In this study, we unveiled titanium-based tetrapyrazinoporphyrazines as a valuable alternative to noble metals in the oxygen reduction reaction (ORR). By simply modifying the synthetic conditions, we were able to tune the ORR selectivity while showing that the introduction of substituents on the macrocycle periphery is detrimental to the ability of the complex to reduce molecular oxygen. A complete electrochemical characterization in different conditions is reported together with rotating ring-disk electrode measurements, which assessed the possibility of selectively switching from 2- to a 4-electron reduction product changing the titanium precursor amounts during the complex synthesis.

Electrocatalytic oxygen reduction reaction promoted by titanium-based tetrapyrazinoporphyrazines

Sordello F.
First
;
Azzi E.;Pellegrino F.;Renzi P.
Last
2023-01-01

Abstract

In this study, we unveiled titanium-based tetrapyrazinoporphyrazines as a valuable alternative to noble metals in the oxygen reduction reaction (ORR). By simply modifying the synthetic conditions, we were able to tune the ORR selectivity while showing that the introduction of substituents on the macrocycle periphery is detrimental to the ability of the complex to reduce molecular oxygen. A complete electrochemical characterization in different conditions is reported together with rotating ring-disk electrode measurements, which assessed the possibility of selectively switching from 2- to a 4-electron reduction product changing the titanium precursor amounts during the complex synthesis.
2023
1
9
https://onlinelibrary-wiley-com.bibliopass.unito.it/doi/full/10.1002/aoc.7116
cyclic voltammetry; macrocycles; oxygen reduction reaction; tetrapyrazinoporphyrazines; titanium
Sordello F.; Prantsidou-Georgiadou P.-N.; Azzi E.; Tschauder Y.; Formenti D.; Pellegrino F.; Renzi P.
File in questo prodotto:
File Dimensione Formato  
Applied Organom Chemis - 2023 - Sordello - Electrocatalytic oxygen reduction reaction promoted by titanium‐based.pdf

Accesso aperto

Tipo di file: PDF EDITORIALE
Dimensione 2.62 MB
Formato Adobe PDF
2.62 MB Adobe PDF Visualizza/Apri

I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.

Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/2318/1906790
Citazioni
  • ???jsp.display-item.citation.pmc??? ND
  • Scopus 1
  • ???jsp.display-item.citation.isi??? 1
social impact