@article { author = {Miranzadeh, Marzieh and Kassaee, Mohammad Zaman and Sadeghi, Leila and Sadroddini, Mohsen and Razzaghi Kashani, Mehdi and Khoramabadi, Nima}, title = {Antibacterial ethylene propylene rubber impregnated with silver nanopowder: AgNP@EPR}, journal = {Nanochemistry Research}, volume = {1}, number = {1}, pages = {1-8}, year = {2016}, publisher = {Iranian Chemical Society}, issn = {2538-4279}, eissn = {2423-818X}, doi = {10.7508/ncr.2016.01.001}, abstract = {Following our interest in reaching for a molded rubber article with possible detergent contact applications, durable silver nanopowder (AgNP) is synthesized by arc discharge, then mixed with varying ratios of ethylene propylene rubber (EPR), affording novel AgNP@EPR nanocomposites. X-ray diffraction (XRD) patterns of AgNP as well as AgNP@EPR show no trace of impurity, while scanning electron microscopy (SEM) indicates an average diameter of 50 nm for the former. Transmission electron microscopy (TEM) images while confirm the SEM results, show quite a few 5 nm AgNP particles lying beside some micro crumbs. Our DC arc discharge technique involves explosion of movable silver anode and static cathode by a current pulse between 5 to 10 A cm-2. A solution blending method is employed for preparation of AgNP@EPR nanocomposites. The AgNP is first dispersed in toluene using an ultrasonic homogenizer, and then thoroughly mixed with EPR in the same solvent whose removal gives nanocomposites of 2, 4, 6 and 8 vol% AgNP in EPR,  showing strong antibacterial activity against both Escherichia coli and Staphylococcus aureus.}, keywords = {Antibacterial Activity,Arc discharge,Escherichia coli,Ethylene propylene rubber (EPR),Silver nanopowder,Staphylococcus aureus}, url = {http://www.nanochemres.org/article_11567.html}, eprint = {http://www.nanochemres.org/article_11567_786e5f229823253e5d3bbb0ec8ec9a70.pdf} } @article { author = {Momeni, Mohamad Mohsen and Hosseini, Mir Ghasem}, title = {Photo-electrocatalytic activity of TiO2 nanotubes prepared with two-step anodization and treated under UV light irradiation}, journal = {Nanochemistry Research}, volume = {1}, number = {1}, pages = {9-18}, year = {2016}, publisher = {Iranian Chemical Society}, issn = {2538-4279}, eissn = {2423-818X}, doi = {10.7508/ncr.2016.01.002}, abstract = {To improve the photo-catalytic degradation of salicylic acid, we reported the fabrication of ordered TiO2 nanotube arrays by a simple and effective two-step anodization method and then these TiO2 nanotubes treated in a methanol solution under UV light irradiation. The TiO2 nanotubes prepared in the two-step anodization process showed better photo-catalytic activity than TiO2 nanotubes prepared in one-step anodization process. Also, compared with TiO2 nanotubes without the UV pretreatment, the TiO2 nanotubes pretreated in a methanol solution under UV light irradiation exhibited significant enhancements in both photocurrent and activity. The treated TiO2 nanotubes exhibited a 5-fold enhancement in photocurrent and a 2.5-fold increase in the photo-catalytic degradation of salicylic acid. Also the effect of addition of persulfate and periodate on the photo-catalytic degradation of salicylic acid were investigated. The results showed that the degradation efficiency of salicylic acid increased with increasing persulfate and periodate concentrations. These treated TiO2 nanotubes are promising candidates for practical photochemical reactors.