Journal of Nanomaterials & Molecular Nanotechnology is a peer-reviewedscholarly journal and aims to publish the most complete and reliable source of information on the discoveries and current developments in the mode of original articles, review articles, case reports, short communications, etc. in all major themes pertaining to Nanotechnology and making them accessibleonline freely without any restrictions or any other subscriptions to researchers worldwide.
Journal of Nanomaterials & Molecular Nanotechnology focuses on the topics that include:
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*Unofficial 2014 Impact Factor was established by dividing the number of articles published in 2012 and 2013 with the number of times they are cited in 2014 based on Google search and the Scholar Citation Index database. If ‘X’ is the total number of articles published in 2012 and 2013, and ‘Y’ is the number of times these articles were cited in indexed journals during 2014 than, impact factor = Y/X
Effect of Sintering Temperature on the Structural Magnetic and Electrical Properties of Zinc Ferrite Samples
Zinc ferrite was synthesized by sol–gel method. Fine particles with different grain size were obtained by subsequent heat treatment at different temperatures. The structure of all the prepared samples was elucidated using XRD. Magnetic measurement shows a decrease in magnetization with increase in sintering temperature. The variation of AC conductivity and dielectric constant was studied as a function of frequency, temperature and grain size. The Maxwell-Wagner two layer model and electron hopping mechanism was used to explain the variation of conduction and polarization with frequency. The observed high permittivity and conductivity for small grains were explained on the basis of the correlated barrier hopping model.
Molecular Electrostatic Potential Analysis of Nano-Scale Fullerene (C60) Crystals and Some Specific Derivatives: DFT Approach
Nano-scale fullerene (C60) crystals and its derivatives have been proven to make contributions in many types of applications. The molecular electrostatic potential of C60 doped with elements of Group III and Group V were studied by technical DFT-B3LYP /3- 21G** molecular modelling. The molecular electrostatic potential map (MEP) for substituting Fullerene by Group III and Group V, was painted on the surface using a red to blue scale. Results dedicate the substituted Fullerene to many important applications depending on the type of metal.
The Influence of Microbacterium hominis and Bacillus licheniformis Extracellular Polymers on Silver and Iron Oxide Nanoparticles Production; Green Biosynthesis and Mechanism of Bacterial Nano Production
Due to the abundant applications of metal nanoparticles on different area, researchers are always looking for fast, easy, cheap and non-toxic way to synthesis nanoparticles. In scientific communities, green and biological synthesis of nanoparticles have got more attention, so in this study 300 μl of extracellular polysaccharides (28.8717 mg/L and 35.5344 mg/L) from Microbacterium hominis and Bacillus licheniformis respectively were used to produce silver, silver oxide, iron oxide and iron metal nanoparticles from silver nitrate and iron chloride (1 mM).These strains were isolated on Caso Agar medium enriched with 20% sucrose. It was interesting that bacteria without polysaccharide could not produce these nanoparticles while the whole cells with extracellular polysaccharide do the same reaction as polysaccharides and carboxy methyl cellulose. FTIR analyzing showed these polysaccharides has similarities in structure with carboxy methyl cellulose and have certain functional groups such as hydroxyl, carbonyl, methyl and aldehyde, so the mechanism for making nanoparticles by these microorganisms is probably is not related to enzyme activities. The properties of nanoparticles were investigated by XRD, AFM and UV absorption (200-800 nm). The crystalline, approximate size and color changes were detected. Iron and iron oxide nanoparticles, was cubic structures with sizes of 29-42 nm and silver and silver oxide nanoparticles was hexagonal with 12-42 nm.
ZnO-nanoparticle Coated Multiwall Carbon Nanotube as a New Sensing Element for Highly Sensitive Potentiometric Determination of Thiosulfate Ion
Here, we are reporting the response properties of a simple and useful potentiometric thiosulfate-selective electrode based on multiwall carbon nanotubes (MWCNTs) decorated with ZnO nanoparticles as sensing element. We successfully decorated the MWCNTs by using sol-gel process, which has not been reported to prepare such a decoration before. The ZnO-MWCNTs were characterized by XRD, SEM and TEM techniques. After optimization the composition requirements for construction the best electrode, the potentiometric response characteristics of the electrochemical sensor was examined for determination of thiosulfateanion in aqueous solutions. A Nernstian response of 30.3 ± 0.1 mV/dec with a detection limit of 1.24×10-7 M, a linear dynamic range of 1.35×10-7 to 1.45×10-1 M of thiosulfate and a response time of about 3 min are of good performance factors for the proposed electrode. The electrode demonstrated a reasonable repeatability and high selectivity towards the thiosulfate ion over the other tested anions in the solution.