Alireza Feizbakhsh

Islamic Azad University | IAU · Department of Chemistry

This work proposed the developed of thermo‐sensitive and magnetic molecularly imprinted polymer for the extraction of omeprazole from the human urine and pharmaceutical samples. The ethylene glycol dimethacrylate and N, N′‐methylenediacrylamide were used as the cross‐linkers, poly (N‐vinylcaprolactam) as a thermo‐sensitive monomer, and omeprazole a...

The novel FeS2/ZnO nanocomposites was synthesised by a chemical precipitation rout. The optical and structure properties of the synthesised catalysts were characterised by X-ray diffraction, energy-dispersive X-ray, field emission scanning electron microscopy, and UV-visible spectroscopy. The photo efficiency of the synthesised catalysts were inves...

The scope of this project was to synthesis a ZnO-Cr2O3 for selective imatinib removal. Molecular imprinting was used to prepare polymerisation using ZnO-Cr2O3 with tetraethyl orthosilicate and 3-ammonia propyl triethoxysilane as the cross-linker and recognition sites for removal of imatinib compound. The ZnO-Cr2O3/MIP powders were characterised by...

Background Over 300 tonnes of gold utilised in electronics devices every year, end-of-life electronic equipment offers an crucial recycling potential for secondary gold supply. Electronic boards are among common and exploitable sources of gold that are widely used in various industry. The aims of this paper is to use gold element of electronic boar...

In this research, we report a low-cost and simple synthesis of a Fe3O4-MoS2 core-shell grafted with poly (N-vinylcaprolactam) as a photothermal nanocarrier. The as-prepared nanocarrier exhibits a nanoscale size (70 nm), maximum adsorption capacity (qmax = 3.19 mg g⁻¹), and excellent photothermal characteristics. The release profile was investigated...

Adulteration has been one of the most significant global concerns in the field of infant formula quality control. Proteins and long-chain polyunsaturated fatty acid (LCPUFA) are the most important nutrients in the premature infant formula powder (PIFP), so that insufficient amounts of them may restrict proper growth and development. Rice flour (RF)...

Recently, drug delivery systems have drawn significant interest from many researchers. In this work, the five generations of thermo‐sensitive dendrimer based on magnetic MoS2 was synthesized and used for cisplatin drug delivery. The affected important parameters such as pH, contact time, and adsorption/desorption temperature were investigated. The...

In this work, five generations of dendrimers were grafted to magnetic nanoparticles; then, polyethylene glycol was used to modify dendrimers. The structure and morphology are systemically studied by Fourier transform infrared spectroscopy (FT‐IR), vibrating sample magnetometer (VSM), thermogravimetric analysis (TGA), energy‐dispersive X‐ray spectro...

In the present study, dispersive micro solid-phase extraction (DMSPE) integrated with electrothermal atomic absorption spectrometry (ETAAS) as a novel method was proposed for the simultaneous analysis of cadmium and chromium in bean samples. In this method, strontium hexaferrite (SrFe12O19) modified by cetyltrimethylammonium bromide (CTAB) along wi...

To plan great photocatalytic performance, fast photo-generated charge recombination in nanocatalysts should be repressed. Thus, copper sulphide-Zirconium dioxide (CuS-ZrO2) nanocomposites were synthesised via a facile chemical method. The field-emission scanning electron microscopy (FESEM) results indicated that a heterojunctions interface among Cu...

An improved deep eutectic solvent (DES)-based headspace single-drop microextraction procedure has been developed as a green procedure for gas chromatography-mass spectrometric analysis of polycyclic aromatic hydrocarbons (PAHs) in aqueous samples. The stability of the micro-drop was significantly improved using a DES as an extraction phase and a be...

The centrifuge-less dispersive liquid-liquid microextraction (DLLME) technique was used to separate selenium species in aqueous samples. According to the salting-out effect, a simple approach was used to eliminate the centrifugation step. The optimization of the independent variables was performed using chemometric methods. Under optimal conditions...

In this project, ZnTe quantum dots (QDs) on multi-walled carbon nanotubes (MWCNTs) by applying a facile and solvothermal method and characterized the various analysis material such as X-ray diffraction, dynamic light scattering, scanning electron microscopy, ultraviolet–visible spectroscopy. The outcomes indicated that the ZnTe QDs supported on MWC...

Fe3O4 and Ag2O nanoparticles have good bio-compatibility and chemical stability properties, the possibility of these nanomaterials could be applied as a carrier in anti-cancer drug delivery system. In this project, Curcumin, an anti-cancer compound drug, loaded on Ag2O–Fe3O4/carboxymethyl chitosan–methyl cellulose (Ag2O–Fe3O4/CMCS–MCS) was studied...

