In:
ChemCatChem, Wiley, Vol. 10, No. 8 ( 2018-04-24), p. 1793-1797
Abstract:
We report on a self‐assembled system comprising a molecular copper‐porphyrin photoelectrocatalyst, 5‐(4‐carboxy‐phenyl)‐10,15,20‐triphenylporphyrinatocopper(II) (CuTPP‐COOH), covalently bound to self‐organized, anodic titania nanotube arrays (TiO 2 NTs) for photoelectrochemical reduction of oxygen. Visible light irradiation of the porphyrin‐covered TiO 2 NTs under cathodic polarization up to −0.3 V vs. Normal hydrogen electrode (NHE) photocatalytically produces H 2 O 2 in pH neutral electrolyte, at room temperature and without need of sacrificial electron donors. The formation of H 2 O 2 upon irradiation is proven and quantified by direct colorimetric detection using 4‐nitrophenyl boronic acid ( p ‐NPBA) as a reactant. This simple approach for the attachment of a small molecular catalyst to TiO 2 NTs may ultimately allow for the preparation of a low‐cost H 2 O 2 evolving cathode for efficient photoelectrochemical energy storage under ambient conditions.
Type of Medium:
Online Resource
ISSN:
1867-3880
,
1867-3899
DOI:
10.1002/cctc.201702055
Language:
English
Publisher:
Wiley
Publication Date:
2018
detail.hit.zdb_id:
2485108-5
detail.hit.zdb_id:
2501161-3
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