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A new graphene-cerium dioxide nanocomposite-modified glassy carbon electrode (GR/CeO 2 /GCE)-based sensor has been developed for sensitive voltammetric quantification of thrombin inhibitor anticoagulant drug dabigatran etexilate (DAB) in solubilized system of Triton X-100. The voltammetric studies of DAB at GR/CeO 2 /GCE sensor exhibits a well defined cathodic peak for...
Effect of doping gallium is studied, and thereby, its consequence on the electrical properties of lithium-based Li 1.3 Al 0.3 − x Ga x Ti 1.7 (PO 4 ) 3 (LAGTP) system (where x = 0.01, 0.03, 0.05, and 0.07) is reported. X-ray diffraction (XRD) data is used to interpret...
A solid polymer blend electrolyte system based on polyvinyl alcohol (PVA) and polyethylene glycol (PEG) complexed with NaClO 4 was prepared using solution cast technique. The structural properties of these electrolyte films were examined by X-ray diffractrometry (XRD) studies. The XRD data revealed that the amorphous domains of polymer blend matrix increased with increase of sodium...
A non-enzymatic glucose sensor was successfully fabricated by immobilization of bimetallic hollow Ag/Pt nanoparticles (BH-Ag/Pt NPs) using the galvanic replacement reaction onto the surface of the pretreated pure Au electrode. The morphology and composition of the BH-Ag/Pt NPs were investigated by high-resolution transmission electron microscopy (HRTEM), scanning transmission electron microscopy...
A novel ferrocenyl-terminated percec-type dendron 3,4,5-tris (11-ferrocenylundecyloxy) benzoic acid (Fc 3 CO 2 H) was synthesized for the first time through nucleophilic substitution reaction between 11-bromoundecyl ferrocene and methyl 3,4,5-trihydroxybenzoate, followed by a hydrolysis process. The structural characteristics of the resultant dendron Fc 3 ...
A nanosensor was introduced for a sensitive determination of methyldopa using multiwall carbon nanotubes (MWCNTs) decorated with ferrite nickel nanoparticles (NiFe 2 O 4 ) on a glassy carbon electrode. The electrochemical activity of the modified electrode for the determination of methyldopa was investigated using differential pulse voltammetry, cyclic voltammetry, and...
We have developed a novel material with a hybrid multiwalled carbon nanotube–graphitic platelet architecture for lithium ion battery (LIB) anode that requires no additional aggregate and support materials such as polymeric binders and current collectors of copper or aluminum foils. The absence of these inhomogeneous additives signifies a weight increase of the anode active materials, which contributes...
Intensive research aims to reduce the band gap of TiO 2 -based semiconductors by the incorporation of a range of cations and anions in order to enhance their performance in solar energy conversion. In this work, we show that the band gap, as well as the related semiconducting properties, may be modified by impositions of variable oxygen activity in the oxide lattice instead of doping...
In this paper, we present results of our research on developing of new deoxyribonucleic acid (DNA)-based conducting membranes for application in electrochromic devices. Improvements of performances of DNA-based solid bioelectrolyte in smart windows were achieved by adding plasticizer like glycerol and different amounts of photosensitive chromophores, such as Nile Blue. The results were obtained...
A novel Pt nanoflowers/polyaniline/nitrogen-doped graphene (PtNFs/PANI/NG) electrocatalyst was prepared by dispersing Pt nanoflowers (PtNFs) onto a polyaniline (PANI) grafted N-doped graphene (NG) matrix through a two-step electrochemical process. Firstly, NG was prepared by a hydrothermal reaction of graphene oxide (GO) with urea, and then electrochemical polymerization of aniline at NG was...
Methyl 3-((2-mercaptophenyl) imino) butanoate (MMPB) was designed and synthesized as a corrosion inhibitor, which is functionalized with adjacent azole and thiol groups and a carboxylate tail. The inhibition efficiency of this compound has been investigated in different concentrations of HCl solutions. Then, the effect of temperature and inhibitor concentration was studied for further discussion...
Conductivity and dielectric behavior of a synthesized NH 4 I-doped polymeric electrolytes are discussed in terms of σ , N / N0 , permittivity, loss factor, modulus, and Kohlrausch–Williams–Watts (KWW) exponent β , with the variation of salt concentration and temperature. System, having 50 wt% salt, has maximum conductivity (∼10...
Lithium vanadium phosphate (Li 3 V 2 (PO 4 ) 3 ) has been extensively studied because of its application as a cathode material in rechargeable lithium ion batteries due to its attractive electrochemical properties, including high specific energy, high working voltage, good cycle stability, and low price. In this review, the preparation of technology,...
To improve the copper corrosion resistance of epoxy-functionalized hybrid sol–gel monolayers (Hy) consisting of 3-glycidoxypropyltrimethoxysilane (GPTMS-functional monomer) and tetraethoxysilane (TEOS-reticulating agent), the copper surface was modified by a well-defined inhibitor viz., thiosemicarbazide (TSC). At first, the copper surface was activated by TSC monolayers through Cu–S bonds which end...
Fe 2 O 3 /reduced graphene oxide (RGO) nanocomposites were prepared by a hydrothermal reduction using Fe(OH) 3 and graphene oxide (GO) precursors, which were assembled electrostatically by mixing a negatively charged GO aqueous suspension with a positively charged Fe(OH) 3 solution at room temperature. The resulting composites were characterized...
The KAlP 2 O 7 compound was prepared by conventional solid-state reaction technique. The structure is confirmed by X-ray powder diffraction. The frequency-dependent electrical properties of the sample were investigated in the temperature range of 528–668 K and in the frequency range of 209 Hz–5 MHz by impedance spectroscopy. The ac conductivity has been fitted and studied...
Carbon-coated LiNi 0.5 Mn 1.5 O 4 cathode was prepared using phenolic resin as a carbon precursor. The morphology and structure of the prepared samples were characterized by powder X-ray diffraction, scanning electron microscopy, transmission electron microscopy, and thermogravimetry, and its performance as cathode of lithium ion battery was investigated...
Activated carbon was prepared with active carbon and carbon nanotubes (CNTs) as carriers of sulfur lithium–sulfur battery anode. The preparation was performed by sealing and heating molten lithium–sulfur batteries with different ratios of CNT, which was the positive active material. X-ray diffraction (XRD) pattern showed that composite material had more amorphous structure; the sample of C/CNT ratio...
Lithium ion batteries are an important area of research. The use of biodegradable polymers in batteries has gained importance recently. To have high efficiency, the lithium ions available for conductivity should be high. Understanding the effect of LiClO 4 upon the assembly of polymers could be useful. For that, chitosan films with LiClO 4 were chosen. We have used various...
With sodium hexametaphosphate ((NaPO 3 ) 6 ) as the inorganic structure-directing agent, the precursor of Co 3 O 4 was obtained by the method of simple liquid precipitation. Then Co 3 O 4 μm particles with octahedral crystal shape were gotten by calcinating the precursor. The physicochemical features of the octahedral...
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