Iranian Nanotechnology SocietyInternational Journal of Nanoscience and Nanotechnology1735-700412420161101Biogenic Approach using Sheep Milk for the Synthesis of Platinum Nanoparticles: The Role of Milk Protein in Platinum Reduction and Stabilization19920624539ENM. Gholami-ShabaniDepartment of Mycology, Pasteur Institute of Iran, Tehran 13164, IranZ. Gholami-ShabaniFaculty of Aerospace, Science and Research Campus, Islamic Azad University, Tehran, IranM. Shams-GhahfarokhiDepartment of Mycology, Faculty of Medical Sciences, Tarbiat Modares University, Tehran, 14115-331, IranA. AkbarzadehDepartment of Nanobiotechnology, Pasteur Institute of Iran, Tehran 13164, IranGh. RiaziInstitute of Biochemistry and Biophysics, University of Tehran, Tehran, IranM. Razzaghi-AbyanehDepartment of Mycology, Pasteur Institute of IranJournal Article20141231<span class="fontstyle0">Bio-directed synthesis of nanoparticles is an interesting field of rapid advancement for biologists,<br />chemists and materials scientists, especially in light of efforts to find out green methods of inorganic<br />material synthesis. In the present study, green synthesis of platinum nanoparticles (PtNPs) using sheep<br />milk is reported for the first time. By adjusting the concentrations of chloroplatinic acid (H</span><span class="fontstyle0" style="font-size: 7pt;">2</span><span class="fontstyle0">PtCl</span><span class="fontstyle0" style="font-size: 7pt;">6</span><span class="fontstyle0">) and<br />milk in aqueous solutions, spherical PtNPs were obtained at room temperature. The nanoparticles<br />obtained were characterized by UV-Vis spectroscopy, dynamic light scattering (DLS), high-resolution<br />Transmission Electron Microscopy (TEM) and X-Ray diffraction (XRD). The spherical particles obtained<br />have an average size 9.0 nm as shown by XRD pattern and TEM analysis. Fourier Transform Infra-Red<br />(FTIR) measurements were carried out to identify the possible biomolecules responsible for capping and<br />efficient stabilization of the PtNPs synthesized by milk. The carboxylic acid group libration and amide I<br />and II bands revealed the binding of protein with platinum surface through the amine group rather than<br />the carboxyl group</span><span class="fontstyle0" style="color: #ff0000;">. </span><span class="fontstyle0">Among a wide variety of biological resources which are introduced for reducing Pt<br />ions into PtNPs, green approaches like using sheep milk have outstanding benefits for synthesize<br />biological metal nanoparticles due to their eco-friendly phenomenon and very less amounts of<br />cytotoxicity. PtNPs green synthesized in this study are potential candidates to use in drug discovery and<br />gene transfer technologies.</span>Iranian Nanotechnology SocietyInternational Journal of Nanoscience and Nanotechnology1735-700412420161101Synthesis and Characterization of γ-Alumina Porous Nanoparticles from Sodium Aluminate Liquor with Two Different Surfactants20721422929ENA. KhazaeiDepartment of Chemistry, Faculty of Science, Bu-Ali Sina University, P.O.Box 651783868, Hamadan, IranS. NazariDepartment of Engineering, Faculty of Engineering, Imam Khomeini International University, P.O. Box 3414916818, Qazvin, IranGh. KarimiDepartment of Engineering, Faculty of Engineering, Imam Khomeini International University, P.O. Box 3414916818, Qazvin, IranE. GhaderiDepartment of Chemistry, Faculty of Science, Bu-Ali Sina University, P.O.Box 651783868, Hamadan, IranKh. Mansouri MoradianDepartment of Chemistry, Faculty of Science, Bu-Ali Sina University, P.O.Box 651783868, Hamadan, IranZ. BagherporDepartment of Engineering, Faculty of Engineering, Imam Khomeini International University, P.O. Box 3414916818, Qazvin, IranS. NazariDepartment of Civil Engineering, Faculty of Civil Engineering , Civil Engineering College of Hamedan P.O. Box 6515735617, Hamedan, IranJournal Article20141030<span class="fontstyle0">Among the various phases of alumina, two phases γ and α are the most widely used in various<br />industries. In this paper, γ-Al</span><span class="fontstyle0" style="font-size: 7pt;">2</span><span class="fontstyle0">O</span><span class="fontstyle0" style="font-size: 7pt;">3 </span><span class="fontstyle0">porous nanoparticles have been successfully synthesized from a simple<br />aqueous sol–gel method using inexpensive material such as: sodium aluminate liquor, HCl, NaOH,<br />Polyethylene glycol (PEG) and polyvinyl alcohol (PVA). Sodium aluminate liquor was extracted from<br />Bayer liquor of alumina product processed in the Jajarm alumina factory. PEG and PVA were used as<br />structure-stabilizing agents</span><span class="fontstyle0" style="font-size: 12pt;">. </span><span class="fontstyle0">The structures and properties of samples calcined at 800 ºC, were<br />performed utilizing X-ray diffraction (XRD), infrared spectroscopy (FTIR), scanning electron<br />microscopy (SEM), termogeravimetery analysis (TG/DTA), and N</span><span class="fontstyle0" style="font-size: 7pt;">2 </span><span class="fontstyle0">adsorption/desorption techniques.