Iranian Chemical SocietyNanochemistry Research2538-42791120160101Antibacterial ethylene propylene rubber impregnated with silver nanopowder: AgNP@EPR181156710.7508/ncr.2016.01.001ENMarzieh MiranzadehDepartment of Chemistry, Tarbiat Modares University, Tehran, IranMohammad Zaman KassaeeDepartment of Chemistry, Tarbiat Modares University, Tehran, IranLeila SadeghiDepartment of Polymer Engineering, Faculty of Chemical Engineering, Tarbiat Modares University, Tehran, IranMohsen SadroddiniDepartment of Polymer Engineering, Faculty of Chemical Engineering, Tarbiat Modares University, Tehran, IranMehdi Razzaghi KashaniDepartment of Polymer Engineering, Faculty of Chemical Engineering, Tarbiat Modares University, Tehran, IranNima KhoramabadiDepartment of Bacteriology, Faculty of Medical Sciences, Tarbiat Modares University, Tehran, IranJournal Article20141030Following 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<sup>-2</sup>. 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 <em>Escherichia coli</em> and <em>Staphylococcus aureus</em>.http://www.nanochemres.org/article_11567_786e5f229823253e5d3bbb0ec8ec9a70.pdfIranian Chemical SocietyNanochemistry Research2538-42791120160101Photo-electrocatalytic activity of TiO2 nanotubes prepared with two-step anodization and treated under UV light irradiation9181156810.7508/ncr.2016.01.002ENMohamad Mohsen MomeniDepartment of Chemistry, Isfahan University of Technology, Isfahan 84156-83111, IranMir Ghasem HosseiniElectrochemistry Research Laboratory, Department of Physical Chemistry, Chemistry Faculty, University of Tabriz, Tabriz, IranJournal Article20141025To 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.http://www.nanochemres.org/article_11568_e678c482a659a888da3e583659eec370.pdfIranian Chemical SocietyNanochemistry Research2538-42791120160101Sulfonic-based precursors (SAPs) for silica mesostructures: Advances in synthesis and applications19321159810.7508/ncr.2016.01.003ENSadegh Rostamnia*Organic and Nano Group (ONG), Department of Chemistry, Faculty of Science, University of Maragheh, P. O. Box: 55181-83111,
Maragheh, IranEsmail DoustkhahOrganic and Nano Group (ONG), Department of Chemistry, Faculty of Science, University of Maragheh, P. O. Box: 55181-83111,
Maragheh, IranJournal Article20141118Sulfonic 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.http://www.nanochemres.org/article_11598_a9eea08cda521e6a79f553dd33d722ed.pdfIranian Chemical SocietyNanochemistry Research2538-42791120160101Photocatalytic application of TiO2/SiO2-based magnetic nanocomposite (Fe3O4@SiO2/TiO2) for reusing of textile wastewater33391159910.7508/ncr.2016.01.004ENLaleh Enayati AhangarFaculty of Chemistry, University of Isfahan, Isfahan 81746-73441, IranKarim MovassaghiFaculty of Chemistry, University of Isfahan, Isfahan 81746-73441, IranMasoomeh EmadiDepartment of Chemistry, Marvdasht Branch, Azad Islamic University of Marvdasht, IranFatemeh YaghoobiFaculty of Chemistry, University of Isfahan, Isfahan 81746-73441, IranJournal Article20141217In this research we have developed a treatment method for textile wastewater by TiO<sub>2</sub>/SiO<sub>2</sub>-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 TiO<sub>2</sub>/SiO<sub>2</sub>-based nanocomposite (Fe<sub>3</sub>O<sub>4</sub>@SiO<sub>2</sub>/TiO<sub>2</sub>) 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 Fe<sub>3</sub>O<sub>4</sub> nanoparticles, TiO<sub>2</sub>-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.http://www.nanochemres.org/article_11599_83ea6d804bf3f5c690a1147bd4e18991.pdfIranian Chemical SocietyNanochemistry Research2538-42791120160101Efficient buchwald hartwig reaction catalyzed by spions-bis(NHC)-Pd(II)40481160010.7508/ncr.2016.01.005ENMarzieh GhotbinejadDepartment Chemistry, of Chemistry, University of Isfahan, Isfahan 81746-73441, IranAhmad R. KhosropourDepartment Chemistry, of Chemistry, University of Isfahan, Isfahan 81746-73441, IranIraj Mohammadpoor-BaltorkDepartment Chemistry, of Chemistry, University of Isfahan, Isfahan 81746-73441, IranMajid MoghadamDepartment Chemistry, of Chemistry, University of Isfahan, Isfahan 81746-73441, IranShahram TangestaninejadDepartment Chemistry, of Chemistry, University of Isfahan, Isfahan 81746-73441, IranValiollah MirkhaniDepartment Chemistry, of Chemistry, University of Isfahan, Isfahan 81746-73441, IranJournal Article20150502A 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.http://www.nanochemres.org/article_11600_1167106dc76c7e43ac2499f3c57926d8.pdfIranian Chemical SocietyNanochemistry Research2538-42791120160101Modified magnetite nanoparticles with cetyltrimethylammonium bromide as superior adsorbent for rapid removal of the disperse dyes from wastewater of textile companies49561160110.7508/ncr.2016.01.006ENAli Asghar RajabiDepartment of Chemistry, Tarbiat Modares University, P.O. Box: 14115-175, Tehran, IranYadollah YaminiDepartment of Chemistry, Tarbiat Modares University, P.O. Box: 14115-175, Tehran, IranMohammad FarajiFaculty of Food Industry and Agriculture, Department of Food Science & Technology, Standard Research Institute (SRI), Karaj, P. O.
