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Publications (38)
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Mercury is one of the main components of fluorescent lamps. Considering the adverse effects of mercury on human health and the environment, recovery of mercury-containing fluorescent lamps is very important in developed countries. The glass parts of used fluorescent lamps are among the dangerous wastes whose mercury content should be r...
The development of effective drug delivery systems is crucial for improving cancer treatment outcomes. A promising carrier using a combination of DNA and exosomes (EXO) was synthesized to sustain the release of the powerful anticancer drug 5‐fluorouracil (5‐FU). The carrier was prepared by encapsulating 5‐FU‐loaded exosomes (5‐FU.EXO) in the heated...
Abstract
This study uses noble evaluations in Density Functional Theory (DFT) framework to investigate the structural, electrochemical, magnetic, and electrical properties of AMn2O4 (A = Li, Na, Mg, and Al) cathode materials for various metal-ion batteries. The calculations are performed by four DFT methods (GGA/+U, LSDA/+U). Considering volume cha...
In this study, a DEFC with an anion-exchange membrane is investigated to evaluate fuel utilization both theoretically and experimentally. The effects of variations in the input fuel temperature and fuel concentration on fuel utilization and power density were analyzed through sensitivity analysis. To this end, for different test conditions containi...
This paper presents the synthesis of nano hydroxyapatite using deposition process and eggshell as a cost-effective starting material. This study investigates its potential as an effective adsorbent for heavy metals. Various analytical techniques, including X-ray diffraction (XRD), X-ray fluorescence spectroscopy (XRF), Fourier transform infrared (F...
Mercury is one of the most dangerous environmental pollutants due to its stability in the environment and bioaccumulation in the food chain. Regarding the adverse effects of mercury on human health and environment, huge efforts have been made throughout the world to reduce its undesirable impacts. Mercury is one of the main components of the low-co...
High entropy alloys, especially AlCoCrFeNi, have received much attention in recent years due to their unique properties. Therefore, the study of the various properties of this alloy has been the subject of recent fundamental research. In this study, the electrochemical behavior of zirconia-reinforced AlCoCrFeNi high entropy alloy has been investiga...
Li2FeSiO4 (LFS) has received remarkable attention due to its high thermal stability, environmental benignity, low cost, and low toxicity. However, the electrochemical performance of the material is restricted by achieving its high theoretical capacity (∼330 mA h g−1). Doping is a potentially effective method to enhance the electrical conductivity a...
As a high-capacity cathode material with a considerable cycle life, lithium metal orthosilicates have attracted much attention. In this paper, Li2FeSiO4, Li2FeSiO4−xClx and Li2FeSiO4−xFx are successfully synthesized via solid-state method. Li2FeSiO4−xFx is also composited with reduced graphene oxide (rGO). The X-ray diffraction patterns show 0.2% e...
High yield production of benzaldehyde in the solvent-free oxidation of benzyl alcohol by using green catalysts is highly desirable. In this work, calcium hydroxide derived from waste clamshell was used as low-cost and environmentally friendly catalyst support (CaSUP) for Pd and V nanoparticles. The physicochemical properties of the catalysts were a...
In this study, microstructural aspects and electrochemical properties of high pressure torsion (HPT)-treated austenitic NiTi alloy were investigated. Microstructural characterizations were performed by high-resolution transmission electron microscopy (HRTEM) and X-ray diffraction (XRD) analysis. Potentiodynamic polarization and electrochemical impe...
In one of our recent published work [Ghashghaie S., et al. Materials Letters, 2015. 141: p. 23–26.], we reported a successful electrophoretic deposition (EPD) of Pt/C on a non-conductive PTFE membrane to produce carbon electrode for CO electrochemical gas sensors (EGS). In the present work, the effect of deposition parameters such as applied field,...
A novel sustained release carrier of graphene oxide nanosheets functionalized by human serum albumin nanoparticles (FGO-NSs) was synthesized and characterized by field emission scanning electron microscopy (FESEM), zeta sizer analysis, absorption spectroscopy (UV–vis) and Fourier transform infrared spectroscopy (FTIR) studies. The cell viability of...
In the present study, a step by step process was applied to synthesize bimetallic electrocatalyst (Ru and Pt on VulcanXC-72R). This process can reduce the amount of platinum and increase the gas diffusion electrode (GDE) performance in the cathodic reaction of polymer electrolyte membrane fuel cells (PEMFCs). Using the impregnation by hydrothermal...
A series of diamond-like carbon thin films was applied on AISI 316L stainless steel substrates through a pulsed-direct current plasma-enhanced chemical vapor deposition technique to study the effects of working parameters (bias voltage and deposition pressure) on the microstructure and biocorrosion resistance of films. Raman spectra indicated that...
In the present research, diamond-like carbon (DLC) thin films were applied on steel substrates by means of pulsed-direct current (DC) plasma-enhanced chemical vapor deposition (PE-CVD). The effects of bias voltage and deposition pressure on the films’ structure and properties were investigated. The Raman spectra of the films revealed features typic...
In the present study, hybrid nanostructures of porous Co3O4 nanoball / carbon aerogel are prepared by in-situ growth of Co3O4 nanoballs with nanosized uniform structure within the pores of pre-synthesized atmospheric-pressure dried highly mesoporous carbon aerogel. Three-dimensional structure of the carbon aerogel with proper electrical conductivit...
