Issue 38, 2013
From the journal:

Physical Chemistry Chemical Physics

Oxygen reduction reaction catalyzed with titanyl phthalocyanines in nonaqueous and aqueous media†

Faruk Demir,a   Ali Erdoğmuşb  and  Atıf Koca*a  

* Corresponding authors

a Marmara University, Department of Chemical Engineering, Faculty of Engineering, Göztepe, Istanbul, Turkey
E-mail: akoca@marmara.edu.tr
Fax: +90 216 3450126
Tel: +90 216 3480292

b Department of Chemistry, Yildiz Technical University, Esenler, Istanbul, Turkey

Abstract

Electrochemical and in situ spectroelectrochemical behaviors and electrocatalytic reduction of molecular oxygen with titanyl phthalocyanines (TiPc) bearing 3,4-(methylenedioxy)-phenoxy substituents were performed in aprotic solvents. Multi electrons and metal-based and ring-based redox processes of TiPcs indicate their possible electrocatalytic activity toward many target species. Different numbers and positions of the substituents of the complexes affect the peaks’ character and assignment of the processes. The presence of O2 in the electrolyte system influences the electrochemical and spectral responses of TiPcs. Electrochemical and in situ spectroelectrochemical analysis indicates interaction of molecular oxygen with TiPcs and these interaction mechanisms depend on both the substituent environments of the complexes and the electrolyte system. Langmuir–Blodgett films of the complexes also catalyze molecular oxygen in aqueous media, which is a desired property for their practical application.

Graphical abstract: Oxygen reduction reaction catalyzed with titanyl phthalocyanines in nonaqueous and aqueous media

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Article information

DOI
https://doi.org/10.1039/C3CP51719E
Article type
Paper
Submitted
25 Apr 2013
Accepted
18 Jul 2013
First published
19 Jul 2013

Phys. Chem. Chem. Phys., 2013,15, 15926-15934

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Oxygen reduction reaction catalyzed with titanyl phthalocyanines in nonaqueous and aqueous media

F. Demir, A. Erdoğmuş and A. Koca, Phys. Chem. Chem. Phys., 2013, 15, 15926 DOI: 10.1039/C3CP51719E

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