Box: 31745-139, IranFarahnaz NourmohammadianDepartment of Colorant Manufacture, Iran Color Research Center, Tehran, IranJournal Article20150526This paper reports application of cetyltrimethylammonium bromide (CTAB) coated magnetite nanoparticles (Fe<sub>3</sub>O<sub>4 </sub>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<sup>-1</sup> 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<sup>-1</sup>) was yielded for maximum tested concentration of the dyes (500 mg g<sup>-1</sup>). The obtained result was confirmed by thermogravimetric analysis data. This study showed that CTAB coated Fe<sub>3</sub>O<sub>4</sub> NPs is a very efficient adsorbent for removal of dyes from wastewater of textile companies and has high capacity under optimum conditions.http://www.nanochemres.org/article_11601_05ff67a602ad3855c5b4556fdbb5da46.pdfIranian Chemical SocietyNanochemistry Research2538-42791120160101SiO2@FeSO4 nano composite: A recoverable nano-catalyst for eco-friendly synthesis oximes of carbonyl compounds57631160210.7508/ncr.2016.01.007ENMostafa KarimkoshtehDepartment of Chemistry, Faculty of Science, Urmia University, Urmia 57159-165, IranInstitute of Young Researchers in Nanotechnology, Razavi Khorasan, Mashhad, IranMarziyeh BagheriDepartment of Chemistry, Faculty of Science, Urmia University, Urmia 57159-165, IranBehzad ZeynizadehaDepartment of Chemistry, Faculty of Science, Urmia University, Urmia 57159-165, IranJournal Article19991130Various aldoximes and ketoximes synthesis of corresponding aldehydes and ketones in the presence of SiO<sub>2</sub>@FeSO<sub>4</sub> nano composite as recoverable nano catalyst and NH<sub>2</sub>OH·HCl. The SiO<sub>2</sub>@FeSO<sub>4</sub> 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 NH<sub>2</sub>OH•HCl/SiO<sub>2</sub>@FeSO<sub>4</sub> 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 <sup>1</sup>H NMR, <sup>13</sup>C NMR, FT-IR, scanning electron microscopy (SEM).http://www.nanochemres.org/article_11602_3abbe15e77f8f7a6c60453b62f22f0c9.pdfIranian Chemical SocietyNanochemistry Research2538-42791120160101Effect of the pillar ligand on preventing agglomeration of ZnO nanoparticles prepared from Zn(II) metal-organic frameworks64691160310.7508/ncr.2016.01.008ENMaryam MoeinianSchool of Chemistry, College of Science, University of Tehran, P.O. Box: 14155-6455, Tehran, IranK. AkhbariSchool of Chemistry, College of Science, University of Tehran, P.O. Box: 14155-6455, Tehran, IranJournal Article20141231Metal-Organic Frameworks (MOFs) represent a new class of highly porous materials. On this regard, two nano porous metal-organic frameworks of [Zn<sub>2</sub>(1,4-bdc)<sub>2</sub>(H<sub>2</sub>O)<sub>2</sub>∙(DMF)<sub>2</sub>]<sub>n</sub> (1) and [Zn<sub>2</sub>(1,4-bdc)<sub>2</sub>(dabco)]·4DMF·<sup>1</sup>⁄<sub>2</sub>H<sub>2</sub>O (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.http://www.nanochemres.org/article_11603_716261ff3a0d925c85b09a35a9d72260.pdfIranian Chemical SocietyNanochemistry Research2538-42791120160101Oxidized multi walled carbon nanotubes for improving the electrocatalytic activity of a benzofuran derivative modified electrode70781164210.7508/ncr.2016.01.009ENMohammad Mazloum-ArdakaniDepartment of Chemistry, Faculty of Science, Yazd University, Yazd, 89195-741, I.R. IranAbolfazl Naser-SadrabadiDepartment of Chemistry, Faculty of Science, Yazd University, Yazd, 89195-741, I.R. IranAlireza KhoshrooDepartment of Chemistry, Faculty of Science, Yazd University, Yazd, 89195-741, I.R. IranJournal Article20150505In 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.http://www.nanochemres.org/article_11642_dd0168d54331f7383411d47fd08af9e4.pdfIranian Chemical SocietyNanochemistry Research2538-42791120160101Photocatalytic degradation of some organic dyes under solar light irradiation using TiO2 and ZnO nanoparticles79861164310.7508/ncr.2016.01.010ENMojtaba AminiDepartment of Chemistry, Faculty of Science, University of Maragheh, Golshahr, P.O. Box: 55181-83111731, Maragheh, IranMahdi AshrafiDepartment of Chemistry, Faculty of Science, University of Maragheh, Golshahr, P.O. Box: 55181-83111731, Maragheh, IranJournal