<br />Prepared sample of γ-Al</span><span class="fontstyle0" style="font-size: 7pt;">2</span><span class="fontstyle0">O</span><span class="fontstyle0" style="font-size: 7pt;">3 </span><span class="fontstyle0">with polyethylene glycol surfactant has an average crystallite size of 2.313<br />nm, average particle size of 20 nm, specific surface area (SSA) of 138.8 m</span><span class="fontstyle0" style="font-size: 7pt;">2</span><span class="fontstyle0">/g, and pore volume of </span><span class="fontstyle2">∼<br /></span><span class="fontstyle0">0.166 cm</span><span class="fontstyle0" style="font-size: 7pt;">3</span><span class="fontstyle0">/g. The average crystallite size of 2.063 nm, average particle size of 46 nm, specific surface<br />area of 201.1 m</span><span class="fontstyle0" style="font-size: 7pt;">2</span><span class="fontstyle0">/g, and pore volume of </span><span class="fontstyle2">∼ </span><span class="fontstyle0">0.246 cm</span><span class="fontstyle0" style="font-size: 7pt;">3</span><span class="fontstyle0">/g, were achieved using polyvinyl alcohol surfactant.</span>Iranian Nanotechnology SocietyInternational Journal of Nanoscience and Nanotechnology1735-700412420161101Efficient Synthesis of 2, 3-Dihydroquinazolin-4(1H)-ones in the Presence of Ferrite/Chitosan as a Green and Reusable Nanocatalyst21522222930ENA. MalekiCatalysts and Organic Synthesis Research Laboratory, Department of Chemistry, Iran University of Science and Technology, Tehran 16846-13114, IranJournal Article20141019<span class="fontstyle0">In this work, an efficient and facile method has been developed for the synthesis of 2,3-<br />dihydroquinazolin-4(1H)-ones from a condensation reaction of 2-aminobenzamide with various alkyl,<br />aryl and alicyclic aldehydes or ketones using Fe</span><span class="fontstyle0" style="font-size: 7pt;">3</span><span class="fontstyle0">O</span><span class="fontstyle0" style="font-size: 7pt;">4</span><span class="fontstyle0">/chitosan as an environmentally benign, magnetically<br />recoverable nanocomposite catalyst in ethanol at room temperature in high to excellent yields under<br />mild reaction conditions. The Fe</span><span class="fontstyle0" style="font-size: 7pt;">3</span><span class="fontstyle0">O</span><span class="fontstyle0" style="font-size: 7pt;">4</span><span class="fontstyle0">/chitosan composite nanocatalyst was first prepared by a sol-gel<br />method and characterized by using a variety of conventional techniques including Fourier transforms<br />infrared spectroscopy (FT-IR), scanning electron microscopy (SEM), energy-dispersive X-ray (EDX) and<br />X-ray diffraction (XRD) analyses. The present work include several advantages such as avoiding the use<br />of toxic solvents or expensive catalysts, generality, high yields, short reaction times, clean reaction<br />profile, ease of product isolation, simplicity, recyclability of the catalyst and finally agreement with the<br />green chemistry protocols. All make it a useful and attractive protocol for the synthesis of heterocyclic<br />compounds like quinazolinone derivatives.</span>Iranian Nanotechnology SocietyInternational Journal of Nanoscience and Nanotechnology1735-700412420161101Nitrate Removal from Drinking Water using Organo-Silane Modified Natural Nano-Zeolite22323222931ENT. MeftahShiraz University, Faculty of advanced technologies, nanochemical engineering department, shiraz, IranM. M. ZerafatFaculty of Advanced Technologies, Nano Chemical Engineering Department, Shiraz University, Shiraz, IranJournal Article20150603<span class="fontstyle0">Nitrate-containing compounds are considered as groundwater contaminants, the concentration of which<br />has been growing in these resources during recent years. As a result, it seems necessary to use effective<br />methods to remove nitrate from water and wastewater. Adsorption is generally considered more<br />economical in water treatment compared to other feasible alternative techniques. Natural Clinoptilolite<br />zeolite is one of the best