Photodegradation of ampicillin (AMP) over illuminated Ag2Te/ZnTe was investigated with the influence of physico-chemical attributes of the nano-catalyst. The Ag2Te content was increased in the hybrid catalyst. The photodegradation performance was enhanced due to decrease in the band gap of the catalyst. This was further enhanced by adding Ag2Te to...

The ZrO2 and MnS2-ZrO2 nanocomposites decorated on multi-walled carbon nanotubes (MWCNTs) were prepared by sol-gel process. The prepared catalysts were characterised for the evaluation of various structural properties. UV–vis spectroscopic techniques showed enhanced absorption intensity. The band gap of catalyst is reduced by the addition of MnS2 a...

Highly dispersed 15.0 wt% cobalt catalysts were prepared on γ-Al2O3, carbon nanotubes (CNTs), and graphene nanosheet (GNS) using chemical vapor deposition (CVD) procedure. The physico-chemical properties of the catalysts were studied by inductively coupled plasma (ICP), Brunauer–Emmett–Teller (BET), X-ray powder diffraction (XRD), field-emission sc...

In this study, Novel NiO-CuS nanocomposites were prepared by simple chemical method. The goal of this project was to apply the Letrozole (Anti-estrogen drug) template molecularly imprinted polymer (MIP) for the selective removal of Letrozole from aqueous samples. The NiO-CuS nanocomposites and NiO-CuS/MIP nanocomposites were specified by field emis...

In this project, Cu²⁺ doped on ZnS quantum dots (QDs)/MWCNTs nanocomposites and undoped samples were provided by chemical method and several techniques by photoluminescence (PL) spectroscopy, X-ray diffraction powder (XRD), Brunauer–Emmett–Teller (BET), scanning electron microscopy with field emission (FESEM), Energy dispersive X-ray (EDS), Dynamic...

Background: DLLME combined with UV–Vis spectrophotometry was developed for pre-concentration, microextraction and determination of selenium in aqueous samples. different analytical method [1] [2] were used for determination of selenium. Methods: The experiments were performed using Se (IV) in a vial and DAB solution was added. the pH was adjusted a...

Silver doped cadmium sulfide as quantum dots/multi walled carbon nanotubes composites were prepared by chemical methods. The prepared nano-samples were characterized by photoluminescence (PL) and UV–Vis spectroscopy, field emission-SEM, Dynamic light scattering (DLS), Brunauer–Emmett–Teller (BET), and X-ray diffraction (XRD). The DLS result of as-p...

In the present work, The SiO2, and CoS2–SiO2 nanomaterials and incorporated on chitosan was developed as photocatalyst for photocatalytic degradation of toxic compound such as ethidium bromide as a hazard mutagenic pollutant. The SiO2, and CoS2–SiO2 nanomaterials were prepared using the sol–gel/sonochemical method. Therefore, the nano photocatalyst...

Iron sulfide (FeS2) quantum dots (QDs) on tin dioxide (SnO2) anchored multi-walled carbon nanotubes (MWCNTs) as a new photocatalysts were prepared by simple precipitation method. The prepared catalyst was characterized by Dynamic light scattering (DLS), X-ray diffraction (XRD), UV–visible spectroscopy, and field emission scanning electron microscop...

A centrifugation-free dispersive liquid–liquid microextraction based on the solidification of a hydrophobic deep eutectic solvent combined with UV–Vis spectrophotometry has been developed for the speciation of selenium in aqueous samples. In this study, the centrifugation step was omitted by applying salting-out phenomenon. The influence of main va...

Herein, ZnS quantum dots on MnS2 (ZnS/MnS2) nanoparticles. Was prepared via the facile and simple method. The ZnS/MnS2 nanocomposites were characterized into attained optical, morphological, structural, and surface attributes using different analytical routs. The average crystallite size of MnS2 and ZnS/MnS2 nanocomposites are 27.2 and 14.8 nm via...

Magnetic nanoparticles (MNPs) modified with organic dendrimers are shown to be a viable sorbent of the microextraction of the drug rosuvastatin (RST; also known as Crestor). The MNPs were prepared from iron(II) chloride and iron(III) chloride and then coated with silicon dioxide. The coated MNPs produced by this method have diameters ranging from 1...

In this study, a novel solid phase microextraction fiber coating based on polyamide-graphene oxide nanocomposite was prepared using electrospinning technique on stainless steel wire as a robust substrate. Scanning electron microscopy images showed high porosity of the synthesized polyamide-graphene oxide nanocomposite and the diameter of nanofibers...

A new high capacity sorbent for preconcentration and determination of nickel in environmental samples was synthesized. The sorbent was synthesized by copolymerization of allyl glaycidyl ether / imminodiacetic acid with N,N-dimethylacrylamide as functional monomers in the presence of N,N-bismethylenacryl amid as cross linker and characterized by Fou...

