Sara Sobhani

Sara Sobhani
University of Birjand · Department of Chemistry

PhD

About

109
Publications
11,516
Reads
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2,720
Citations
Citations since 2016
36 Research Items
1521 Citations
2016201720182019202020212022050100150200250300
2016201720182019202020212022050100150200250300
2016201720182019202020212022050100150200250300
2016201720182019202020212022050100150200250300
Additional affiliations
January 2006 - February 2021
University of Birjand
Position
  • Professor (Full)

Publications

Publications (109)
Article
Full-text available
In this study, a new solar light-driven magnetic heterogeneous photocatalyst, denoted as ZnO/NiFe 2 O 4 /Co 3 O 4 , is successfully prepared. FT-IR, XPS, XRD, VSM, DRS, FESEM, TEM, EDS, elemental mapping, and ICP analysis are accomplished for full characterization of this catalyst. FESEM and TEM analyses of the photocatalyt clearly affirm the forma...
Article
Full-text available
Pd–N-heterocyclic carbine complex immobilized on magnetic nanoparticles is synthesized and characterized by different techniques such as FT-IR, XPS, TEM, EDX, FESEM, VSM, TGA, and ICP. The synthesized catalyst was used as a new water dispersible heterogeneous catalyst in the fluoride-free Hiyama, Suzuki–Miyaura and cyanation reactions in pure water...
Article
Full-text available
In this study, ZnCo2O4/g-C3N4/Cu is synthesized as a new and highly effectual solar light-driven heterogeneous photocatalyst. The prepared photocatalyst is characterized using FT-IR, XRD, XPS, DRS, FESEM, TEM, EDS, and elemental mapping techniques. The performance of ZnCo2O4/g-C3N4/Cu is studied towards the metronidazole (MNZ) degradation under sol...
Article
Full-text available
A novel base-metal multifunctional nanomagnetic catalyst is prepared by the immobilization of tungstate anions onto γ-Fe2O3 supported with imidazolium moieties. The (γ-Fe2O3-Im-Py)2WO4 was fully characterized using FT-IR, XPS, TEM, FESEM, ICP, TGA, VSM and XRD and used as a multifunctional heterogeneous catalyst for the synthesis of 2-amino-3-cyano...
Article
Full-text available
A Pd‑Co bimetallic alloy encapsulated in melamine‑based dendrimer supported on magnetic nanoparticles denoted as γ‑Fe2O3@MBD/Pd‑Co was synthesized by a facile co‑complexation‑reduction method and characterized sufficiently. The catalytic evaluation of γ‑Fe2O3@MBD/Pd‑Co showed promising results in the Mizoroki–Heck and Buchwald–Hartwig amination rea...
Article
Full-text available
A direct imination reaction was developed by tandem reaction of alcohols and nitro compounds in the presence of Cu-isatin Schiff base-γ-Fe2O3 as a nanomagnetically recyclable catalyst under solvent-free conditions. By this method, various imines were prepared in good to high yields from one-pot reaction of various alcohols (primary aromatic and ali...
Article
Homocoupling reactions promoted by photocatalysts are not very abundant in the literature. However, the products generated from such processes are very interesting. In this review, we highlight the most relevant reports concerning photocatalyzed dimerizations covering the literature until the middle of 2020. Reactions will be classified according t...
Preprint
Full-text available
A Pd-Co bimetallic alloy encapsulated in melamine-based dendrimer supported on magnetic nanoparticles denoted as γ-Fe2O3@MBD/Pd-Co was synthesized by a facile co-complexation-reduction method and characterized sufficiently. The catalytic evaluation of γ-Fe2O3@MBD/Pd-Co showed promising results in the Mizoroki-Heck and Buchwald-Hartwig amination rea...
Article
Full-text available
A metal-organic framework functionalized with cobalt-complex is prepared via post-synthetic modification of Fe-MIL-101-NH2. Initially, Fe-MIL-101-NH2 reacted with isatin to produce Fe-MIL-101-isatin-Schiff-base, which can anchor the cobalt by the addition of...
