A novel reactivity descriptor for MN4 molecular catalysts for the oxidation of 2-mercaptoethanol and of thioglycolic acid: The Electrochemical Hardness

IF 4.7 3区工程技术 Q2 ELECTROCHEMISTRY

Electrochemistry Communications Pub Date : 2025-03-08 DOI:10.1016/j.elecom.2025.107910

Laura Scarpetta-Pizo , Ricardo Venegas , Ingrid Ponce , José H. Zagal

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Abstract

This manuscript describes a novel reactivity descriptor for Fe phthalocyanines molecular catalysts confined on the surface of OPG electrodes. The descriptor ΔE°’cat. is the gap in potential between the E°Fe(III)/(II) and E°Fe(II)/(I) redox processes for each FeN4 catalyst. This descriptor, labeled as the electrochemical hardness ΔE°’_cat. Was examined using FeN4 macrocyclic complexes for the electrooxidation of 2-mercaptoethanol (2-ME) and thioglycolic acid TGA. Our findings reveal that the reactivity as log log(j/Γ)E, plotted versus E°Fe(III)/(II) or E°Fe(II)/(I) give two linear correlations. The activity log(j/Γ)_E in both cases decreases with the redox potential of each FeN4 catalyst. In contrast log(j/Γ)_E, or log (TOF)_E, increase with ΔE°’_cat.. The FeS binding energy ΔE°’_cat. Correlates linearly with ΔE°’_cat. so the softer the system the greater the binding energy and the lower the catalytic activity.

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来源期刊

Electrochemistry Communications 工程技术-电化学

CiteScore

8.50

自引率

3.70%

发文量

160

审稿时长

1.2 months

期刊介绍： Electrochemistry Communications is an open access journal providing fast dissemination of short communications, full communications and mini reviews covering the whole field of electrochemistry which merit urgent publication. Short communications are limited to a maximum of 20,000 characters (including spaces) while full communications and mini reviews are limited to 25,000 characters (including spaces). Supplementary information is permitted for full communications and mini reviews but not for short communications. We aim to be the fastest journal in electrochemistry for these types of papers.