalytical Chemistry
Journal of Magnetism and Magnetic Materials