}, keywords = {Anodization,Nanostructures,Nanotubes,Photodegradation,Salicylic Acid}, url = {http://www.nanochemres.org/article_11568.html}, eprint = {http://www.nanochemres.org/article_11568_e678c482a659a888da3e583659eec370.pdf} } @article { author = {Rostamnia*, Sadegh and Doustkhah, Esmail}, title = {Sulfonic-based precursors (SAPs) for silica mesostructures: Advances in synthesis and applications}, journal = {Nanochemistry Research}, volume = {1}, number = {1}, pages = {19-32}, year = {2016}, publisher = {Iranian Chemical Society}, issn = {2538-4279}, eissn = {2423-818X}, doi = {10.7508/ncr.2016.01.003}, abstract = {Sulfonic acid-based precursors (SAP) play an important role in tailoring mesoporous silica’s and convert them to a solid acid catalyst with a Bronsted-type nature. These kinds of solid acids contribute to sustainable and green chemistry by their heterogeneous, recyclable, and high efficiency features. Therefore, knowing the properties and reactivity of SAPs can guide us to manufacture a sulfonated mesostructures compatible with reaction type and conditions. In the present review, some of the important SAPs, their reactivity and mechanism of functionalization are discussed.}, keywords = {Bronsted-type acid,Mesoporous silica,Sulfonic acid-based precursors (SAP)}, url = {http://www.nanochemres.org/article_11598.html}, eprint = {http://www.nanochemres.org/article_11598_a9eea08cda521e6a79f553dd33d722ed.pdf} } @article { author = {Enayati Ahangar, Laleh and Movassaghi, Karim and Emadi, Masoomeh and Yaghoobi, Fatemeh}, title = {Photocatalytic application of TiO2/SiO2-based magnetic nanocomposite (Fe3O4@SiO2/TiO2) for reusing of textile wastewater}, journal = {Nanochemistry Research}, volume = {1}, number = {1}, pages = {33-39}, year = {2016}, publisher = {Iranian Chemical Society}, issn = {2538-4279}, eissn = {2423-818X}, doi = {10.7508/ncr.2016.01.004}, abstract = {In this research we have developed a treatment method for textile wastewater by TiO2/SiO2-based magnetic nanocomposite. Textile wastewater includes a large variety of dyes and chemicals and needs treatments. This manuscript presents a facile method for removing dyes from the textile wastewater by using TiO2/SiO2-based nanocomposite (Fe3O4@SiO2/TiO2) under UV irradiation. This magnetic nanocomposite, as photocatalytically active composite, is synthesized via solution method in mild conditions. A large range of cationic, anionic and neutral dyes including: methyl orange, methylene blue, neutral red, bromocresol green and methyl red are used for treatment investigations. Neutral red and bromocresol green have good results in reusing treatment. The high surface area of nanocomposites improve the kinetic of wastewater treatment. In this method, by using the magnetic properties of Fe3O4 nanoparticles, TiO2-based photocatalyst could be separated and reused for 3 times. The efficiency of this method is respectively 100% and 65% for low concentration (10 ppm) and high concentration (50 ppm) of neutral red and bromocrosol green after 3 h treatment. The efficiency of treatment using the second used nanocomposite was 90% for 10 ppm of the same dyes.}, keywords = {Bromocresol Green,Fe3O4@SiO2/TiO2 nanocomposite,Neutral red,Photocatalysis,Textile dyeing wastewater}, url = {http://www.nanochemres.org/article_11599.html}, eprint = {http://www.nanochemres.org/article_11599_83ea6d804bf3f5c690a1147bd4e18991.pdf} } @article { author = {Ghotbinejad, Marzieh and Khosropour, Ahmad R. and Mohammadpoor-Baltork, Iraj and Moghadam, Majid and Tangestaninejad, Shahram and Mirkhani, Valiollah}, title = {Efficient buchwald hartwig reaction catalyzed by spions-bis(NHC)-Pd(II)}, journal = {Nanochemistry Research}, volume = {1}, number = {1}, pages = {40-48}, year = {2016}, publisher = {Iranian Chemical Society}, issn = {2538-4279}, eissn = {2423-818X}, doi = {10.7508/ncr.2016.01.005}, abstract = {A powerful and convenient reaction procedure for the C-N coupling reaction (the Buchwald-Hartwig reaction), yielding products of N-arylanilines and N-arylamines in both conventional heating and microwave irradiation has been reported. The protocol utilizes a stable and new supper ferromagnetic nanoparticle chelating N-heterocyclic dicarbene palladium(II) complex (Pd-NHC) as catalyst which helps/allows us to complete the reaction with only 0.002 mol% Pd producing high yield products. We also examined the reusability of the catalyst. It was found that the catalyst could be recovered by external magnetic field and  reused for seven times without obvious loss in catalytic activity.