Article
In the last decades, the use of magnetic nanocomposites as a catalyst was considered for removal of organic pollutants due to its easy separation. Therefore, initially, TiO2@ZnFe2O4/Pd nanocomposite was prepared and then used in the photodegradation of diclofenac under direct solar irradiation in the batch and continuous systems. The structure, mor...
Article
A magnetically separable g‐C3N4/γ‐Fe2O3/TiO2 nanocomposite is synthesized as an intensely effectual visible‐light‐driven photocatalyst. It is fully characterized by FT‐IR, XPS, XRD, VSM, DRS, SEM, TEM, BET, EDS, and elemental mapping techniques. Based on the Tauc plot of (αhν)2 vs. hυ, the value of band gap energy for g‐C3N4/γ‐Fe2O3/TiO2 is estimat...
Article
Cobalt nanoparticles immobilized on magnetic chitosan (Fe3O4@CS-Co) have been prepared. They were identified using various techniques such as Fourier-transform infrared spectroscopy, X-ray diffraction, field emission scanning electron microscopy, energy-dispersive X-ray spectroscopy, transmission electron microscopy, thermogravimetric analysis, vib...
Article
The immobilized piperazine on the surface of graphene oxide (piperazine-GO) is synthesized and characterized by different methods such as FT-IR, solid-state 29Si{1H} and 13C{1H} CP/MAS NMR, elemental analysis, TGA, TEM, FE-SEM, XPS, and TPD. Subsequently, it is used as a heterogeneous bifunctional acid-base catalyst for the efficient multicomponent...
Article
In this paper, a new visible-light harvesting photocatalyst denoted as g-C3N4/-Fe2O3/TiO2/Pd was successfully fabricated and fully characterized by different techniques including FT-IR, XPS, XRD, TEM, SEM, elemental mapping, VSM, DRS, and ICP analysis. The as-prepared catalyst was utilized as an efficient magnetically separable photocatalyst in th...
Article
In this study, naproxen degradation examined using a photocatalytic method under the sunlight and UV light via ZnFe2O4@TiO2/Cu nanocomposite in the batch, continuous and large scale systems. ZnFe2O4@TiO2/Cu nanocomposite was prepared using Solvothermal method, and structure, morphology, and size of the nanoparticles was determined using XRD, VSM, F...
Article
A hydrophilic heterogeneous cobalt catalyst of chitosan, denoted as mTEG-CS-Co-Schiff-base, has been successfully prepared. This newly synthesized catalyst was characterized by different methods such as XRD, FE-SEM, TEM, TGA, FT-IR, 13C {1H} CP/MAS NMR, XPS and ICP analyses. The catalyst displayed excellent activity for the palladium and fluoride-f...
Article
A novel water-dispersible magnetically recyclable Pd heterogeneous catalyst, denoted as Pd--Fe2O3-2-ATP-TEG-MME, was initially synthesized and then characterized by diverse methods such as FT-IR, TEM, TGA, XPS, VSM, ICP and elemental analysis. The new catalyst was utilizsed as a water-dispersible/magnetically separable Pd heterogeneous catalyst fo...
Article
In present study a magnetic dispersive micro-solid-phase extraction method (MD-μ-SPE) based imino-pyridine immobilized on iron oxide (γ-Fe2O3) as an efficient sorbent was developed for preconcentration and quantification trace amount of Rhodamine B in food and cosmetic products samples. The sorbent due to its high surface area, excellent adsorption...
Article
Sewage output contains a wide range of organic materials, such as pharmaceutical compounds. These compounds have harmful effects on the environment, such as generation of antibiotic-resistant bacteria; therefore, their degradation has been considered as one of the environmental challenges. The purpose of this research is to synthesize graphene rein...
Article
Full-text available
In this work, synthesis of Pd–NHC-g-Fe2O3-n-butyl-SO3H and its activity as a bifunctional heterogeneous nanocatalyst containing Pd–NHC and acidic functional groups, are described. This newly synthesized nanomagnetic catalyst is fully characterized by different methods such as FT-IR, XPS, TEM, VSM, ICP and TG analysis. At first, the catalytic activi...
