Oxygen reduction on vacuum-deposited and absorbed transition-metal phthalocyanine films

Putten, van; Elzing, A; Visscher, Whm Wil; Barendrecht, E Embrecht

doi:10.1016/0022-0728(86)80121-8

Cited by 51 publications

(24 citation statements)

References 14 publications

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“…10, we can imagine that the prewave completely vanishes when the basal plane instead of ordinary pyrolytic graphite is used. Perhaps, there is also an influence of the surface roughness on the probability of the occurrence of dimer sites, as has been suggested in a previous publication [26].…”

Section: Curves 1 and 2 Inmentioning

confidence: 59%

“…The previously published results obtained for FePc, irreversibly adsorbed on graphite, from a pyridine solution [26], are repeated in Fig. 13.…”

Section: Fepc Compared With Fetspcmentioning

confidence: 60%

“…The points in this figure are the obtained current maxima (see also Fig 10). These maxima are characteristic for both FeTSPc [7] and FePc [26]. The decrease in current in Fig.…”

Section: Oxygen Reduction On Fetspcmentioning

confidence: 85%

“…The possibility of the existence of two different sites (monomeric and dimeric) has been suggested by us earlier and was based on analogies [26]. A survey of the literature shows that direct reduction of oxygen to water without the formation of hydrogen peroxide as an intermediate occurs on noble metals such as platinum and silver [27], electrodes prepared by UPD of some metals [28] and cofacial dicobalt porphyrins [29].…”

Section: Curves 1 and 2 Inmentioning

confidence: 99%

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The cathodic reduction of oxygen at metal tetrasulfonato-phthalocyanines: influence of adsorption conditions on electrocatalysis

Elzing

Putten

Visscher

et al. 1987

Journal of Electroanalytical Chemistry and Interfacial Electroc

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Section: Curves 1 and 2 Inmentioning

confidence: 59%

“…The previously published results obtained for FePc, irreversibly adsorbed on graphite, from a pyridine solution [26], are repeated in Fig. 13.…”

Section: Fepc Compared With Fetspcmentioning

confidence: 60%

“…The points in this figure are the obtained current maxima (see also Fig 10). These maxima are characteristic for both FeTSPc [7] and FePc [26]. The decrease in current in Fig.…”

Section: Oxygen Reduction On Fetspcmentioning

confidence: 85%

Section: Curves 1 and 2 Inmentioning

confidence: 99%

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The cathodic reduction of oxygen at metal tetrasulfonato-phthalocyanines: influence of adsorption conditions on electrocatalysis

Elzing

Putten

Visscher

et al. 1987

Journal of Electroanalytical Chemistry and Interfacial Electroc

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“…A good example of such an approach is the work of Zagal-Moya [6], who investigated both the redox potentials and 0, reduction of the water-soluble cobalt and iron tetrasulphonated phthalocyanines (TSPc), adsorbed on pyrolytic graphite, as a function of PH. From previous work in our laboratory [7,8], it has become clear that irreversibly adsorbed monolayers of FePc, CoPc and CoTAA can be prepared by dipping a pyrolytic graphite (Cp) disc into pyridine solutions of the #~espon~ng chelates. Another result was that the half-wave potential, El,*, for the 0, reduction at CoTAA in 0.5 llri H,SO, was 400 mV more .…”

Section: Oximmentioning

confidence: 99%

Redox potential and electrocatalysis of O2 reduction on transition metal chelates

Putten

Elzing

Visscher

et al. 1987

Journal of Electroanalytical Chemistry and Interfacial Electroc

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The redox potentials of iron phthalocyanine (FePc), cobalt phthalocyanine (CoPc) and cobalt tetraaxaammlene (CoTAA), irreversibly adsorbed on pyrolytic graphite, were investigated as a function of the pH by cyclic voltammetry. The reduction of oxygen was studied under the same conditions with the rotating disc electrode technique. At high pH, where the reduction to H,Or on the cobalt-containing chelates is more reversible, the value of the redox potential is less important. At low pH, where this reduction is irreversible, there is a clear correlation between the redox potential of the central metal ion and the Oa reduction behaviour. In acid media, a 470 mV more positive redox potential of CoTAA compared to that of CoPc, resulted in a half-wave potential, Elfl, for the Or reduction being 400 mV more positive than the El12 of CoPc.

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Reaktivitätsdeskriptoren für die Aktivität von molekularen MN4‐Katalysatoren zur Sauerstoffreduktion

Zagal

Koper

2016

Angewandte Chemie

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Zwischen allgemein bekannten Reaktivitätsdeskriptoren für die Aktivität von Metallelektroden bezüglich der Sauerstoffreduktion (ORR, oxygen reduction reaction) und der Reaktivität von molekularen Katalysatoren, im Speziellen auf Elektrodenoberflächen haftenden makrocyclischen MN4‐Metallkomplexen, lassen sich eindeutige Ähnlichkeiten herstellen. Wir zeigen auf, dass ein Zusammenhang zwischen dem MIII/MII‐Redoxpotential von MN4‐Chelaten und ihren M‐O2‐Bindungsenergien besteht. Insbesondere die Bindungsenergie von O2 (und anderen O‐Spezies) folgen dem MIII‐OH/MII‐Übergang von MnN4‐ und FeN4‐Chelaten. Die Vulkankurve für die Sauerstoffreduktion an MN4‐Katalysatoren ähnelt der Vulkankurve von Metallkatalysatoren: Katalysatoren auf dem Abschnitt mit schwacher Bindung (vor allem CoN4‐Chelate) ergeben H2O2 als Hauptprodukt, wobei der Beginn der Sauerstoffreduktion pH‐unabhängig auf der NHE‐Skala ist (und damit pH‐abhängig auf der RHE‐Skala); Katalysatoren auf dem Abschnitt mit starker Bindung ergeben H2O als Produkt und zeigen die erwartete pH‐Abhängigkeit auf der NHE‐Skala. Die hier behandelten Deskriptoren treffen auch auf thermisch behandelte pyrolysierte MN4‐Katalysatoren zu.

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Oxygen reduction on vacuum-deposited and absorbed transition-metal phthalocyanine films

Cited by 51 publications

References 14 publications

The cathodic reduction of oxygen at metal tetrasulfonato-phthalocyanines: influence of adsorption conditions on electrocatalysis

The cathodic reduction of oxygen at metal tetrasulfonato-phthalocyanines: influence of adsorption conditions on electrocatalysis

Redox potential and electrocatalysis of O2 reduction on transition metal chelates

Reaktivitätsdeskriptoren für die Aktivität von molekularen MN4‐Katalysatoren zur Sauerstoffreduktion

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