}, keywords = {Buchwald-Hartwig reaction,N-Heterocyclic carbenes,Magnetite nanoparticles,Palladium,TCT}, url = {http://www.nanochemres.org/article_11600.html}, eprint = {http://www.nanochemres.org/article_11600_1167106dc76c7e43ac2499f3c57926d8.pdf} } @article { author = {Rajabi, Ali Asghar and Yamini, Yadollah and Faraji, Mohammad and Nourmohammadian, Farahnaz}, title = {Modified magnetite nanoparticles with cetyltrimethylammonium bromide as superior adsorbent for rapid removal of the disperse dyes from wastewater of textile companies}, journal = {Nanochemistry Research}, volume = {1}, number = {1}, pages = {49-56}, year = {2016}, publisher = {Iranian Chemical Society}, issn = {2538-4279}, eissn = {2423-818X}, doi = {10.7508/ncr.2016.01.006}, abstract = {This paper reports application of cetyltrimethylammonium bromide (CTAB) coated magnetite nanoparticles (Fe3O4 NPs) as a novel adsorbent for removal of two types of disperse dyes, including disperse red 167, and disperse blue 183, from wastewater of textile companies. The effect of parameters including type of surfactant, pH of solution, surfactant concentration, and amount of salt, was investigated and optimized. The obtained results showed that the ratio of initial dye concentration to CTAB amounts has critical effect on removal processes so that removal efficiencies higher than 95% can be achieved even at high concentration of dyes as high as 500 mg l-1 when the ratio is optimum. Removal of dyes is very fast, and equilibrium is reached at times less than 10 min even for high concentration of the dyes. Very high adsorbent capacity (as high as 2000 mg g-1) was yielded for maximum tested concentration of the dyes (500 mg g-1). The obtained result was confirmed by thermogravimetric analysis data. This study showed that CTAB coated Fe3O4 NPs is a very efficient adsorbent for removal of dyes from wastewater of textile companies and has high capacity under optimum conditions.}, keywords = {Disperse blue 183,Disperse dyes,Removal,Disperse red 167,Magnetite nanoparticles}, url = {http://www.nanochemres.org/article_11601.html}, eprint = {http://www.nanochemres.org/article_11601_05ff67a602ad3855c5b4556fdbb5da46.pdf} } @article { author = {Karimkoshteh, Mostafa and Bagheri, Marziyeh and Zeynizadeha, Behzad}, title = {SiO2@FeSO4 nano composite: A recoverable nano-catalyst for eco-friendly synthesis oximes of carbonyl compounds}, journal = {Nanochemistry Research}, volume = {1}, number = {1}, pages = {57-63}, year = {2016}, publisher = {Iranian Chemical Society}, issn = {2538-4279}, eissn = {2423-818X}, doi = {10.7508/ncr.2016.01.007}, abstract = {Various aldoximes and ketoximes synthesis of corresponding aldehydes and ketones in the presence of SiO2@FeSO4 nano composite as recoverable nano catalyst and NH2OH·HCl. The SiO2@FeSO4 nano composite system was carried out between 10 to 15 min in oil bath (70-80 °C) under solvent-free condition in excellent yields in addition this protocol can be used for industrial scales. This method offers some advantages in term of clean reaction conditions, easy work-up procedure, short reaction time, applied to convert α-diketones to α-diketoximes (as longer than other carbonyl compounds), α,β-unsaturated aldehydes and ketones to corresponding oximes and suppression of any side product. So we think that NH2OH•HCl/SiO2@FeSO4 nano composite system could be considered a new and useful addition to the present methodologies in this area. Structure of products and nano composite elucidation was carried out by 1H NMR, 13C NMR, FT-IR, scanning electron microscopy (SEM).}, keywords = {Carbonyl compound,Nano composite,SiO2@FeSO4,Solvent-free,oxime}, url = {http://www.nanochemres.org/article_11602.html}, eprint = {http://www.nanochemres.org/article_11602_3abbe15e77f8f7a6c60453b62f22f0c9.pdf} } @article { author = {Moeinian, Maryam and Akhbari, K.