Article
In this paper, 2-hydroxyethylammonium acetate (2-HEAA) was used as the first functionalized ionic liquid for the facile, economical and environmentally friendly synthesis of Fe3O4 nanoparticles by a co-precipitation method. The synthesized Fe3O4 nanoparticles were used as solid material for supporting 2-HEAA (Fe3O4-2-HEAA). The newly prepared Fe3O4...
Article
This research focuses on removing Direct Blue 71 (DB 71) from aqueous solution in an efficient and very fast route by ionic liquid mediated γ-Fe2O3 magnetic ionomer. 2-hydroxyethylammonium sulphonate immobilized on γ-Fe2O3 nanoparticles (γ-Fe2O3-2-HEAS) was used for this purpose. The influence of shaking time, medium pH, the concentration of sorben...
Article
In this paper, palladium-DABCO complex supported on magnetic nanoparticles was successfully used as a new magnetically recoverable heterogeneous catalyst for the synthesis of arylphosphonates via P-arylation of different types of aryl halides (aryl iodides/bromides/chlorides and benzene boronic acid/sulfonate), with phosphite esters (triethyl/triph...
Article
Full-text available
The presence of Arsenic in drinking water is the greatest threat to health effects especially in water. The purpose of this study is application of green palladium nanoparticles for removal of trivalent Arsenic from aqueous solutions and also the impact of some factors such as retention time, pH, concentration of palladium nanoparticles and Arsenic...
Article
In this paper, tris(hydroxymethyl)methylene ammonium acetate supported on GO as a new multifunctional heterogeneous catalyst was synthesized. After its characterization by different techniques such as FT-IR, TEM, FESEM, EDS, XPS, solid-state MAS NMR and elemental analysis, it was used as an efficient catalyst for the synthesis of hexahydroquinoline...
Article
A novel hydrophobic copper complex supported on γ-Fe2O3 is synthesized and characterized by different methods such as FT-IR, XRD, TEM, SEM, TGA, VSM, ICP and CHN analysis. It was used as a magnetically recyclable heterogeneous catalyst for the efficient synthesis of α-aminophosphonates via a one-pot three-component reaction under solvent-free condi...
Article
In this work, immobilized lanthanum (III) triflate on graphene oxide as a new multifunctional heterogeneous catalyst has been synthesized. The structure of immobilized lanthanum (III) triflate on amine grafted graphene oxide [La(OTf)2-grafted-GO] was established by FT-IR, XPS and solid-state 13C MAS NMR. The morphology and distribution of elements...
Article
Full-text available
Correction for ‘Pd complex of an NNN pincer ligand supported on γ-Fe2O3@SiO2 magnetic nanoparticles: a new catalyst for Heck, Suzuki and Sonogashira coupling reactions’ by Sara Sobhani et al., New J. Chem., 2015, 39, 7076–7085.
Article
Cu-isatin Schiff base supported on γ-Fe2O3 as a new catalyst was synthesized and characterized by different methods such as SEM, TEM, XRD, TGA, FT-IR, ICP, VSM and CHN analysis. It was used as a reusable heterogeneous catalyst for the efficient synthesis of bis(indolyl)methanes (TON = 320–392) and bis(pyrazolyl)methanes (TON = 340–388) in aqueous m...
Article
Pyridine grafted graphene oxide (Py-GO) as an acid-base bifunctional catalyst was found to show cooperative catalysis in the one-pot synthesis of vinylphosphonates. In the presence of this catalyst, a variety of vinylphosphonates were synthesized by the reaction of different aldehydes (aryl, heteroaryl and alkyl aldehydes), phosphite esters and nit...
Article
A palladium-Schiff base complex immobilized covalently on γ-Fe2O3 (Pd-imino-Py-γ-Fe2O3) was synthesized and characterized by different methods such as XRD (X-ray diffraction), SEM (scanning electron microscopy), TEM (transmission electron microscopy), FT-IR (Fourier transform infrared spectroscopy), TGA (thermogravimetric analysis), ICP (inductivel...
