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The mechanism of electroanalytical function of CoO(OH) in the oxalic acid electrochemical determination and its mathematical representation
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نویسنده
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tkach v.v. ,de oliveira s.c. ,anaissi f.j. ,ojani r. ,páramo-garcía u. ,yelenich o. ,yagodynets´ p.i.
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منبع
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analytical and bioanalytical electrochemistry - 2016 - دوره : 8 - شماره : 1 - صفحه:1 -11
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چکیده
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The mechanism for the electroanalytical function of the cobalt oxy-hydroxycompound in the electrochemical oxidation of oxalic acid was suggested. the mathematical model,describing this process,has been developed and analyzed by means of steady-state stability theory and bifurcation analysis. the behavior of the system was compared with the behavior of analogous systems. the steady-state stability requirements and oscillatory and monotonic instability conditions have been obtained. these instabilities may be caused by surface and electrochemical factor. the oscillation frequency and amplitude are ph-dependent,and the first parameter grows with ph. the ph-range of electroanalytical sensing efficiency was also derived and it is corresponding to moderate alkaline solutions. © 2016,center of excellence in electrochemistry,univ. of tehran. all rights reserved.
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کلیدواژه
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Bifurcation analysis; Cobalt oxide-hydroxide; Electrocatalytic oxidation; Mechanistic analysis; Oscillatory behavior; Stable steady-state
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آدرس
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chernivtsi national university,kotsyubyns’ky str.,2,chernivtsi,ukraine,universidade federal de mato grosso do sul,av. sen. felinto. müller,1555,c/p. 549,campo grande, Brazil, universidade federal de mato grosso do sul,av. sen. felinto. müller,1555,c/p. 549,campo grande, Brazil, universidade estadual do centro-oeste,departamento de química,setor de ciências exatas e da terra,laboratório de materiais e compostos inorgânicos,rua simeão varela de sá,03,guarapuava, Brazil, university of mazandaran,3 rd km. air force road, ایران, división de estudios de posgrado e investigación instituto tecnológico de ciudad madero,col. los mangos,calle juventino rosas y jesús urueta,cd. madero, Mexico, chernivtsi national university,kotsyubyns’ky str.,2, Ukraine, chernivtsi national university,kotsyubyns’ky str.,2, Ukraine
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Authors
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