Quantitative analysis of cadmium in environmental samples was achieved with a polymeric sorbent synthesized by copolymerization of N,N-dimethylacrylamide and allyl glycidyl ether/iminodiacetic acid as chelating monomers with N,N′-methylenebisacrylamide as cross-linker. The polymer was characterized by Fourier transform infrared spectroscopy, thermo...

A new chelating resin is produced by coupling a dye brilliant green to Amberlite XAD-2 through an azo spacer. The resulting resin has been characterized by FT-IR, elemental analysis, thermogravimetric analysis, and scanning electron microscopy and studied for the preconcentration and determination of trace Al(III) from solution samples. The optimum...

The chemical composition of essential oil of Cyperus rotundus L. grown in Iran was studied by hydrodistillation and GC and GC-MS. Analysis of the chemical composition of the oil showed the predominance of sesquiterpene compounds, with the presence of monoterpenes. Twenty-two compounds were identified from oil of C. rotundus, of which cyperene (37.9...

We have developed a modified method for the extraction and preconcentration of benzene, toluene, ethylbenzene and xylenes (BTEX) in aqueous samples. It based on dispersive liquid-liquid microextraction along with solidification of floating organic microdrops. The dispersion of microvolumes of an extracting solvent into the aqueous occurs without di...

In this investigated the concentration of the heavy metals such as lead, mercury, cadmium, nickel and arsenic in the liver tissue of fish Pomadasys Kaakan caught from the Persian Gulf were studied. Determine the concentrations of heavy metals in liver of fish samples were prepared by atomic absorption model (varian vists mpx) was: 1. As = 0.05(ppm)...

In this project, Sangsar is the scientific name of Pomadasys Kaakan. The liver oil of the Pomadasys Kaakan for Blight and Dyer extraction method was extracted due to oxidation off at sin the liver being minimal. The fat content of the liver tissue was extracted with chloroform and then with n-butanol was isolated from liver tissue of polar material...

A new polymeric sorbent is prepared by coupling Amberlite XAD-4 with phenol through an azo spacer, then modified by allyl bromide and characterized using FTIR, elemental analysis, and thermogravimetric analysis and evaluated for the preconcentration and determination of trace Pb(II) in human biological fluid and environmental water samples. The opt...

A simple and rapid dispersive liquid-liquid microextraction technique coupled with high performance liquid chromatography (HPLC) was developed for the extraction and analysis of gemfibrozil in drug matrix and biological fluids like human plasma and urine samples. In this method, carbon tetrachloride at microliter volume level and methanol were used...

A quantitative structure-retention relationships (QSRRs) method is employed to predict the retention time of 300 pesticide residues in animal tissues separated by gas chromatography-mass spectroscopy (GC-MS). Firstly, a six-parameter QSRR model was developed by means of multiple linear regression. The six molecular descriptors that were considered...

A drug imprinting polymer based on suspension polymerization was prepared with N,N-dimethylacrylamide and 1-(N,N-bis-carboxymethyl) amino-3-allylglycerol as functional monomers, N,N methylene diacrylamid as the cross-linker, naproxen as the template and 2,2'-azobis (2-methylbutyronitrile) as the initiator. The drug imprinted polymer was characteriz...

In this study we investigated the electrocatalytic oxidation of anti-inflammatory drug (paracetamol) on Nickel and Nickel–copper alloy modified glassy carbon electrodes (GC/Ni and GC/NiCu) in alkaline solution. These electrodes prepared by galvanostatic method and different electrochemical techniques such as cyclic voltammetry and chronoamperometry...

The investigation of the volatile compounds of essential oils of Eleocharis pauciflora (Light) Link and Eleocharis uniglumis (Link) J.A. Shultes by gas chromatography/mass spectrometry (GC/MS) led to the identification of 20 and 23 compounds, respectively. The presented essential oils were characterized by the abundance of sesquiterpene hydrocarbon...

The essential oils obtained by hydrodistillation of aerial part of Cyperus difformis L., and Cyperus arenarius Retz grown in Iran were analyzed by GC-MS. Analysis oils showed the predominance of sesquiterpenes compounds in addition to monoterpenes. Twenty-three components of C. arenarius and Twentynine components of C. difformis representing 87.8 %...

The compositions of the essential oil from cyperus conglomerates were obtained by hydrodistillation and analyzed by GC/MS (Gas chromatography/mass spectrometry). Twenty seven compounds were identified. Of which the cyperene (27.2%) was the major component. This is the first time that an oil of C. conglomerates has been found with cyperene as the ma...