Conference Paper
We describe a study of electro-absorption effects in high quality 1300nm InAs/GaAs quantum dot (QD) material grown by molecular beam epitaxy. The photocurrent spectra as a function of electric field is investigated and the quantum confined Stark shift of the QD states is compared to reports for various quantum well (QW) systems (GaAs/AlGaAs, InGaAs...
Article
Full-text available
A new palladium-Schiff base complex immobilized covalently on magnetic nanoparticles (Pd-imino-Py-γ-Fe2O3) was synthesized via the reaction of chloro-functionalized γ-Fe2O3 with iminopyridine followed by the reaction with palladium acetate. Characterization of Pd-imino-Py-γ-Fe2O3 was carried out by various techniques such as XRD, SEM, TEM, FT-IR, T...
Article
2-Hydroxyethylammonium sulfonate immobilized on γ-Fe2O3 nanoparticles (γ-Fe2O3-2-HEAS) was synthesized by the reaction of n-butylsulfonated γ-Fe2O3 with ethanolamine. The structure of the resulting product was confirmed by fourier transform infrared (FT-IR) spectra, X-ray diffraction (XRD) spectrometry, transmission electron microscopy (TEM), therm...
Article
A new acid-base bifunctional catalyst was synthesized by postgrafting of pyridine onto GO. This new catalyst was characterized by different methods such as FT-IR, XRD, TGA, TEM, SEM, EDS, UV-Vis and elemental analysis and employed as a reusable acid-base bifunctional catalyst for the one-pot synthesis of β-phosphonomalonates via a cascade Knoevenag...
Article
In this study, a Pd complex of bis(imino)pyridine as an NNN pincer ligand supported on γ-Fe2O3@SiO2 magnetic nanoparticles (Pd-BIP-γ-Fe2O3@SiO2) was synthesized and characterized by SEM, TEM, FT-IR, TGA, ICP, XRD, XPS, VSM and elemental analysis. The synthesized catalyst was used successfully as a new air- and moisture-stable phosphine-free Pd cata...
Article
A Pd-isatin Schiff base complex immobilized on γ-Fe2O3 (Pd-isatin Schiff base-γ-Fe2O3) was synthesized and characterized by Fourier transform infrared, scanning electron microscopy, high resolution transmission electron microscopy, X-ray diffraction, thermogravimetric gravimetric analysis, inductively-coupled plasma, X-ray photoelectron spectroscop...
Article
Full-text available
A Pd complex of a NNN pincer ligand supported on γ-Fe2O3@SiO2 as a new phosphine-free Pd catalyst was synthesized and characterized by different methods such as SEM, TEM, FT-IR, TGA, ICP, XRD, XPS and elemental analysis. The synthesized catalyst was successfully used as the first magnetically recoverable heterogeneous catalyst for the synthesis of...
Article
A new heterogeneous palladium complex of 2-aminothiophenol supported on nanomagnetic γ-Fe2O3 was synthesized and characterized using various methods. The catalyst was used as a magnetically recoverable heterogeneous palladium catalyst for phosphonation reactions via C-P bond formation. Using this method, a wide range of electrophilic benzenes was c...
Article
In this paper, supported phosphoric acid on silica coated magnetic nanoparticles (gamma-Fe2O3@SiO2-PA) was synthesized as a new solid acid via the reaction of chloro-functionalized gamma-Fe2O3@SiO2 with triethyl phosphite followed by hydrolysis. The synthesized gamma-Fe2O3@SiO2-PA was characterized by SEM, HRTEM, BET, FT-IR, TGA, ICP and VSM. It wa...
Article
A new palladium-Schiff base complex immobilized on iron oxide nanoparticles (gamma-Fe2O3-acetamidine-Pd) was synthesized via the reaction of amino-functionalized gamma-Fe2O3 with acetamide followed by the reaction with palladium acetate. Characterization of gamma-Fe2O3-acetamidine-Pd was carried out by various techniques such as XRD, SEM, HRTEM, FT...
Article
Piperidine and piperazine immobilized on silica-coated γ-Fe2O3 magnetic nanoparticles were synthesized as new supported bases via the reaction of chloro-functionalized γ-Fe2O3@SiO2 with piperidine and piperazine, respectively. The resulting bases were employed as magnetically recyclable heterogeneous catalysts for the efficient one-pot three-compon...
