Asian Journal of Nanoscience and Materials
Volume:3 Issue: 4, Oct 2020

Creep behavior of AISI 316 austenitic stainless steel as one of the most fundamental materials utilized in high temperature operating conditions due to their good high-temperature mechanical properties in various industries such as high temperature power generation plants, gas and steam turbines, pipelines, weld joints, pressure vessels, and heat exchangers. This review attempted to cover some identifying factors on the creep behavior of the 316 stainless steel such as addition of alloying elements such as N and Cu into the matrix, presence of residual stress and pre-strain, microstructure and cold work. In addition, the creep-fatigue combination behavior of the 316 austenitic stainless steel was discussed.

In this research, the influence of doping graphene with silicon on the adsorption of Cd2+ was investigated using the infrared (IR), natural bond orbital (NBO) and frontier molecular orbital (FMO) computations. The thermodynamic parameters including Gibbs free energy changes (ΔGad), enthalpy variations (ΔHad) and thermodynamic constant (Kth) revealed that, the Si impurity made the cadmium adsorption more spontaneous, exothermic, irreversible, and experimentally feasible. The effect of temperature and geometrical situation of silicon impurities at three ortho, meta and para conditions were also evaluated. The results indicated that, the adsorption efficiency was higher at room temperature and doping graphene with silicon at the ortho position. The NBO results demonstrated that, the cadmium interaction with both pristine and Si-doped graphenes was chemisorption, which was due to formation of the covalent bonds with Sp 3 hybridization in all of the evaluated configurations. The applicability of the pristine and Si-doped graphenes as an electrochemical sensing material for detection of the cadmium was also assessed by the FMO parameters including, bandgap, electrophilicity, and maximum transferred charge capacity. The ortho silicon doped graphene was found to be the best recognition element for the Cd(II) as the bandgap experienced the sharpest increase from 1.82 eV to 7.74 eV in the case of this adsorbent.

Nanotechnology facilitates numerous magnificent applications due to the desired shapes and size of the nanoparticles (NPs). However, restricted study of synthesis and characterization of rare earth metal make them more fascinating to choose for further research, lanthanum oxide nanoparticles (La2O3 NPs) is an excellent choice for research due to their fabulous applications in electronics, sensors, insulators, antimicrobial agents, biomedicines, and biocatalyst. Due to countless importance of La2O3 NPs, in literature its synthesis is described by several chemical, physical methods, and there are quite a few reports exploring plants as catalyst to achieve synthesis goals. In a green synthesis of La2O3 NPs using plants, the plant extract is used as a surfactant that encompasses the biomolecule leds the bio-reduction of lanthanum salt into the La2O3 NPs. This review enlightens the synthesis, characterization, and applications of the La2O3 NPs obtained using various plant extracts.

Nowadays, metal-organic framework (MOF)-derived porous metal oxide nanoparticles (NPs) has attracted a great attention for remediation of environmental contamination. This work discussed the synthesis approach of the porous and single-phase TiO2 NPs via the thermal treatment of MIL-125 (Ti) at various temperatures. The influences of temperature on the single-phase synthesis and degree of crystallinity of this nanomaterial were investigated. It was revealed that 500 °C was the optimum temperature for the syn

In this study, MgO/CNTs nanocomposite was synthesized using a simple approach according to the hydrogen bonding between the oxygen atom in MgO and hydrogen atom in SWCNTs-COOH. The nanocomposite was characterized using the FESEM and EDS methods. The MgO/CNTs nanocomposite was used for amplification of the paste electrode (PE) at the presence of 1-methyl-3-buthyl imizazolonium tetrafluoroborate (MBITF) as the binder. The MgO/CNTs/MBITF/PE was used as an electroanalytical tool for electro-oxidation determination of vitamin B6 in food samples. In comparison to PE, the oxidation signal of vitamin B6 was improved up to 3.2 times at the surface of MgO/CNTs/MBITF/PE. At pH=6 as optimum condition, the MgO/CNTs/MBITF/PE revealed linear dynamic range of 0.1-400 µM for determination of vitamin B6 with the detection limit of 30.0 nM. In the final step, the MgO/CNTs/MBITF/PE showed acceptable recovery data for the determination of vitamin B6 in fruit juices samples, confirming the ability of the sensors in real sample analysis.

In this study, we discussed the synthesis of Pt doped NiO decorated single wall carbon nanotubes nanocomposite (Pt-NiO/SWCNTs/NC) and investigated the effect of this nanocomposite on the reduction of charge transfer resistance (Rct) in electrochemical systems (solution of 1.0 mM [Fe(CN)6]3-/4-+0.1 M KCl). For this goal, we synthesized the NiO nanoparticle, NiO/SWCNTs nanocomposite and Pt/SWCNTs nanocomposite and then mo

Graphene/hydroxyapatite nanocomposites (NCs) is attracted more attention in bone tissue engineering due to their osteoconductive properties. Adding different ionic substitutions to graphene/hydroxyapatite NCs may increase its osteogenic properties. In this research study, bismuth doped hydroxyapatite nano-rods (Bi-nHA) were decorated on the reduced graphene oxide (rGO) sheets. The formation and structure of the nanocomposites (rGO/Bi-nHA) was characterized using the transmission electron microscope (TEM), X-ray diffracti

The dendrimers are the macromolecules that branch out from the same nuclear and they finally reach the same central nucleus. The solubility of the dendrimer is strongly affected by the surface groups. These compounds are the ideal carriers for biomedical applications. One of the oldest identified dendrimer is poly (propylene imine) dendrimer (denoted as PPI dendrimer). The present study consists of two sections. In the first section, the interaction between the (PPI) dendrimer with different molar ratios of curcumin was investigated at the presence or absence of the ultrasonic waves. In the second section, the anti-cancer effects of this compound on BRC-9 cell line (of breast cancer cells) were investigated with the help of 3-(4, 5-dimethylthiazol-2-yl)-2, 5-diphenyl tetrazolium bromide (MTT) assay.