Yousef Zeraatkish

Electrochemical properties of various rock-shaped-CuO/graphite (G) composites and monoclinic structure CuO nanoparticles as the cathode versus a zinc plate as the anode in a 4M NaOH electrolyte were elucidated by electrochemical impedance spectroscopy (EIS) and chronopotentiometry (CP) in a two electrode configuration cell. Various values of G 9, 16 and 28 wt% were prepared and studied as cathode materials for an alkaline Zn-CuO Battery. The EIS results demonstrated that increasing the mass ratio of G caused significant decrease in charge transfer resistance (Rct) and capacitive behavior of the electrode. Also, the discharging voltage of the cells was increased due to raising the mass ratio of the graphite. Besides, electrochemical properties of the monoclinic structure CuO nanoparticles as cathode material in the alkaline battery was compared with a rock shaped CuO particles. The results showed that the discharged voltage of monoclinic CuO nanoparticles is less than another rock sh...

Pluronic P123, a type of Poloxamers materials, was examined as an inhibitor for decreasing zinc corrosion in alkaline media (4.0 M NaOH). This material was used in the form of the particles dispersed in electrolyte (suspension form). Its effect was examined by electrochemical methods potentiodynamic polarization (Tafel) and electrochemical impedance spectroscopy (EIS). Scanning electron microscopy (SEM) was used to analysis the electrode surface in presence and abcense of the inhibitor. The obtained results indicate that P-123 inhibits zinc corrosion in 4.0 M NaOH electrolyte and zinc corrosion decreases with increasing the value of P-123 particles. Moreover, the results of potentiodynamic polarization reveal that the inhibitor affects both the anodic and cathodic branch, so it is mix type. The obtained inhibition efficiency from potentiodynamic polarization and EIS showed a reasonable agreement. In addition, for battery application, it was found that P-123 increases Zn/CuO battery ...

The present study has investigated the synthesis of copper nanoparticles via copper dismutation reaction in an aqueous solution and ambient conditions. Copper (II) chloride hydrate ( ), sodium oleate (SO), sodium chloride (NaCl) and ethylene diamine (EN) have been used as copper (I, II) ions source, surfactant, chloride ions supplier and ligand, respectively. Also, an amount of hydrochloric acid (HCl) was used as a multiplier for reaction rate. To perform copper dismutation reaction in the aqueous solution, the copper (I)–chloride complexes were first prepared from  at a high concentration of chloride solution. Then, sodium oleate was added to solution as a size modifier. The reaction proceeded through the addition of ethylenediamine as a ligand to the solution. The crystalline structure, size, and morphology of the copper nanoparticles were characterized using X-ray diffraction (XRD), transmission electron microscopy (TEM), and scanning electron microscopy (SEM) techniques, respect...

This study reports the simple process to synthesis of CuO/CuI nanocomposite in a non-aqueous solution. In the conducted experiments CuI and Dimethyl Sulfoxide (DMSO) were used as the precursors. Moreover, DMSO had role of solvent and ligand simultaneously. In experiments the effects of oleic acid as the particles size modifier, temperature and concentration were investigated. Crystalline structure, size and shape of the CuO/CuI nanocomposite were characterized using X-ray diffraction (XRD), and scanning electron microscopy (SEM) techniques, respectively. The results indicated that particles size is less than 50 nanometers and are spherical and mono-dispersed in shape and size. In addition, the Crystallite sizes were estimated via the Scherrer equation.

In this study, copper (II) oxide and copper/copper (I) oxide mixture nanoparticles have been prepared via copper disproportionation reaction in non-aqueous solution. The disproportionation reaction in dimethyl solfoxide (DMSO) was used to synthesis a Nano metallic element without any modification for the first time. Copper (I) Iodide (CuI), DMSO and ethylene diamine (en) have been used as copper (I) ion source, solvent and ligand, respectively. In this investigation the experiments were performed at two conditions. The products were characterized using both X-ray diffraction (XRD) and scanning electron microscopy (SEM). The XRD analysis of the solids produced at ambient atmosphere depicts the formation of pure copper (II) oxide (CuO) phase. The results also indicate that the achievement of the process after removal of oxygen and at N atmosphere yields a mixture of metallic copper (Cu°) and copper (I) oxide 2 (Cu O). The SEM images of both products showed that the particle sizes are ...

2 Abstract: In this study, copper (II) oxide and copper/copper (I) oxide mixture nanoparticles have been prepared via copper disproportionation reaction in non-aqueous solution. The performance of disproportionation reaction in dimethyl solfoxide (DMSO) was used to synthesis a Nano metallic element without any modification for the first time. Copper (I) Iodide (CuI), DMSO and ethylene diamine (en) have been used as copper (I) ion source, solvent and ligand, respectively. In this investigation the experiments were performed at two conditions. The products were characterized using both X-ray diffraction (XRD) and scanning electron microscopy (SEM). The XRD analysis of the solids produced at ambient atmosphere depicts the formation of pure copper (II) oxide (CuO) phase. The results also indicate that the achievement of the process after removal of oxygen and at N2 atmosphere yields a mixture of metallic copper (Cu ) and copper (I) oxide (Cu O). The SEM images of both 0 2 products showe...

In this study, copper (II) oxide and copper/copper (I) oxide mixture nanoparticles have been prepared via copper disproportionation reaction in non-aqueous solution. The performance of disproportionation reaction in dimethyl solfoxide (DMSO) was used to synthesis a Nano metallic element without any modification for the first time. Copper (I) Iodide (CuI), DMSO and ethylene diamine (en) have been used as copper (I) ion source, solvent and ligand, respectively. In this investigation the experiments were performed at two conditions. The products were characterized using both X-ray diffraction (XRD) and scanning electron microscopy (SEM). The XRD analysis of the solids produced at ambient atmosphere depicts the formation of pure copper (II) oxide (CuO) phase. The results also indicate that the achievement of the process after removal of oxygen and at N2 atmosphere yields a mixture of metallic copper (Cu ) and copper (I) oxide (Cu O). The SEM images of both 0 2 products showed that the p...