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mass density of silicon carbide nanotube in iran

A density functional theory-based finite element …

In this paper, the vibrational characteristics of zigzag phosphorene nanotubes are investigated by using a three-dimensional finite element model. The beam elements are used to simulate the P–P bonds

Iron alysts supported on carbon nanotubes for Fischer

2015-10-12 · University College of Science, University of Tehran, Tehran, Iran 1. Introduction Fischer–Tropsch synthesis (FTS) is a potentially promising option for environmentally

Fabriion of gas ionization sensor using carbon …

Fabriion of gas ionization sensor using carbon nanotube arrays grown on porous silicon substrate. Zahra Mortazavi. wafers in a solution of 95 vol% DMF which diluted by HF. The current density and time of etching are 3.9 mA/cm2 and 30 min, respectively. water and oxygen on high temperature alytic metal–oxide–silicon carbide

The Scientific World Journal - Hindawi Publishing …

2013-8-17 · The Scientific World Journal is a peer-reviewed, Open Access journal that publishes original research, reviews, and clinical studies covering a wide range of subjects in science, technology, and medicine. The journal is divided into 81 subject areas.

Hydrogen Storage in Silicon Carbide Nanotubes by …

2019-3-11 · Using ab initio density-functional theory, we have studied the interaction of hydrogen molecules (H2) with a single lithium (Li)-doped silicon carbide nanotube (SiCNT). The hydrogen molecule physisorbs on a pure SiCNT with a binding energy of about 0.086 eV. However, the binding energy rises to 0.211 eV when H2 binds to a Li-adsorbed SiCNT. The increase in binding is due to the charge …

Mechanical properties of graphene cantilever from …

Mechanical properties of graphene cantilever from atomic force microscopy and density functional theory. Buks E and Yurke B 2006 Mass detection with a nonlinear nanomechanical resonator Phys. Rev. E 74 46619-27. Crossref The temperature effect on mechanical properties of silicon carbide sheet based on density functional treatment

Effects of silicon carbide nanoparticles and …

Polymeric materials are prone to moisture attack when they are immersed in water or exposed to moisture. This paper aims to study the effects of multi‐walled carbon nanotubes (MWCNT) and silicon carbide (SiC) nanofillers on reinforcing the epoxy polymer against water uptake and resultant degradations of mechanical properties.

Effects of Al Doping and Double-Antisite Defect on …

2019-3-12 · By using density functional theory, we investigated the reactivity and electronic sensitivity of pristine and structurally manipulated BC2N nanotubes (BC2NNT) to a HCN molecule. It was mainly found that (i) the pristine BC2NNT can weakly adsorb the HCN with adsorption energy of −1.1 kcal/mol, and its electronic properties are not sensitive to HCN; (ii) doping the tube by an Al atom can

The Use of Carbon Nanotubes to Reinforce 45S5 …

2010-4-13 · The Use of Carbon Nanotubes to Reinforce 45S5 Bioglass-Based Scaffolds for Tissue Engineering Appliions The purity and yield of the purified MWCNTs were more than 95% and 70% mass fraction Mitra S. Rapid, low temperature microwave synthesis of novel carbon nanotube-silicon carbide composite. Carbon. 2006; 44 (13):2804–2808. 17

Amin Hamed Mashhadzade - Supervisor of Operations

Tehran, Iran PhD in, Mechanical Engineering, Semnan University, Semnan, Iran Semnan University 2013 9 – 2018 2 4 6 Semnan my research field

Titanium dioxide - Wikipedia

2019-4-24 · Titanium dioxide, also known as titanium(IV) oxide or titania, is the naturally occurring oxide of titanium, chemical formula TiO 2.When used as a pigment, it is called titanium white, Pigment White 6 (PW6), or CI 77891.Generally, it is sourced from ilmenite, rutile and anatase.It has a wide range of appliions, including paint, sunscreen and food coloring.

Buy Journal of Polymer Materials : An International

Journal of Polymer Materials-An International Journal is published quarterly (4 issues per year), which covers broadly most of the important and fundamental areas of Polymer Science and Technology.It reports reviews on current topics and original research results on synthesis of monomers and polymers, polymer analysis, characterization and testing, properties of polymers, structure-property

Effects of silicon carbide nanoparticles and …

Polymeric materials are prone to moisture attack when they are immersed in water or exposed to moisture. This paper aims to study the effects of multi‐walled carbon nanotubes (MWCNT) and silicon carbide (SiC) nanofillers on reinforcing the epoxy polymer against water uptake and resultant degradations of mechanical properties.