absorbents because of its high capacity and low cost. Surfactants such as<br />hexadecyl trimethyl ammonium (HDTMA) are usually used for modification but they are not stable and<br />removed as a result of subtle temperature variations. In this research, zeolite nanoparticles are<br />chemically modified by 3-aminopropyl triethoxysilane. The advantage of this modification method is its<br />stability at different environmental conditions. Adsorbent properties have been analyzed by PSA, FTIR,<br />XRD, FESEM and CHN elemental analysis. Also, nitrate adsorption capacity of modified zeolite was<br />examined by UV-Vis spectroscopy. NH</span><span class="fontstyle0" style="font-size: 7pt;">2 </span><span class="fontstyle0">groups are developed on the zeolite surface as a result of<br />organo-silane modification, which must be converted to NH</span><span class="fontstyle0" style="font-size: 7pt;">4+ </span><span class="fontstyle0">so that nitrate adsorption becomes<br />possible in acidic conditions. Based on the results, the best nitrate removal capacity is achieved at the<br />lowest concentration and pH values. 80.12 % nitrate removal was obtained at pH=3, nitrate<br />concentration = 50 mg/l and adsorbent concentration = 4 g/l.</span>Iranian Nanotechnology SocietyInternational Journal of Nanoscience and Nanotechnology1735-700412420161101Preparation and Characterization of Reduced Graphene Oxide Doped in Sol-Gel Derived Silica for Application in Electrochemical Double-Layer Capacitors23324122932ENR. Mohammad-RezaeiDepartment of Chemistry, Faculty of Sciences, Azarbaijan Shahid Madani University,
P.O.Box 53714-161, Tabriz, IranH. RazmiDepartment of Chemistry, Faculty of Sciences, Azarbaijan Shahid Madani University,
P.O.Box 53714-161, Tabriz, IranJournal Article20150626<span class="fontstyle0">In this study, a new graphene ceramic composite (GCC) was prepared based on the reduced graphene<br />oxide (rGO) doped in sol-gel derived silica. The GCC was prepared by dispersing rGO nanosheets into<br />the sol-gel precursors containing methyl triethoxysilane, methanol and hydrochloric acid solution.<br />During an acid catalyzed hydrolyze reaction and gelation process, rGO nanosheets were successfully<br />doped into the prepared gel. The fabricated GCC was characterized by field emission scanning electron<br />microscopy, Transmission electron microscopy, Fourier transform infrared spectroscopy, X-ray<br />diffraction, thermogravimetric analysis, cyclic voltammetry and galvanostatic charge/discharge<br />techniques. According to the electrochemical results, the prepared GCC has shown remarkable specific<br />capacitance in comparison with carbon ceramic composite. Due to unique configuration of GCC and<br />large specific surface area of rGO, the resultant GCC shows specific capacitance of 428 F g</span><span class="fontstyle0" style="font-size: 7pt;">-1 </span><span class="fontstyle0">at current<br />density of 1 A g</span><span class="fontstyle0" style="font-size: 7pt;">-1</span><span class="fontstyle0">and good cycling stability using three electrode system.</span>Iranian Nanotechnology SocietyInternational Journal of Nanoscience and Nanotechnology1735-700412420161101Computation on Zagreb Polynomial of Some Families of Dendrimers24324922933ENM. Nazri HusinSchool of Informatics and Applied Mathematics, Universiti Malaysia Terengganu, 21030
Kuala Terengganu, Terengganu, MalaysiaR. HasniSchool of Informatics and Applied Mathematics, Universiti Malaysia Terengganu, 21030
Kuala Terengganu, Terengganu, MalaysiaN. E. ArifCollege of Computer Sciences and Mathematics, Tikrit University, 42 Tikrit, IraqJournal Article20150625<span class="fontstyle0">In mathematical chemistry, a particular attention is given to degree-based graph invariant. The Zagreb<br />polynomial is one of the degree based polynomials considered in chemical graph theory. A dendrimer is<br />an artificially manufactured or synthesized molecule built up from branched units called monomers. In<br />this note, the first, second and third Zagreb polynomials of some nanostar dendrimers are determined.</span>Iranian Nanotechnology SocietyInternational Journal of Nanoscience and Nanotechnology1735-700412420161101Boundary layer Viscous Flow of Nanofluids and Heat Transfer Over a Nonlinearly Isothermal Stretching Sheet in the Presence of Heat Generation/Absorption and Slip Boundary Conditions25126822934ENDodda RamyaDepartment of Mathematics, University College of Science, Osmania University, Hyderabad,