In this paper, deposition of Multi-Walled Carbon Nanotube (MWCNT) on Poly-Tetra-Fluoro-Ethylene (PTFE) layer is studied for the purpose of gas sensing. Previously, Platinized Carbon (Pt/C) for sensor application was successfully deposited on thin PTFE layer, but it was difficult to deposit MWCNT on PTFE based on the same method. Three methods inclu...
In this study, hydrogenated amorphous carbon thin films, stracturally similar to diamond-like carbon (DLC), were deposited on the surface of untreated stainless steel (SS) implants and plasma nitrocarburized (CN-treated) implants using a plasma enhanced chemical vapor deposition (PECVD) method. The deposited DLC thin films on the CN-treated implant...
Human serum albumin nanoparticles (HSA-NPs) were synthesized using the modified desolvation method. Fourier transform infrared spectroscopy (FT-IR), electronic absorption spectroscopy (UV-Vis), Zeta Sizer as well as field emission scanning electron microscope (FE-SEM) of the sample confirmed the formation of HSA NPs with an average size of 68 nm. T...
The extensive research on the synthesis of nitrogen-doped carbon materials (NCMs) as non-precious metal catalysts (NPMCs) has shown a promising future for applying the NPMCs to catalyze the slow oxygen reduction reaction (ORR) in polymer electrolyte fuel cells (PEFCs) and, therefore, the widespread use of devices based on PEFCs. However, the main r...
In the present study, we aim to report on the applicability of electrophoretic deposition (EPD) technique for the deposition of Multi-Walled Carbon Nanotube (MWCNT) on Polytetrafluoroethylene (PTFE) membrane in non-aqueous media to fabricate the counter electrodes of electrochemical gas sensors. We also tried to compare the results with similar app...
Tyrosinase is a multifunctional copper-containing enzyme. It can catalyze two distinct reactions of melanin synthesis and benzaldehyde derivatives, which are potential tyrosinase inhibitors. To find the relationships between charge distributions of benzaldehyde and their pharmaceutical behavior, the present study aimed at investigating nuclear quad...
Artificial intelligence models have the capacity to eliminate the need for expensive experimental investigation in various areas of manufacturing processes, including the material science. This study investigates the applicability of adaptive neuro-fuzzy inference system (ANFIS) approach for modeling the performance parameters of thermal expansion...
In this study, oxides Ln0.6Sr0.4Co0.2M0.8O3−δ
(Ln = La,Nd and M = Mn,Fe) have been prepared and characterized to study the influence of the different cations on thermal expansion coefficient (TEC). TEC decreases favourably with replacement of Nd3+ and Mn3+ ions in the lattice. Nd3+ leads to decreasing ionicity of the Ln–O bond and phase transition...
Two series of Pd@Pt (Pd as core and Pt as shell) and Ru@Pd–Pt (Ru as core and Pt–Pd as shell) core-shell structures with different molar ratio of metals on Vulcan were prepared by a successive reduction procedure. The effect of Pd as core (Pt as shell) is compared with the effect of Pd–Pt alloy as shell (Ru as core) for oxygen reduction reaction (O...
In the present study, a electrophoretic deposition technique was successfully employed to deposit Pt/C particles on hydrophobic Polytetrafluoroethylene membranes in non-aqueous media for electrochemical gas sensing applications. Optical microscopy studies showed that uniform crack-free layers were obtained at potential interval of 30–50 V on the no...
The Nafion loading in multi-walled carbon nanotube (MWCNT) composites with Nafion used as Pt support in the oxygen reduction reaction (ORR) has been studied. We varied the amount of Nafion in these composites and added a Pt loading of 0.3 mg cm−2 to the catalyst layer. The performance of these electrodes in the ORR was measured with linear sweep vo...
In this study, the effects of the addition of multi-wall carbon nanotubes (MWCNTs) into a microporous layer (MPL) containing Vulcan XC72R on the oxygen reduction reaction (ORR) were studied. We tested various percentages of MWCNTs and Vulcan XC72R in the MPLs of gas-diffusion electrodes (GDEs) with various Pt loadings in the catalyst layer. The per...
In this work, a gas diffusion electrode (GDE) with a catalyst layer containing a mixture of Nafion and polyaniline (PANI) nonofiber was prepared by a simple method. The resulting GDE had good mechanical properties and acceptable electrochemical activity. This type of modified electrode could potentially be applied in the development of membrane–ele...
Ab-initio quantum mechanical calculation is used to calculate the 14N and 2H nuclear quadrupole resonance (NQR) parameters (η and χ) of CH3N2+ ion and the ion shellvated by H2 molecules [CH3N2+(H2)n=1–9]. On the basis of NQR parameters, three distinct shells (A, B and C) were identified. To obtain these data we had to evaluate the electric field gr...
In this Letter NQR frequencies of 35Cl in some organo-germanium chlorides are calculated by an ab initio method. The Ge–O distances in structures (1)–(3) (Fig. 1) were varied in the range 1.5–3 Å. After the optimization of the geometry of molecule in each selected distance, the 35Cl frequencies were calculated (νQcal). Employing the correct value o...