Iron nitride - Revolvy

Iron nitrides are inorganic chemical compounds of iron and nitrogen . Physical properties All iron nitrides are gray powders. Chemical properties Iron has five nitrides , FeN, FeN, FeN, FeN and FeN. They are crystalline , metallic solids. Group 7 and group 8 transition metals form nitrides that decompose at relatively low temperatures - iron nitride, FeN decomposes under loss of molecular

International Journal of Heat and Mass Transfer

2018-4-13 · SiC silicon carbide T ð CÞ temperature XRD X-ray crystallography Greek syol uð%Þ nanoparticle volume concentration q ðkg=m3Þ density Subscripts bf base fluid Exp experimental nf nanofluid np nanoparticle pred predicted A. Kakavandi, M. Akbari/International Journal of Heat and Mass Transfer 124 (2018) 742–751 743

Carbon Nanotubes and Graphene for Electronics …

2010-5-21 · Carbon Nanotubes and graphene exhibit extraordinary electrical properties for organic materials, and have a huge potential in electrical and electronic appliions such as sensors, semiconductor devices, displays, conductors and energy conversion devices (e.g., fuel cells, harvesters and batteries). This report brings all of this together, covering the latest work from 100organizations …

BioMed Research International - Hindawi Publishing …

2013-9-22 · BioMed Research International is a peer-reviewed, Open Access journal that publishes original research articles, review articles, and clinical studies covering a wide range of subjects in life sciences and medicine. The journal is divided into 55 subject areas.

Materials for appliions in photoalysis and

Following on the successful symposia on the topic “Photoalytic materials for energy and environment”, Symposium B, E-MRS Spring Meeting 2015 (165 abstracts received) and “Materials for appliions in water treatment and water splitting”, Symposium F, E-MRS Spring Meeting 2017 (177 abstracts received), the topics of this symposium have been further enlarged to cover Dye-sensitized

Molecular dynamics simulations of adsorption and …

2017-11-6 · Silicon carbide nanotubes (SiCNTs) are new materials with excellent properties, such as high thermal stability and mechanical strength, which are much improved over those of their carboneous counterparts, namely, carbon nanotubes (CNTs). Gas separation processes at high temperatures and pressures may be improved by developing mixed-matrix meranes that contain SiCNTs.

Separation of cyanide from an aqueous solution using

2018-8-8 · Separation of cyanide, as a model contaminant, from aqueous solution was investigated using molecular dynamics simulations. In this research, cyanide separation was investigated using armchair silicon carbide (SiC) nanotubes of four different diameters at different applied pressures. The systems included (5,5), (6,

High-performance supercapacitors based on the …

Where dv/dt is the absolute value of the slope of the discharging curve. Using the Eq.(2) the specific capacitance of the paper supercapacitor was 163 F g − 1 that is inside the range of the capacitance of C-V curves. The schematic of the symmetric paper supercapacitor based on the graphene electrodes is shown in Fig. 4 (a). In this structure using push coting method on the gel electrolyte

A computational study of platinum adsorption on …

2016-9-4 · only silicon vacancy structure as structure without Pt atom showed ferromagnetic ordering, while all the systems in presence of Pt atom exhibited non-magnetic moment. Keywords Density functional theory Electronic structure Silicon carbide nanotube Platinum Defect Introduction Among recently created nanomaterials, silicon carbide nanostructures

Synthesis of Silicon Nanotubes on Porous Alumina …

Silicon nanotubes (SiNTs) have been grown on a porous alumina surface, without the assistance of alysts, by molecular beam epitaxy (E). The flow rate of Si atoms and the corrugated porous alumina surface seem to play an important role in the continuous growth of Si tubular structures.

Theoretical studies of the lithium atom on the silicon

Based on density functional theory method, we have investigated structural, electronic, and magnetic properties of lithium (Li) atom adsorbed on silicon carbide (SiC) zigzag (9,0) and armchair (5,5) nanotubes. Effective adsorptions are found on both inner- and outer-side of the SiC nanotubes, with adsorption energies ranging from 1.03 to 1.71 eV.

6-24-InTech-Thermal_conductivity_of_nanoparticles_filled

2013-10-23 · 6-24-InTech-Thermal_conductivity_of_nanoparticles_filled_polymers___ 27|3 6-24-InTech-Thermal_conductivity_of

Silicon Carbide: A Biocompatible Semiconductor Used …

2012-10-16 · The biocompatibility of the materials used in silicon-based devices, such as single crystalline silicon, polysilicon, silicon dioxide, silicone nitride and silicon carbide, were evaluated according to ISO 10993 standards by Kotzar et al. . Using mouse fibroblasts in the tests, none of the materials were found to be cytotoxic.

Silicon atom and silicon oxide molecule, within the

As a starting point for the following unconstrained relaxation, the silicon atom as a dopant was placed on the interior surface of the CNTs, decoupled from the surface and intended to drift toward the nanotube''s axis for the case 1, as shown in Fig. 1 (a,b). Additionally, the curvature diameter change was found to be almost negligible for both metallic and semiconducting CNTs such that the

A Molecular Study on Drug Delivery System Based on …

silicon carbide nanotube, about -145 Kcal/mol. Conclusion: The results confirmed that the silicon carbide nanotube is a more suitable model than the carbon nanotube for drug delivery system based on nanotubes as a carrier of platinum-based anticancer drugs. Short Communiion

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