}, title = {Effect of the pillar ligand on preventing agglomeration of ZnO nanoparticles prepared from Zn(II) metal-organic frameworks}, journal = {Nanochemistry Research}, volume = {1}, number = {1}, pages = {64-69}, year = {2016}, publisher = {Iranian Chemical Society}, issn = {2538-4279}, eissn = {2423-818X}, doi = {10.7508/ncr.2016.01.008}, abstract = {Metal-Organic Frameworks (MOFs) represent a new class of highly porous materials. On this regard,  two nano porous metal-organic frameworks of [Zn2(1,4-bdc)2(H2O)2∙(DMF)2]n (1) and [Zn2(1,4-bdc)2(dabco)]·4DMF·1⁄2H2O (2), (1,4-bdc = benzene-1,4-dicarboxylate, dabco = 1,4-diazabicyclo[2.2.2]octane and DMF = N,N-dimethylformamide) were synthesized and characterized. They were used for preparation of ZnO nanomaterials. With calcination of 1, agglomerated ZnO nanoparticles could be fabricated, but by the same process on 2, the tendency of ZnO nanoparticles to agglomeration was decreased. In addition, the ZnO nanoparticles prepared from compound 2 had smaller diameter than those obtained from compound 1. In fact, the role of organic dabco ligands in 2 is similar to the role of polymeric stabilizers in formation of nanoparticles. Finally, considering the various applications of ZnO nanomaterials such as light-emitting diodes, photodetectors, photodiodes, gas sensors and dye-sensitized solar cells (DSSCs), it seems that preparation of ZnO nanomaterials from their MOFs could be one of the simple and effective methods which may be applied for preparation of them.}, keywords = {Metal organic framework,Nanomaterials,Oxide,Pillar,Zinc(II)}, url = {http://www.nanochemres.org/article_11603.html}, eprint = {http://www.nanochemres.org/article_11603_716261ff3a0d925c85b09a35a9d72260.pdf} } @article { author = {Mazloum-Ardakani, Mohammad and Naser-Sadrabadi, Abolfazl and Khoshroo, Alireza}, title = {Oxidized multi walled carbon nanotubes for improving the electrocatalytic activity of a benzofuran derivative modified electrode}, journal = {Nanochemistry Research}, volume = {1}, number = {1}, pages = {70-78}, year = {2016}, publisher = {Iranian Chemical Society}, issn = {2538-4279}, eissn = {2423-818X}, doi = {10.7508/ncr.2016.01.009}, abstract = {In the present paper, the use of a novel carbon paste electrode modified by 7,8-dihydroxy-3,3,6-trimethyl-3,4-dihydrodibenzo[b,d]furan-1(2H)-one (DTD) and oxidized multi-walled carbon nanotubes (OCNTs) is described for determination of levodopa (LD), acetaminophen (AC) and tryptophan (Trp) by a simple and rapid method. At first, the electrochemical behavior of DTD is studied, then, the mediated oxidation of LD at the modified electrode is investigated. At the optimum pH of 7.4, the oxidation of LD occurs at a potential about 330 mV less positive than that of an unmodified carbon paste electrode. Based on differential pulse voltammetry (DPV), the oxidation current of LD exhibits a linear range between 1.0 and 2000.0 μM of LD with a detection limit (3σ) of 0.36 μM. DPV was also used for simultaneous determination of LD, AC and Trp at the modified electrode. Finally, the proposed electrochemical sensor was used for determinations of these substances in human serum sample.}, keywords = {Acetaminophen,Carbon Nanotube,Electrocatalysis,Levodopa,Modified carbon paste electrode,tryptophan}, url = {http://www.nanochemres.org/article_11642.html}, eprint = {http://www.nanochemres.org/article_11642_dd0168d54331f7383411d47fd08af9e4.pdf} } @article { author = {Amini, Mojtaba and Ashrafi, Mahdi}, title = {Photocatalytic degradation of some organic dyes under solar light irradiation using TiO2 and ZnO nanoparticles}, journal = {Nanochemistry Research}, volume = {1}, number = {1}, pages = {79-86}, year = {2016}, publisher = {Iranian Chemical Society}, issn = {2538-4279}, eissn = {2423-818X}, doi = {10.7508/ncr.2016.01.010}, abstract = {Nanoparticles of the ZnO and TiO2 were synthesized and the physicochemical properties of the compounds were characterized by IR, X-ray diffraction (XRD), scanning electron microscopy (SEM) and transmission electron microscopy (TEM). The XRD patterns of the ZnO and TiO2 nanoparticles could be indexed to hexagonal and rutile phase, respectively. Aggregated nanoparticles