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An attempt is made to synthesize high temperature iron phosphide phase over copper substrate at room temperature via simple and cost-effective electrodeposition technique using aqueous acidic electrolyte. The phosphorus content in alloys varied with its source's composition in the electrolyte. All as-obtained deposits are annealed at 400 °C for 3 h under constant inert gas flow rate in a tubular furnace...
Two siloxane-based di-urethanesil frameworks incorporating poly(oxyethylene) (POE) chains have been synthesized by the sol–gel process and doped with magnesium triflate (Mg(CF3SO3)2) with the goal of developing electrolytes for the fabrication of solid-state rechargeable magnesium batteries. In these matrices, short POE chains are covalently bonded to the siloxane network via urethane linkages. The...
Bi4 − xMxV2O11 − δ (M = La, Gd; 0.1 ≤ x ≤ 0.3) is synthesised by a solid state reaction method to study the effect of La3+ and Gd3+ substitution for Bi on the structural and optical properties. The as-prepared samples are characterised by X-ray diffraction, Fourier transform infrared analysis, UV–visible spectroscopy, scanning electron microscopy and...
Under an aid of ultrasonic, tetraoxalyl ethylenediamine melamine resin-coated multiwalled carbon nanotubes were prepared for Ni(II) sensing in aqueous solution. The processes involved the fabrication of tetraoxalyl ethylenediamine melamine resin by one pot way, the coating of tetraoxalyl ethylenediamine melamine resin at multiwalled carbon nanotubes (MWCNTs), and the determination of Ni(II). The present...
Nano-Li2FeSiO4/C composites were prepared from three kinds of nano-SiO2 (their particle sizes are 15 ± 5, 30 ± 5, and 50 ± 5 nm, respectively) by a traditional solid-state reaction method. The as-prepared materials were characterized by X-ray diffraction (XRD), scanning electron microscopy (SEM), elementary analyzer, Brunauer–Emmett–Teller (BET) analysis, galvanostatic charge–discharge test, and electrochemical...
Photoelectrochemical properties of FTO/BiVO4 electrode were investigated in different electrolytic solutions, potassium chloride (KCl) and sodium sulphate (Na2SO4), and under visible light irradiation condition. In order to accomplish that, an FTO/BiVO4 electrode was built by combining the solution combustion synthesis technique with the dip-coating deposition process. The morphology and structure...
Submicron rod LiFePO4/C has been synthesized via a facile hydrothermal process. The morphology, crystal structure, and charge–discharge performance of the prepared samples were characterized by scanning electron microscopy (SEM), transmission electron microscopy (TEM), X-ray diffraction (XRD), and galvanostatic charge–discharge testing. The SEM and TEM illustrate that submicron rods with a width of...
Co-doped samples of Ce0.95−xCa0.05SrxO1.95−x, where (x = 0.00, 0.01, 0.02, and 0.03), have been prepared by auto-combustion method and characterized to explore their use as a solid electrolyte for intermediate temperature solid oxide fuel cells (IT-SOFCs). Crystal structure, microstructure, and ionic conductivity have been characterized by X-ray diffraction, scanning electron microscopy, and impedance...
The electrochemical behavior of Zn in 0.5 M NaOH solutions containing various concentrations (0.01–0.1 M) of ClO3− or ClO4− anions was studied with potentiodynamic anodic polarization and chronoamperometry techniques. Microstructural and topographical characterization of the pitted surfaces was carried out by ex situ scanning electron microscopy and atomic force microscopy examinations. Addition...
The corrosion inhibition of mild steel in 0.5 M sulphuric acid by aqueous and acid extracts of leaves of Morinda tinctoria was studied using weight loss, colorimetric and electrochemical techniques. Results obtained indicate that both the extracts are effective in sulphuric acid medium and the efficiency decreases with increase in temperature. Added halide additives improve the efficiency of the inhibitor...
The thermodynamic properties of alkaline earth ruthenate ARuO3 (A = Ca, Sr, and Ba) perovskites have been investigated for the first time by means of a modified rigid ion model at temperature 1 K ≤ T ≤ 300 K. As strong electron–phonon interactions are present in these compounds, the lattice contribution to the specific heat deserves proper attention. The values of specific heat calculated by us have...
A sensor for the highly sensitive determination of Sudan I based on the amplified electrochemical response of mesoporous TiO2-decorated graphene (GN–TiO2) was fabricated. The nanoparticles of TiO2 arrayed densely and uniformly on the GN sheets, as confirmed by field emission scanning electron microscopy and transmission electron microscopy images. The electrochemical behavior of Sudan I at this sensor...
An experimental study of the thermolysis mechanism of FeC2O4, NH4H2PO4, Li2CO3, and citric acid from the viewpoint of the usage of a mixture of these compounds in lithium power engineering for the solid-state synthesis of LiFePO4 and its composite with carbon LiFePO4/C as well as comparison of experimental data with thermodynamic calculations were made in the temperature range from 25 up to 1,000 °C...
Nanocomposite polymer electrolyte thin films of polyvinyl alcohol (PVA)-orthophosphoric acid (H3PO4)-Al2O3 have been prepared by solution cast technique. Films are irradiated with 50 MeV Li3+ ions having four different fluences viz. 5 × 1010, 1 × 1011, 5 × 1011, and 1 × 1012 ions/cm2. The effect of irradiation on polymeric samples has been studied and characterized. X-ray diffraction spectra reveal...
MnC2O4/graphene composites are prepared by a facile hydrothermal reaction with KMnO4 using ascorbic acid as a reducing agent. Olive-like MnC2O4 particles are distributed uniformly on the surface of graphene sheets. The composites are evaluated as supercapacitor electrodes, which show that the specific capacitance of MnC2O4/graphene composites is 122 F g−1, more than twice as high as that of free MnC...
Tin sulfide (SnS) nanorods have been synthesized through a facile template-free solvothermal route and characterized using XRD, SEM, and TEM. Results indicate that the as-prepared SnS nanorods are 30–100 nm in diameter and ~1,000 nm in length. When used as an anode material, the nanorods exhibit enhanced lithium ion storage properties with high reversible capacity and good cyclic performance. The...
New nanostructured composite system (1 − x)penton/xAgI (where 0 < x < 1) was synthesized by a solution-based technique, which involves the process of modification of polymer surface. Samples of the composite system were characterized by scanning electron microscopy, energy-dispersive X-ray spectroscopy, X-ray diffraction, and electrical impedance spectroscopy. It was shown that AgI nanoparticles...
In the present study, glasses from the three different compositional triangles in the BaO–B2O3–SiO2 system with fixed B2O3/SiO2 ratio and different BaO/SiO2 molar ratios (designated as Ba32, Ba37, and Ba42) were prepared, and suitability of them as sealant in solid oxide fuel cells were investigated. Structure of the glasses was characterized with Raman spectroscopy. According to the results, the...
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