Iron(ii) tetrakis(diaquaplatinum)octacarboxyphthalocyanine supported on multi-walled carbon nanotube platform: an efficient functional material for enhancing electron transfer kinetics and electrocatalytic oxidation of formic acid

A novel platinum-based macrocycle, iron( ii ) tetrakis(diaquaplatinum)octacarboxyphthalocyanine (PtFeOCPc), was synthesised and characterised. The heterogeneous electron transfer and electrocatalytic properties of this functional material towards the oxidation of formic acid have been explored on a...

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Bibliographic Details
Published in:Journal of materials chemistry 2010-01, Vol.2 (47), p.175-1715
Main Authors: Mamuru, Solomon A, Ozoemena, Kenneth I, Fukuda, Takamitsu, Kobayashi, Nagao
Format: Article
Language:English
Subjects:
Carbon monoxide
Electrodes
Electron transfer
Formic acid
Graphite
Multi wall carbon nanotubes
Oxidation
Platforms
Tolerances
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Summary:A novel platinum-based macrocycle, iron( ii ) tetrakis(diaquaplatinum)octacarboxyphthalocyanine (PtFeOCPc), was synthesised and characterised. The heterogeneous electron transfer and electrocatalytic properties of this functional material towards the oxidation of formic acid have been explored on a graphite electrode platform pre-modified with or without acid-functionalised multi-walled carbon nanotubes (MWCNTs). We prove that PtFeOCPc supported on a MWCNT platform (MWCNT-PtFeOCPc) exhibits enhanced electrochemical response in terms of (i) electron transfer towards outer-sphere redox probe, (ii) catalytic rate constant, and (iii) tolerance towards CO poisoning during formic acid oxidation. The results clearly suggest that the MWCNT-PtFeOCPc is a promising platform for potential application as an electrocatalyst for direct formic acid fuel cell. Novel Pt-based iron( ii ) phthalocyanine complex supported on MWCNT-based electrode exhibits enhanced kinetics and electrocatalysis towards the oxidation of formic acid.
ISSN:0959-9428
1364-5501
DOI:10.1039/c0jm02210a