Eslam Ghareshabani

Sahand University of Technology | SUT · Faculty of Basic Sciences

In this study, La0.8Zn0.2MnO3 nanocatalysts were synthesized using sol-gel method at different citric acid to metal nitrate (C/N) ratios and different calcination temperatures. The synthesized catalysts were used for oxidation of benzene, toluene, and xylene (BTX) in a catalytic-plasma hybrid reactor at different input voltages of 5, 7.5, 10, 12.5,...

The present study has focused on the degradation of phenazopyridine (PhP) as an emerging contaminant through catalytic ozonation by novel plasma treated natural limonite (FeOOH·xH 2 O, NL) under argon atmosphere (PTL/Ar). The physical and chemical characteristics of samples were evaluated with different analyses. The obtained results demonstrated h...

High-performance novel iron oxyhydroxide (limonite) nanostructure, with improved surface reactive sites, was prepared via one-pot, eco-friendly, free precursor and cold glow discharge N2-plasma technique. Natural and plasma treated (PTNL/N2) limonite samples were characterized by FESEM, XPS, XRD, FTIR, AAS, EDX, BET/BJH and pHpzc to confirm the suc...

Manganese oxide catalysts have been synthesized from the used batteries via hydrometallurgical method and effect of hydrometallurgical parameters such as the effect of acid type (H2SO4, HNO3, HCl), acid concentration (0.5, 1, 1.5, 2 %v/v) and powder to acid ratio (1/50, 1/60, 1/70, 1/80) were in detail investigated. The physico-chemical properties...

In this research, degradation of three sulfonamide antibiotic compounds (SNAs) such as Sulfasalazine (SSZ), Sulfamethoxazole (SMX) and Sulfamethazine (SMT) as well as Metronidazole (MNZ) were investigated for the first time using experimental, modeling and simulation data under O3, H2O2, and O3/H2O2 systems. The kinetic and synergistic study confir...

Plasma-treated goethite nanoparticles with high surface area and improved density of surface hydroxyl groups were synthesized from natural goethite (NG) using Argon (PTG-Ar) and Nitrogen (PTG-N 2) as plasma environment to enhance the performance of heterogeneous catalytic ozonation process. Synthesized samples were characterized by FESEM, EDX, TEM,...

Plasma-treated goethite nanoparticles with high surface area and improved density of surface hydroxyl groups were synthesized from natural goethite (NG) using Argon (PTG-Ar) and Nitrogen (PTG-N2) as plasma environment to enhance the performance of heterogeneous catalytic ozonation process. Synthesized samples were characterized by FESEM, EDX, TEM,...

Degradation of SSZ, SMX, SMZ and MTZ molecules was investigated under O 3 , H 2 O 2 and O 3 /H 2 O 2 processes. • The kinetic experimental study and syn-ergistic effect of O 3 /H 2 O 2 reaction were evaluated. • ANN and CCD based-RSM modeling were developed to predict degradation efficiency (%) of SNAs and results were compared. • Second order quad...

In this experimental study, a 1.5-kJ plasma focus device of Mather type was employed to grow titanium aluminum nitride (TiAlN) coatings at room temperature on 316 stainless steel sub-layer. The anode of the device was made of Titanium and Aluminium. A mixture of N2 and Ar gases was used as the work gas for TiAlN deposition. TiAlN nanoparticles were...

Bifunctional nanocatalyst of NiMn over alkali activated montmorillonite was prepared with different Mn contents. The prepared catalysts were examined in hybrid plasma-catalytic system for oxidation of volatile organic compounds. The prepared catalysts were characterized by XRD, FESEM, BET, FTIR and EDX analyses. FESEM pictures showed complete and u...

Dense plasma focus (DPF) nitriding method was used to coat titanium nitride (TiN) on NiTi alloys as bone implant. These coatings were developed to modify the surface properties, such as corrosion resistance and biocompatibility. This method was done with a pressure of 2 mbar and voltage of 8 kV under pure nitrogen gas and mixed gas of nitrogen and...

A 1.5 kJ pulsed low energy Mather type plasma focus (PF) is used to deposit thin films of alumina (α-Al2O3) on Si (1 0 0) substrates. The PF device with its anode made of aluminum was operated with argon-oxygen mixture as the filling gas. The Al2O3 thin film samples were prepared using 10, 20 and 30 successive shots with substrates placed at 60 mm...

A new low energy (1.5 kJ) Mather-type dense plasma focus, called Sahand University of Technology Dense Plasma Focus (SUT-DPF) device has been designed, constructed and operated. The paper reports on the preliminary results with argon as filling gas. A Rogowski coil has been used to measure the experimental discharge current. The current signal cont...

A low energy (60 J) miniature plasma focus with novel configuration was used to deposit diamond-like carbon films at room temperature on Si (1 0 0) substrates. The samples were deposited using 200 numbers of shots, and at off-center position with argon and methane as filling gases. The structure of deposited films are determined by X-ray diffractom...

In this paper the nitrogen ion properties (maximum energy, current density and the most probable energy) are investigated by using Faraday cup in a time of flight method. These ions are produced in a Filippov type plasma focus (Sahand Facility) device and the Faraday cup was placed in a distance range of 18–24 cm from the top of the anode. Maximum...

Pulsed laser deposition synthesized ZnO thin films, grown at 400°C substrate temperature in different oxygen gas pressures, were irradiated with 6 shots of pulsed nitrogen ions obtained from 2.94kJ dense plasma focus to achieve the nitrogen doping in ZnO. Structural, compositional and optical properties of as-deposited and nitrogen ion irradiated Z...

Nanostructured multiphase Ti(C,N)/a-C films were deposited using a 3.3kJ pulsed plasma focus device onto silicon (100) substrates at room temperature. The plasma focus device, fitted with solid titanium anode instead of usual hollow copper anode, was operated with nitrogen and Ar/CH4 as the filling gas. Films were deposited with different number of...

Diamond-like carbon (DLC) films were deposited on Si (1 0 0) substrate using a low energy (219 J) repetitive (1 Hz) miniature plasma focus device. DLC thin film samples were deposited using 10, 20, 50, 100 and 200 focus shots with hydrogen as filling gas at 0.25 mbar. The deposited samples were analyzed by XRD, Raman Spectroscopy, SEM and XPS. XRD...

One of the most important factors for optimizing the plasma focus device operation is the dynamics of the plasma. In this paper, we investigated the profile and dynamics of the current sheath by measuring the velocity and distribution of current sheath in Sahand as a Filippov type plasma focus device. For this purpose, the discharge is produced in...