500007, Telangana State, IndiaR. Srinivasa RajuDepartment of Engineering Mathematics, GITAM University, Hyderabad Campus, Rudraram, 502329, Medak (Dt), Telangana State, IndiaJ. Anand RaoDepartment of Mathematics, University College of Science, Osmania University, Hyderabad, 500007, Telangana State, IndiaM. M. RashidiShanghai Key Lab of Vehicle Aerodynamics and Vehicle Thermal Management Systems,
Tongji University, 4800 Cao An Rd., Jiading, Shanghai 201804, China
ENN-Tongji Clean Energy Institute of Advanced Studies, Shanghai, ChinaJournal Article20160602<span class="fontstyle0">The steady two-dimensional flow of a viscous nanofluid of magnetohydrodynamic (MHD) flow and heat<br />transfer characteristics for the boundary layer flow over a nonlinear stretching sheet is considered. The<br />flow is caused by a nonlinear stretching sheet with effects of velocity, temperature and concentration<br />slips. Problem formulation is developed in the presence of heat generation/absorption and<br />suction/injection parameters on non-linear stretching sheet. The resulting governing equations are<br />converted into a system of nonlinear ordinary differential equations by applying a suitable similarity<br />transformation and then solved numerically using Keller-Box technique. Convergences of the derived<br />solutions are studied. The effects of the different parameters on the velocity, temperature, and<br />concentration profiles are shown and discussed. Numerical values of local skin-friction coefficient, local<br />Nusselt number and Sherwood number are tabulated. It is found that the velocity profiles decreases,<br />temperature and concentration profiles increases with increasing of velocity slip parameter, and the<br />thermal boundary layer thickness increases with increasing of Brownian motion and thermophoresis<br />parameters.</span>Iranian Nanotechnology SocietyInternational Journal of Nanoscience and Nanotechnology1735-700412420161101Toxicity Effects of SiO2 Nanoparticles on Green Micro-Algae Dunaliella Salina26927522935ENM. Ayatallahzadeh ShiraziYoung Researchers and Elite Club, Lahijan Branch, Islamic Azad University, Lahijan, IranF. ShariatiDepartment of Environment, Faculty of Natural Resources, Lahijan Branch, Islamic Azad
University, Lahijan, Iran, P.O.Box 1616Z. RamezanpourInternational Sturgeon Research Institute, P.O.Box: 41635-3464, Rasht, IranJournal Article20140214<span class="fontstyle0">New extension of nanoparticles used in the last two decades and hence, entrance of them to industrial<br />and non-industrial sewage necessitate study of probable effects of these materials in aquatic ecosystems.<br />This research was performed in order to determine the toxicity effect of silica dioxide (SiO</span><span class="fontstyle0" style="font-size: 7pt;">2</span><span class="fontstyle0">) nano<br />particles on Dunaliella salina green algae in laboratory conditions. SiO</span><span class="fontstyle0" style="font-size: 7pt;">2 </span><span class="fontstyle0">nanoparticle is one of the best<br />full-used nano particles which have application in industries like production of ceramics, plastics, glass,<br />cosmetics, medicine and paper. Dunaliella algae because of having economic value and different<br />biochemical composition is used as complements with natural origin in food and pharmacology<br />industries. For toxicity determination of this material, the experiment was performed according to<br />O.E.C.D standard method. Experiments on Dunaliella were performed for 72 hours with 7 treatments,<br />two controls and three replicates in each treatment and daily counting of cells in each tube. Counting<br />cell algae population was done by microscope on a Thoma counting slide. For data analysis, probit<br />analysis, Excel software and SPSS21 were used. The 72 hours NOEC, EC</span><span class="fontstyle0" style="font-size: 7pt;">90</span><span class="fontstyle0">, EC</span><span class="fontstyle0" style="font-size: 7pt;">50 </span><span class="fontstyle0">and EC</span><span class="fontstyle0" style="font-size: 7pt;">10 </span><span class="fontstyle0">were<br />calculated. The amounts of 72 hours are EC10 =5.37.10</span><span class="fontstyle0" style="font-size: 7pt;">-5 </span><span class="fontstyle0">, EC50 = 0.169 , EC90 = 512.86, NOEC =<br />1.6×10</span><span class="fontstyle0" style="font-size: 7pt;">-2 </span><span class="fontstyle0">mg/l. Cell compression noticeably decreased (P < 0.05) by increasing nanoparticle<br />concentration and silica oxide nanoparticle caused to inhibit growth in Dunaliella species.</span>