7 results for “Electrochemical Impedance”

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Research ArticleOpen accessPhrase in the titleThe Application of Electrochemical Impedance Techniques in Analyzing the AC Response of Some Two-electron Transfer Dye SystemsFarouk RashwanThe Electrochemical Impedance Spectroscopic techniques (EIS) were used to investigate the behavior of some dye compounds (quinoid systems) characterized with 2e-transfer processes. For this purpose, Alizarin Red S (ARS), Alizarin Cyanine (AC), Alizarin Viridin (AV) and carminic acid were chosen for the measurements. The EIS experiments were performed using a small AC amplitude (10 mV p-p) in addition to a … …American Journal of Applied Sciences, Vol. 2, Issue 12 · 31 Dec 2005 · 6,780 accessesView PDF Cite

Research ArticleOpen accessPhrase in the titleComparative Study by Electrochemical Impedance Spectroscopy (EIS) On The Corrosion Resistance of Industrial and Laboratory Zinc CoatingsY. Hamlaoui, F. Pedraza, L. TifoutiIn this work, corrosion monitoring of Zn-based coatings is investigated through potentiodynamic and electrochemical impedance spectroscopy (EIS) methods. The first part of the study is devoted to galvanised coatings conventionally manufactured in the industry. The second part focuses on the corrosion resistance of a laboratory-made electrolytic coating. For such purpose, the corrosion behaviour is studied in NaCl media under various … …American Journal of Applied Sciences, Vol. 4, Issue 7 · 31 Jul 2007 · 7,594 accessesView PDF Cite

Research ArticleOpen accessIn the keywordsSynthesis of Graphene on Conducting Substrate by Electrochemical Deposition MethodMazin Ahmed Ali Moghazi, Sondos Al Shareef, H.Y. Wong, Mukter ZamanInvestigation to optimize the synthesis process of graphene on conducting substrate is essential for many applications. In this investigation suitable approach to extract graphene thin film on a conductive ITO substrate is optimized. This optimization is carried out by electrochemical Reduction of Graphene Oxide (RGO) solution utilizing a repetitive cyclic potential against reference electrode. To do this, Silver chloride reference … …American Journal of Applied Sciences, Vol. 14, Issue 2 · 21 Feb 2017 · 9,578 accessesView PDF Cite

Research ArticleOpen accessIn the keywordsAn Electrochemical Investigation of the Redox Properties of Murexide in Aqueous and Non-Aqueous MediaHossnia S. MohranKnowledge of solvent effects on the redox properties of Murexide (Mu) is important for understanding its role as an electron acceptor in analytical and inorganic chemistry. In the present study, an investigation of the electrochemical behavior of the compound by both Cyclic Voltammetry (CV) and Electrochemical Impedance Spectroscopy (EIS) in both aqueous and non-aqueous solutions was undertaken. It is suggested … …American Journal of Applied Sciences, Vol. 6, Issue 5 · 31 May 2009 · 7,738 accessesView PDF Cite

Research ArticleOpen accessIn the keywordsDetermination of A.C. Impedance Spectroscopic and Cyclic Voltammetric Behavior of Some Heterocarbonyl Compounds in Both Aprotic and Aqueous MediaFarouk A. RashwanThe electrochemical behavior of eosin, isatin and alloxan in aqueous KNO3 and NaClO4 solutions on the Hanging Mercury Drop Electrode [HMDE] and in aprotic DMF and CH3CN on the Pt-disk electrode at 298 K was investigated using the Cyclic Voltammetry (CV) and the Electrochemical Impedance Techniques (EIS). In the CV experiment, the electroreduction of eosin in both aqueous and non-aqueous … …American Journal of Applied Sciences, Vol. 2, Issue 7 · 31 Jul 2005 · 6,665 accessesView PDF Cite

Research ArticleOpen accessIn the abstractNanowire Mediated Effect of Interspecies Electron Transfer in Organic Solid Waste Co-FermentationJingkang Chen, Daicheng Liu et al.Low efficiency of Interspecific Electron Transfer (IET) among microorganisms constrains organic matter degradation and biogas production in organic solid waste co‑fermentation. This work investigates the underlying bottleneck and evaluates the nanowire‑mediated enhancement of IET. Surface plasmon resonance‑enhanced electrochemical impedance spectroscopy coupled with metagenomic and metatranscriptomic sequencing was applied to regulate endogenous nanowire formation in anaerobic reactors. Surface Plasmon Resonance-Enhanced Electrochemical … …American Journal of Biochemistry and Biotechnology, Vol. 22, Issue 3 · 9 Oct 2026 · 591 accessesView PDF Cite

Research ArticleOpen accessIn the abstractElectrochemical Characteristics of Some Purpurins in Aqueous and Nonaqueous SolutionsFarouk A. Rashwan, Hossnia S. Mohran, Ahmed A. El-SamahyThe Electrochemical Impedance Technique (EIS) and the Cyclic Voltammetric method (CV) were used to investigate the behavior of purpurin (P), Anthrapurpurin (AP) and Benzopurpurin (BP) in aqueous and in N, N-dimethylformamide (DMF) media. In the CV experiments, both the radical and the dianion of these substances were assumed to form of limited stability due to chemical protonation. In case of … …American Journal of Applied Sciences, Vol. 2, Issue 7 · 31 Jul 2005 · 6,743 accessesView PDF Cite