Kinetic Study of the Electrochemical Oxidation of Methylene Blue with Pt Electrode | Zendy

Moukhtar A. Hassan | Zendy; M. M. El Jamal | Zendy

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Kinetic Study of the Electrochemical Oxidation of Methylene Blue with Pt Electrode

Author(s) -

Moukhtar A. Hassan,

M. M. El Jamal

Publication year - 2012

Publication title -

portugaliae electrochimica acta

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.252

H-Index - 27

eISSN - 1647-1571

pISSN - 0872-1904

DOI - 10.4152/pea.201205351

Subject(s) - methylene blue , electrochemistry , electrode , kinetic energy , chemistry , methylene , inorganic chemistry , materials science , organic chemistry , catalysis , physics , photocatalysis , quantum mechanics

Kinetic study of the indirect oxidation of methylene blue on Pt electrode in presence of several strong electrolytes is undertaken. Different operating conditions that affected the treatment process were studied in order to find the best conditions. The order with respect to methylene blue is zero order in presence of chloride, but it is second order in presence of bromide. The oxidation rate was affected by current density, halide concentration (KCl, KBr), nature of supporting electrolyte and initial pH. However, the initial dye concentration and temperature did not show a significant effect. The oxidation of methylene blue in presence of iodide, fluoride and sulfate is absent, but it is important in presence of chloride and bromide. The product of the indirect oxidation is the chloronated (bromonated) methylene violet bernthsen.

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