Article
In this paper, palladium-DABCO complex supported on gamma-Fe2O3 magnetic nanoparticles (Pd-DABCO-gamma-Fe2O3) was synthesized and characterized by HRTEM, SEM, XRD, XPS, ICP, FT-IR, TGA, VSM and elemental analysis. The synthesized catalyst was successfully applied as a new magnetically recyclable heterogeneous catalyst in Mizoroki-Heck cross-couplin...
Article
Title compounds (IV) are synthesized through tandem Knoevenagel—phospha—Michael reaction.
Article
Lanthanum(III) triflate supported on nanomagnetic gamma-Fe2O3 was synthesized and characterized by HRTEM, XRD, ICP, FT-IR, TGA and VSM. It was applied as a magnetically recyclable heterogeneous Lewis acid catalyst for the efficient one-pot synthesis of beta-phosphonomalonates via tandem Knoevenagelphospha- Michael reaction. The catalyst was easily...
Article
Full-text available
A one-pot procedure has been developed for the synthesis of -phosphonomalonates via P-C bond formation through tandem Knoevenagel-phospha-Michael reaction catalyzed by iodine as a new, inexpensive, nonmetallic, and commercially available catalyst. [Supplementary materials are available for this article. Go to the publisher's online edition of Synth...
Article
Applied Catalysis A: General j o u r n a l h o m e p a g e : w w w . e l s e v i e r . c o m / l o c a t e / a p c a t a Ionic liquid immobilized on ␥-Fe 2 O 3 nanoparticles: A new magnetically recyclable heterogeneous catalyst for one-pot three-component synthesis of 2-amino-3, 5-dicarbonitrile-6-thio-pyridines a b s t r a c t 2-Hydroxyethylammoni...
Article
Nano n-propylsulphonated γ-Fe2O3 (NPS-γ-Fe2O3) was applied as a new magnetically recyclable heterogeneous catalyst for the efficient one-pot synthesis of bis(pyrazolyl)methanes in water. The catalyst was easily isolated from the reaction mixture by a magnetic bar and reused at least five times without significant degradation in activity. Graphical...
Article
Title compounds (III) are prepared by one-pot tandem Knoevenagel—Michael reaction of pyrazolone (I) with various aldehydes (II) in the presence of hydroxyethylammonium acetate as a task-specific ionic liquid.
Article
Silica-bonded 2-hydroxyethylammonium acetate was synthesized easily by the reaction of 3-chloropropylsilica with ethanolamine followed by ion exchange with acetate. It was used as a heterogeneous, re-usable, efficient and easy to handle catalyst for the one-pot synthesis of a variety of 2-Amino-4H-chromen-4-yl phosphonates and β-phosphonomalonates...
Article
Full-text available
Nano n-propylsulfonated γ-Fe2O3 (NPS-γ-Fe2O3) was used as a new magnetically recyclable heterogeneous catalyst for the efficient synthesis of indole derivatives, such as 2-indolyl-1-nitroalkanes and bis(indolyl)methanes.
Article
Nano γ-Fe2O3-pyridine based catalyst as a new magnetically recyclable heterogeneous organic base was synthesized. The synthesized odorless pyridine based catalyst was used as a new catalyst for the efficient synthesis of β-phosphonomalonates by the reaction of diethyl phosphite with α,β-unsaturated malonates. The catalyst was easily isolated from t...
Article
2-Hydroxyethylammonium acetate (2-HEAA) as a task-specific ionic liquid, efficiently promotes one-pot three-component reaction of aryl/heteroaryl/alkyl aldehydes with aryl/alkyl thiols and malononitrile at room temperature. This protocol offers several advantages such as using a reusable and cost-effective ionic liquid, being amenable to scale-up a...
Article
A convenient and practical method for the one-pot, three-component synthesis of terminal vinylphosphonates from readily available starting materials (aryl/alkyl/heteroaryl aldehydes, nitromethane and trialkylphosphites) through a tandem Henry–­Michael reaction followed by nitro elimination in the presence of 5-hydroxypentylammonium acetate (5-HPAA)...