of ZnO and TiO2 with spherical-like shapes were observed with particle diameter in the range of 80-100 nm. These nanoparticles were used for photocatalytic degradation of various dyes, Rhodamine B (RhB), Methylene blue (MB) and Acridine orange (AO) under solar light irradiation at room temperature. Effect of the amount of catalyst on the rate of photodegradation was investigated. In general, because ZnO is unstable, due to incongruous dissolution to yield Zn(OH)2 on the ZnO particle surfaces and thus leading to catalyst inactivation,the catalytic activity of the system for photodegradation of dyes decreased dramatically when TiO2 was replaced by ZnO.}, keywords = {Nanoparticles,Photocatalytic degradation,TiO2,ZnO}, url = {http://www.nanochemres.org/article_11643.html}, eprint = {http://www.nanochemres.org/article_11643_6defafcf241b0585496a7be023337f9e.pdf} } @article { author = {Ramazani, Ali and Rouhani, Morteza and Mirhadi, Elahe and Sheikhi, Masoome and Ślepokura, Katarzyna and Lis, Tadeusz}, title = {Perlite-SO3H nanoparticles as an efficient and reusable catalyst for one-pot three-component synthesis of 1,2-dihydro-1-aryl-naphtho[1,2-e][1,3]oxazine-3-one derivatives under both microwave-assisted and thermal solvent-free conditions: Single crystal X-ray structure analysis and theoretical study}, journal = {Nanochemistry Research}, volume = {1}, number = {1}, pages = {87-107}, year = {2016}, publisher = {Iranian Chemical Society}, issn = {2538-4279}, eissn = {2423-818X}, doi = {10.7508/ncr.2016.01.011}, abstract = {A general synthetic route for the synthesis of 1,2-dihydro-1-aryl-naphtho[1,2-e][1,3]oxazine-3-one derivatives has been developed using perlite-SO3H nanoparticles as efficient catalyst under both microwave-assisted and thermal solvent-free conditions. The combination of 2-naphthol, aldehyde and urea enabled the synthesis of 1,2-dihydro-1-aryl-naphtho[1,2-e][1,3]oxazine-3-one derivatives in the presence of perlite-SO3H nanoparticles in good to excellent yields. This method provides several advantages like simple work-up, environmentally benign, and shorter reaction times along with high yields. In order to explore the recyclability of the catalyst, the perlite-SO3H nanoparticles in solvent-free conditions were used as catalyst for the same reaction repeatedly and the change in their catalytic activity was studied. It was found that perlite-SO3H nanoparticles could be reused for four cycles with negligible loss of their activity. Single crystal X-ray structure analysis and theoretical studies also were investigated for 4i product. The electronic properties of the compound have been analyzed using DFT calculations (B3LYP/6-311+G*). The FMO analysis suggests that charge transfer takes place within the molecule and the HOMO is localized mainly on naphthalene and oxazinone rings whereas the LUMO resides on the naphthalene ring.}, keywords = {Microwave,Oxazine-3-one,Perlite-SO3H nanoparticles,Single crystal X-ray structure analysis,Solvent-free conditions}, url = {http://www.nanochemres.org/article_11644.html}, eprint = {http://www.nanochemres.org/article_11644_ae82b1040ff32bd8abe2c0eec063d319.pdf} } @article { author = {Rezaee Nezhad, Eshagh and Pourmalekshahi, Ezatallah}, title = {Si-Imidazole-HSO4 Functionalized Magnetic Fe3O4 Nanoparticles as an Efficient and Reusable Catalyst for the Regioselective Ring Opening of Epoxides in Water}, journal = {Nanochemistry Research}, volume = {1}, number = {1}, pages = {108-117}, year = {2016}, publisher = {Iranian Chemical Society}, issn = {2538-4279}, eissn = {2423-818X}, doi = {10.7508/ncr.2016.01.012}, abstract = {An efficient and simple method for the preparation of Si-Imidazole-HSO4 functionalized magnetic Fe3O4 nanoparticles (Si-Im-HSO4 MNPs) and used as an efficient and reusable magnetic catalysts for the regioselective ring opening of epoxides under green conditions in water. This catalyst was used for the ring opening of epoxide corresponding to the thiocyanohydrins and azidohydrines. Compared to the classical ring opening of epoxides, this new method consistently has the advantage of excellent yields, short reaction times, and methodological simplicity.  }, keywords = {Azidohydrins,Epoxide,Imidazole,Magnetic catalyst,Thiocyanohydrins}, url = {http://www.nanochemres.org/article_11666.html}, eprint = {http://www.nanochemres.org/article_11666_63b5f4b2f181d6d74acd77740770548b.pdf} } @article { author = {Ghorbanloo, Massomeh and Mohamadi, Amene and Yahiro, Heidenori}, title = {Selective Oxidation of Cyclohexene, Toluene and Ethyl Benzene Catalyzed by Bis-(L-tyrosinato)copper(II), Immersed in a Magnetite-Infused Silica Matrix}, journal = {Nanochemistry Research}, volume = {1}, number = {1}, pages = {118-126}, year = {2016}, publisher = {Iranian Chemical Society}, issn = {2538-4279}, eissn = {2423-818X}, doi = {10.7508/ncr.2016.01.013}, abstract = {Bis-(L-tyrosinato)copper(II) was reacted with 3-(chloropropyl)-trimethoxysilane functionalized silica that has infused magnetite to yield a magnetically separable catalyst in which the copper carboxylate is covalently linked to the silica matrix through the silane linkage. The immobilized catalyst has been characterized by spectroscopic studies (such as FT-IR, EPR, Magnetic Measurement, SEM) and chemical analyses. The immobilized catalytic system functions as an efficient heterogeneous catalyst for oxidation of cyclohexene, toluene and ethyl benzene in the presence of hydrogen peroxide (as an oxidant) and sodium bicarbonate (a co-catalyst). The reaction conditions have been optimized for solvent, temperature and amount of oxidant and catalyst. Comparison of the encapsulated catalyst with the corresponding homogeneous catalyst showed that the heterogeneous catalyst had higher activity and selectivity than the homogeneous catalyst. The immobilized catalyst could be readily recovered from the reaction mixture by using a simple magnet, and  reused up to five times without any loss of activity.}, keywords = {Heterogeneous catalyst,H2O2,Magnetic,NaHCO3,Nanoparticles}, url = {http://www.nanochemres.org/article_11766.html}, eprint = {http://www.nanochemres.org/article_11766_59e92339a78ff309da4a879a1de9ae03.pdf} } @article { author = {Lashgari, Negar and Badiei, Alireza and Mohammadi Ziarani, Ghodsi}, title = {Modification of mesoporous silica SBA-15 with different organic molecules to gain chemical sensors: a review}, journal = {Nanochemistry Research}, volume = {1}, number = {1}, pages = {127-141}, year = {2016}, publisher = {Iranian Chemical Society}, issn = {2538-4279}, eissn = {2423-818X}, doi = {10.7508/ncr.2016.01.014}, abstract = {The recognition of the biologically and environmentally important ions is of great interest in the field of chemical sensors in recent years. The fluorescent sensors as a powerful optical analytical technique for the detection of low level of various analytes such as anions and metal cations have been progressively developed due to the simplicity, cost effective, and selectivity for monitoring specific analytes in various systems. Organic-inorganic hybrid nanomaterials have important advantages as solid chemosensors and various innovative hybrid materials modified by fluorescence molecules were recently prepared. On the other hand, the homogeneous porosity and large surface area of mesoporous silica make it a promising inorganic support. SBA-15 as a two-dimensional hexagonal mesoporous silica material with stable structure, thick walls, tunable pore size, and high specific surface area is a valuable substrate for modification with different organic chelating groups. This review highlights the fluorescent chemosensors for ionic species based on modification of the mesoporous silica SBA-15 with different organic molecules, which have been recently developed from our laboratory.}, keywords = {Fluorescent chemosensors,Hybrid materials,SBA-15,Surface modification}, url = {http://www.nanochemres.org/article_11769.html}, eprint = {http://www.nanochemres.org/article_11769_9ffac3d2a8fe9ddc25d4d1c34b154b71.pdf} }