Có 16+ tài liệu thuộc chủ đề "Cyclic voltammetry"
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Cyclic voltammetry behavior of tamoxifen in different electrolytes,. electrochemical characterization, and its measurement by differential pulse anodic voltammetry. Abstract: Cyclic voltammetry (CV) was performed on tamoxifen (tam) using different electrodes and in various acidic electrolytes containing 10% v v − 1 methanol (MeOH). Tam oxidation was found to be most favorable using 0.1 mol L − 1 H 2 SO...
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Influence of manganese content on the supercapacitive performance of PbO 2 –MnO 2 electrodes. Abstract: PbO 2 –MnO 2 electrodes were prepared by electrochemical codeposition methods. The content of manganese in the electrodes increased with the increase in manganese ion concentration in the solution, which can reach 48.4%. Cyclic voltammetry and galvanostatic charge–discharge measurements were used to evaluate the influence...
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Multiwall carbon nanotube paste electrode as a sensor for sensitive determination of deferasirox in the presence of uric acid: application for the analysis of. Abstract: In this work, the electrochemical oxidation of deferasirox at a multiwall carbon nanotube paste electrode (MWCNTPE) was described. The electrochemical behavior of deferasirox was studied using cyclic voltammetry and chronoamperometry techniques and parameters such as...
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Metal nanoparticles/carbon nanotube modified electrodes for voltammetric determination of boron. Abstract: This study describes a sensitive and accurate voltammetric method for determination of boron using metal nanoparticles/carbon nanotube modified electrodes. The oxidation peak of Alizarin Red S (ARS) at –0.59 V in the boron- ARS complex formed in ammonium/ammonia buffer solution (pH 8.5) was evaluated as a response. The characteristics...
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The dependence of current intensities and potentials on pH, concentration, scan rate, and nature of the buffer was investigated. The outcome is supported by density functional theory computations indicating the transfer of 4-e − /H. and 8- e − /H + couples involved in the oxidation mechanisms of CRM, DMC, and BDMC, respectively, leading to the formation of the same...
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doi:10.3906/kim-1901-13 h t t p. CV and chronoamperometric studies were conducted to evaluate the electrochemical current of the modified electrodes. For the electrode with MPPy, the linear range was 0.5–10.82 mM (R 2 = 0.99). These ions change the electrical properties of the sample due to an increase in the pH of the solution according to the Nernst equation, which...
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In silico and in vitro evaluation of the biological activity of some organic sulfur-containing compounds. The effect of the organic sulfur compounds on the rate of generation O. 2 on adrenaline oxidation in an alkaline medium and on the ability of the biopreparation, based on the liver of Russian sturgeon, to deactivate O. The effect of the organic sulfur compounds...
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doi:10.3906/kim-1907-73 Research Article. Thermal and electrochemical properties of the target compounds were also studied. Cyclic phosphazenes are an important inorganic group of compounds that can be easily substituted using nucleophilic compounds such as phenols, alcohols, and amines via halogen atoms, which are bound to phosphorus atoms [12–15]. To determine the fluorescence quantum yields ( Φ F ) for the target...
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doi:10.3906/kim-2003-56 h t t p. Voltammetric determination of itopride using carbon paste electrode modified with Gd doped TiO 2 nanotubes. Carbon paste electrode has been fabricated and mixed with Gd doped and undoped TNT to form a nanocomposite working electrode. Comparison of bare carbon paste electrode and Gd doped and undoped TNT carbon paste electrode for M K 4 [Fe(CN)...
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doi:10.3906/kim-2008-48. Electrochemical properties of phthalocyanines in the electrolytic solution, are dependent ontheir energy values of the HOMOs and LUMOs of the frontier orbitals [15]. Electrochemical properties of the proposed compounds may have the possible potential usage in electrocatalysis, electrosensing, and electrochromic devices. The optimized molecular structure and gauge-including atomic orbital (GIAO) 1 H and 13 C NMR chemical shift values...
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Most of the researches on the PEMFCs were focused on improving the catalytic activity of the cathode electro-catalysts, where the ORR takes place. ORR slow rates were responsible for about 70% of the total losses that occur in PEMFCs [5–6]. Some of reviews suggested the Pt-based alloys on the enhancement of the kinetics in order to create the enveloped non-Pt...
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Effect of current density on the microstructure and morphology of the electrodeposited nickel coatings. The improvement relies on the formation of single or multilayer coatings on the surface of metals. Many experimental works were published [1–5] to understand the relation between electrodeposition parameters and metallurgical states of the electrodeposits. Properties of the deposited are strongly dependent on the experimental parameters...
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and OCH 3 groups at the o-, m. and p -positions of the 1-phenyl ring and an OCH 3 group at the p -position of the 3-phenyl ring. There was a correlation between the absorption and electrochemical properties. Formazans are colored compounds owing to the conjugated double bonds they contain. 1−4 Their derivatives containing electron- donating and electron-withdrawing groups at...
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Abstract: The synthesis of novel, symmetrical, tetrasubstituted manganese phthalocyanine complexes bearing 4 hexylthio pentafluorobenzyloxy tetrafluoro-4’-hexylthio-benzyloxy, and tetrafluoro-4’- pentoxy-benzyloxy units is reported. The electrochemical properties of the manganese phthalocyanine com- plexes were investigated by cyclic and square wave voltammetry and the nature of the observed redox processes was studied by spectroelectrochemistry.. Phthalocyanines (Pcs) are one of the porphyrin analogs that possess...
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Efficient multicomponent synthesis of 1,2,3-triazoles catalyzed by Cu(II) supported on PEI@Fe 3 O 4 MNPs in a water/PEG 300 system. Abstract: A highly dispersible and magnetically recoverable Cu-PEI@Fe 3 O 4 MNPs catalyst was prepared and success- fully applied in one-pot three-component coupling of terminal alkynes, sodium azide, and alkyl bromides/chlorides in water to give 1,4-disubstituted 1,2,3-triazoles with good to...
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In recent years, electrochemical sensors are increasingly utilized due to low cost, ease of use, portability, mass production capabilities, and simplicity of the structure. One of the most significant advantages of SPEs is having the ability to analyze using a small volume of analyte solution [4]. characterized multiple structures of the Fe L-edges of K 4 Fe(CN) 6 and K...