Article
3-Aminopropylated silica gel is introduced as an efficient, reusable, and thermally stable heterogeneous catalyst for tandem Knoevenagel–Michael reaction of 1-phenyl-3-methyl-5-pyrazolone with aldehydes. Short reaction times, mild reaction conditions, ease of recovery, and catalyst reusability make this method a new, economical, and waste-free chem...
Article
5-Hydroxypentylammonium acetate as a task-specific ionic liquid promotes efficient tandem Knoevenagel-phospha-Michael reaction of phosphite esters with aryl/heteroaryl/alkyl/salicylaldehydes and malonitrile/ethyl cyanoacetate at room temperature in short reaction times. This simple procedure allows a series of β-phosphonomalonates and 4-substituted...
Article
A new and convenient method for the synthesis of bis(pyrazolyl)methanes by one-pot tandem Knoevenagel– Michael reaction of 3-methyl-1-phenyl-5-pyrazolone with aryl, heteroaryl, or alkyl aldehydes in the presence of 2-hydroxyethylammonium acetate (2-HEAA) as a task-specific ionic liquid is described. This method was also successfully applied for the...
Article
Full-text available
Sulfonated multiwalled carbon nanotubes (MWCNTs) were synthesized by chemical vapor deposition (CVD) as a new and facile one-pot method using acetylene (as the CNT precursor), thiophene (as the sulfur precursor), and ferrocene (for in situ liberation of metal nanoparticles as the CNT nanocatalyst). A low catalytic amount of the resulting sulfonated...
Article
The novel catalyst allows chemoselective formylation of amines in the presence of alcohols and hydroxyl functionalities, respectively.
Article
A new method for the efficient synthesis of aldehydes, ketones, and oxophosphonates from various types of amines (primary and secondary) and aminophosphonates via oxidative deamination by nicotinium dichromate (=3-carboxypyridinium dichromate; NDC) is described.
Article
Phosphomolybdic acid (H3PMo12O40) is an efficient and reusable catalyst for the synthesis of the phospha-Michael addition of phosphite esters with different types of α,β-unsaturated malonates to produce a variety of β-phosphono malonates.
Article
Nano n-propylsulfonated γ-Fe2O3 as a new sulfonated nanomagnetic iron oxide was synthesized directly through ring opening reaction of 1,3-propanesultone with nano magnetic γ-Fe2O3 and used as magnetically recyclable heterogeneous catalyst for the efficient one-pot synthesis of β-phosphonomalonates. The catalyst was easily isolated from the reaction...
Article
3-Aminopropylated silica gel, which is prepared from commercially available and cheap starting materials, is introduced as an efficient and recyclable catalyst for the phospha-Michael addition of phosphorus nucleophiles to α,β-unsaturated malonates. Short reaction times, mild reaction conditions, ease of recovery and catalyst reusability make this...
Article
A new, one-pot convenient method for the synthesis of a variety of β-phosphonomalonates by a tandem Knoevenagel–phospha-Michael reaction of phosphite esters with aryl/heteroaryl/alkyl aldehydes and malonitrile in an aqueous micellar solution of sodium stearate is described. This method offers several advantages, such as using a cheap and environmen...
Article
A simple procedure is developed for the chemoselective oxidation of aryl and alkyl thiols providing thiosulfonates in high yields.
Article
Full-text available
A novel method for the rapid and efficient conversion of a variety of α-aminophosphonates to α-ketophosphonates using ZnCr 2 O 7 3H 2 O via oxidative deamination under solvent-free conditions at room temperature is described. This method is also applicable to the rapid and highly selective oxidation of various types of ordinary amines (primary and...
Article
Full-text available
Thieme LETTER 319 Zinc Dichromate Trihydrate (ZnCr 2 O 7 ⋅3H 2 O) as an Efficient Reagent for the One-Pot Synthesis of Thiosulfonates from Thiols O n e -P o t S y n t h e s i s o f T h i o s u l f o n a t e s Abstract: ZnCr 2 O 7 ·3H 2 O is a readily available and efficient re-agent for the one-pot synthesis of a variety of thiosulfonates by chemos...