Electrocatalytic reactions on carbon fibre electrodes modified by hemine I. Electroreduction of oxygen
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One-pot fabrication of Hemin-N–C composite with enhanced electrocatalysis and application to H<inf>2</inf>O<inf>2</inf> sensing
2018, Electrochimica ActaCitation Excerpt :The value of m/n was then calculated to be close to 0.5, indicating a two electron/one proton process for both redox reaction. This can be ascribed the redox process of hemin dimer [13,34]. Combined with some reports before [35,36], the simplified mechanism can be deduced as follow.2 (Fe (Ⅲ)OH-) + 2e- + H+ ↔ H2OFe(Ⅱ)---Fe(Ⅱ)-OH-
Electrochemical oxidation of salicylic acid at ITO substrates modified with layer-by-layer films of carbon nanotubes and iron oxide nanoparticles
2017, Journal of Electroanalytical ChemistryIrreversibility of catalytic reduction of dioxygen by dissolved hemin
2014, Journal of Electroanalytical ChemistryCitation Excerpt :Especially hemin, a natural porphyrinatoiron complex, has been able to reduce catalytically dioxygen and hydrogen peroxide at carbon paste electrodes [2–4]. Hemin-modified carbon fiber electrodes can also reduce dioxygen to water and hydrogen peroxide, depending on solvents [5]. The number of electrons transferred at hemin-coated glassy carbon electrodes varies with pH; a one-step four-electron reduction at pH < 11 and two successive steps at pH > 12 [6].
Sensitive voltammetric and amperometric responses of respiratory toxins at hemin-adsorbed carbon-felt
2013, Journal of Environmental Sciences (China)Covalent hybrid of hemin and mesoporous carbon as a high performance electrocatalyst for oxygen reduction
2012, International Journal of Hydrogen EnergyCitation Excerpt :Hemin, a natural porphyrinatoiron complex, is also known to act as non-precious-metal catalyst for ORR [16–19]. For instance, Antoniadou et al. [17] reported that hemin was active to the ORR in both aqueous and methanolic solutions. Arifuku et al. [19] studied the effect of pH on the electrocatalytic reduction of oxygen on a hemin modified glassy carbon electrode; they found that oxygen was reduced via a one-step reduction through a four-electron way at pH < 11, and via two successive reductions at pH > 12.
Stability of hemin/C electrocatalyst for oxygen reduction reaction
2012, International Journal of Hydrogen EnergyCitation Excerpt :For example, hemin can be used as the electrocatalyst for reducing the air pollutants, e.g. nitric oxide, carbon dioxide. Also, hemin has been reported to be an active electrocatalyst for mediating the oxygen reduction reaction (ORR) [16,17]. Antoniadou et al. [16] reported that hemin was active to the ORR in both aqueous and methanolic solutions.