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Volumn 81, Issue 21, 2009, Pages 8797-8800

The quasicatalytic mechanism: A variation of the catalytic (EC′) mechanism

Author keywords

[No Author keywords available]

Indexed keywords

CATALYTIC EFFECTS; CATALYTIC MECHANISMS; DIFFUSION COEFFICIENTS; DIFFUSION LAYERS; ELECTROCHEMICAL SYSTEMS; HETEROGENEOUS ELECTRON TRANSFER; HOMOGENEOUS KINETICS; MARCUS THEORY; PEAK CURRENTS; POTENTIAL RANGE; SYSTEM BEHAVIORS; VOLTAMMETRIC RESPONSE;

EID: 70350633801     PISSN: 00032700     EISSN: None     Source Type: Journal    
DOI: 10.1021/ac901309v     Document Type: Article
Times cited : (11)

References (24)
  • 6
    • 70350663044 scopus 로고    scopus 로고
    • note
    • For economy and clarity of presentation, we have assumed that reactions 1 and 3 are one-electron transfers; also, we discuss only the examples where the initial species (A and P) are the oxidized redox moieties. When the reduced redox moieties are the initial species, the necessary transformations should be obvious.
  • 7
    • 0026108980 scopus 로고
    • It is sufficient for the present purposes to use the Butler-Volmer formalism rather than the considerably more complicated Marcus-based expression developed by Chidsey
    • It is sufficient for the present purposes to use the Butler-Volmer formalism rather than the considerably more complicated Marcus-based expression developed by Chidsey (Science 1991, 215, 919).
    • (1991) Science , vol.215 , pp. 919
  • 9
    • 70350677007 scopus 로고    scopus 로고
    • note
    • -1). The operative mechanism is yet to be established. A manuscript is in preparation.
  • 10
    • 0040662866 scopus 로고
    • The role of the rate constant for reaction 2 can, in principle, be determined spectrophotometrically as shown by Strojek et al. in a study of a conproportionation reaction: A + e ⇄ B; B + e ⇄ C; A + C ⇄ 2B. Here, too, the rate constant for conproportionation has no effect on the electrochemical response as long as the heterogeneous electron transfers are reversible and the diffusion coefficients for all species are identical
    • The role of the rate constant for reaction 2 can, in principle, be determined spectrophotometrically as shown by Strojek et al. (Strojek, J. W.; Kuwana, T.; Feldberg, S. W. J. Am. Chem. Soc. 1968, 90, 1353) in a study of a conproportionation reaction: A + e ⇄ B; B + e ⇄ C; A + C ⇄ 2B. Here, too, the rate constant for conproportionation has no effect on the electrochemical response as long as the heterogeneous electron transfers are reversible and the diffusion coefficients for all species are identical.
    • (1968) J. Am. Chem. Soc. , vol.90 , pp. 1353
    • Strojek, J.W.1    Kuwana, T.2    Feldberg, S.W.3
  • 11
    • 0001067891 scopus 로고
    • A theoretical basis for this was developed by Andrieux and Saveant
    • A theoretical basis for this was developed by Andrieux and Saveant, J. Electroanalytical Chem. 1970, 28, 339-348.
    • (1970) J. Electroanalytical Chem. , vol.28 , pp. 339-348
  • 12
    • 0021481173 scopus 로고
    • An analogous result for reactions 1-3 was obtained by
    • An analogous result for reactions 1-3 was obtained by Andrieux, Hapiot, and Saveant, J. Electroanalytical Chem. 1984, 172, 49-65
    • (1984) J. Electroanalytical Chem. , vol.172 , pp. 49-65
    • Andrieux, H.1    Saveant2
  • 13
    • 0005748465 scopus 로고
    • These works and references therein deal with the general problem of nonadditivity of diffusion currents effected by homogeneous kinetics and nonequal diffusion coefficients
    • Andrieux, Hapiot, and Saveant, J. Electroanalytical Chem. 1985, 186, 237-246. These works and references therein deal with the general problem of nonadditivity of diffusion currents effected by homogeneous kinetics and nonequal diffusion coefficients.
    • (1985) J. Electroanalytical Chem. , vol.186 , pp. 237-246
    • Andrieux, H.1    Saveant2
  • 22
    • 70350623256 scopus 로고    scopus 로고
    • note
    • The work of Pietron et al. discusses a classic EC′ system with the smaller diffusion coefficients associated with the mediator rather than with the substrate.


* 이 정보는 Elsevier사의 SCOPUS DB에서 KISTI가 분석하여 추출한 것입니다.