A structural and electrochemical study of some oxovanadium(IV) heterochelate complexes
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Dipicolinic acid
Metal salen complexes
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Electrochemical reactions involved in the electrodeposition of PbSe and the electrochemical behaviour of the related precursors, HSeO3− and Pb(EDTA)2−, have been studied for the first time by combined electrochemical quartz crystal microbalance and cyclic voltammetry measurements. Formation of PbSe was found to occur by an induced codeposition mechanism via a six-electron reduction reaction. HSeO3− is reduced by a four-electron reaction but the electrode becomes passivated. The reduction and oxidation of Pb(EDTA)2− occur via two-electron mechanisms, on the other hand, during the oxidation adsorption reactions are also observed.
Quartz Crystal Microbalance
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Abstract The electrochemical behaviour of the title complexes (I)‐(IV) is investigated by cyclic voltammetry and voltammetry at a Pt rotating disk electrode in nonaqueous media (CH 2 Cl 2 ).
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In this study, a rare-earth hybrid luminescent material (lanthanide@COF) was constructed for the detection of a biomarker for anthrax (dipicolinic acid, DPA).
Dipicolinic acid
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The electrochemical behavior of V 2O 3, V 2O 5 and NH 4VO 3 at carbon paste electrode(CPE) in H 2SO 4 solution were investigated by cyclic voltammetry. The results showed that for vanadium(Ⅲ) compound there appeared two reduction peaks but three oxidation peaks in cyclic voltammograms in different H 2SO 4 concentration solutions, while for two vanadium(Ⅴ) compounds there were four reduction peaks and four oxidation peaks, quite close to each other. The corresponding redox peaks were reasonably analyzed and the reaction mechanism has been discussed briefly.
Carbon paste electrode
Carbon fibers
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Dipicolinic acid
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Cyclic voltammetry,IR spectroelectrochemistry,cyclic voltabsorptometry and derivative cyclic voltabsorptometry techniques were used to investigate the electrochemical reduction of tetramethyl-p-benzoquinone(TMBQ) in CH3CN solution.The experimental results showed that the electrochemical reduction of TMBQ is not simple two-step single electron transfer process.Further study indicated that the reduction process is coupled with following chemical reaction.An irresversible oxidation peak at-0.32 V was observed.The result suggests that dimerization reaction occurred during the electrochemical reduction process of TMBQ.In situ IR spectroelectrochemistry further confirmed the formation of dimers.
Benzoquinone
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Hydroxylamine
Potassium hydroxide
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Chronoamperometry
Chemical reduction
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