Article19991130Nanoparticles of the ZnO and TiO<sub>2</sub> 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 TiO<sub>2</sub> nanoparticles could be indexed to hexagonal and rutile phase, respectively. Aggregated nanoparticles of ZnO and TiO<sub>2</sub> 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)<sub>2</sub> on the ZnO particle surfaces and thus leading to catalyst inactivation,the catalytic activity of the system for photodegradation of dyes decreased dramatically when TiO<sub>2</sub> was replaced by ZnO.http://www.nanochemres.org/article_11643_6defafcf241b0585496a7be023337f9e.pdfIranian Chemical SocietyNanochemistry Research2538-42791120160101Perlite-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 study871071164410.7508/ncr.2016.01.011ENAli RamazaniDepartment of Chemistry, University of Zanjan, P.O. Box: 45195-313, Zanjan, Iran0000-0003-3072-7924Morteza RouhaniDepartment of Chemistry, University of Zanjan, P.O. Box: 45195-313, Zanjan, IranElahe MirhadiDepartment of Chemistry, University of Zanjan, P.O. Box: 45195-313, Zanjan, IranMasoome SheikhiYoung Researchers and Elite Club, Gorgan Branch, Islamic Azad University, Gorgan, IranKatarzyna ŚlepokuraFaculty of Chemistry, University of Wrocław, 14 Joliot-Curie St., 50-383 Wrocław, PolandTadeusz LisFaculty of Chemistry, University of Wrocław, 14 Joliot-Curie St., 50-383 Wrocław, PolandJournal Article20151009A general synthetic route for the synthesis of 1,2-dihydro-1-aryl-naphtho[1,2-<em>e</em>][1,3]oxazine-3-one derivatives has been developed using perlite-SO<sub>3</sub>H 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-<em>e</em>][1,3]oxazine-3-one derivatives in the presence of perlite-SO<sub>3</sub>H 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-SO<sub>3</sub>H 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-SO<sub>3</sub>H 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.http://www.nanochemres.org/article_11644_ae82b1040ff32bd8abe2c0eec063d319.pdfIranian Chemical SocietyNanochemistry Research2538-42791120160101Si-Imidazole-HSO4 Functionalized Magnetic Fe3O4 Nanoparticles as an Efficient and Reusable Catalyst for the Regioselective Ring Opening of Epoxides in Water1081171166610.7508/ncr.2016.01.012ENEshagh Rezaee NezhadDepartment of Chemistry, Payame Noor University, P.O. BOX: 19395-4697 Tehran, IranEzatallah PourmalekshahiDepartment of Chemistry, Payame Noor University, P.O. BOX: 19395-4697 Tehran, IranJournal Article19991130An 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. http://www.nanochemres.org/article_11666_63b5f4b2f181d6d74acd77740770548b.pdfIranian Chemical SocietyNanochemistry Research2538-42791120160101Selective Oxidation of Cyclohexene, Toluene and Ethyl Benzene Catalyzed by Bis-(L-tyrosinato)copper(II), Immersed in a Magnetite-Infused Silica Matrix1181261176610.7508/ncr.2016.01.013ENMassomeh GhorbanlooDepartment of Chemistry, Faculty of Science, University of Zanjan, 45371-38791 Zanjan, IranAmene MohamadiDepartment of Chemistry, Faculty of Science, University of Zanjan, 45371-38791 Zanjan, IranHeidenori YahiroDepartment of Applied Chemistry, Faculty of Engineering, Ehime University, Matsuyama 790-8577, JapanJournal Article20151009Bis-(<em>L</em>-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.http://www.nanochemres.org/article_11766_59e92339a78ff309da4a879a1de9ae03.pdfIranian Chemical SocietyNanochemistry Research2538-42791120160101Modification of mesoporous silica SBA-15 with different organic molecules to gain chemical sensors: a review1271411176910.7508/ncr.2016.01.014ENNegar LashgariSchool of Chemistry, College of Science, University of Tehran, Tehran, IranAlireza BadieiSchool of Chemistry, College of Science, University of Tehran, Tehran, Iran
Nanobiomedicine Center of Excellence, Nanoscience and Nanotechnology Research Center, University of Tehran, Tehran, IranGhodsi Mohammadi ZiaraniDepartment of Chemistry, Faculty of Science, Alzahra University, Tehran, IranJournal Article20151021The 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.http://www.nanochemres.org/article_11769_9ffac3d2a8fe9ddc25d4d1c34b154b71.pdf