The essential oils obtained by hydrodistillation of aerial part of S. littoralis and S. wardianus grown in Iran were analyzed by GC/MS. Twenty seven components of S. littoralis and S. wardianus representing 85.5% and 86% of the oils were identified respectively. The major components in both oils were cyperene and cyperotundone, representing 18.7% a...

A new chelating resin was prepared by coupling Amberlite XAD-2 with Brilliant Green through an azo spacer. The resulting resin has been characterized by FTIR spectrometry, elemental analysis, and thermogravimetric analysis and studied for the preconcentration and determination of trace Pb(II) ions from solution samples. The anionic complex of Pb(II...

In this work a numerical method, based on the use of spectrophotometric data coupled to PLS multivariate calibration, is reported for the simultaneous determination of furosemide (FUR) and atenolol (ATE) in synthetic samples and combined commercial tablets. The correlation coefficients (R2) and recovery range for ATE and FUR in synthetic mixtures w...

A new chelating resin is prepared by coupling Amberlite XAD-4 (Serva, Heidelberg, New York) with m-phenylendiamine through an azo spacer, characterized (by elemental analysis, infrared, and thermogravimetric analysis) and studied for preconcentrating nickel(II), cobalt(II), zinc(II), copper(II), and chromium(III) using flame atomic absorption spect...

Flavonoids are an interesting group of natural polyphenolic compounds that exhibit extensive bioactivities such as scavenging free radical, antitumor and antiproliferative effects. The anticancer and antiviral effects of these natural products are attributed to their potential biomedical applications. While flavonoids complexation with DNA is known...

The composition of the essential oils from the aerial parts of three Labiatae species of Iran: Teucrium persicum Boiss., Thymus caucasicus Willd. ex Ronniger subsp. grossheimii (Ronniger) Jalas. and Marrubium crassidens Boiss. obtained by hydrodistillation were analyzed by GC and GC/MS. epi-α-Cadinol (23.2%) and α-pinene (17.3%) were the main compo...

The diastereoselectivity of Diels-Alder reactions were studied on the silica surface supported with different concentrations of cerium ion as efficient Lewis acid catalysts under solvent-free conditions. The results showed that the diastereoselectivity of reaction was highly improved in these conditions. The cerium ion was grafted on silica surface...

The enzymatic hydrolysis of meso-1,7-diacetoxy-2,6-dimethylheptane 5, prepared from 2,6-dimethylhepta-1,6-diene 6, gave the (2S,6R)-7-acetoxy-2,6-dimethyl-1-heptanol 1, which was transformed to the (2R,6R)-2,6,10-trimethyl-1-undecanol 7. In this manner, the C 14 side chain of α-Tocopherol was synthesized from 2,6-dimethylhepta-1,6-diene 6 in only 5...

The oil obtained by hydrodistillation of the aerial parts of Satureja atropatana Bung., endemic in Iran, and S. mutica Fisch. et C.A. Mey. was analyzed by GC/MS. Thirty-seven compounds representing 99.3% of the oil of S. atropanata were identified, among them carvone (21.5%), menthol (18.1%), 1,8-cineol (13.1%), methyl chavicol (11.1%) and menthone...

A water-distilled oil from aerial parts of Euphorbia teheranica Boiss. was analyzed by GC/MS. The oil consisted mainly of sesquiterpenes, and a small percentage of monoterpenes and aliphatic compounds. Elemol (57.5%) was found to be the major constituent among the 24 compounds identified.

The hydrodistilled oil from the aerial parts of Chenopodium botrys L. collected from two different localities in Iran were analyzed by GC/MS. Thirty-five and 30 components were identified in the two oils representing 81.5% and 78.1%, respectively. The main components of the two oils were juniper camphor (16.5% and 25.7%), elemol (14.3% and 13.4%) a...

The constituents of the oil obtained by hydrodistillation of Stachys lavandulifolia Vahl. grown in Iran was analyzed using GC (retention indices) and GC/MS. Fifty-five compounds were observed, of which 44 could be identified. The major components found in the oil were α-pinene (20.1%), β-pinene (12.1%) and spathulenol (7.2%).

The essential oil of the aerial parts of Achillea albicaulis C.A. Mey. was analyzed by capillary GC and GC/MS. The major constituents were 1,8-cineole (10.1%), camphor (9.2%), germacrene D (7.8%), piperitone (6.2%), α-pinene (5.9%) and artemisia ketone (5.7%).

In this research, the nanoparticles of NiO were synthesised by the hydrolysis reaction of diferrent solutions of Nichel salts with ascorbic acid as a reductant reagent in low temperuture and without present of a surfactant. The reaction conditions such as temperature, mole ratio, pH, reaction time were optimized. The nanoparticles were characterise...