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Laboratoire d'Electrochimie Moleculaire, LEM, Paris

UMR CNRS - Université Paris Diderot - Paris France

Master Frontiers in Chemistry | UFR de Chimie - Université Paris Diderot - Paris 7 CNRS - Institut de chimie Université de Paris Master Chimie Sorbonne Paris Cité UFR de Chimie - Université Paris Diderot - Paris 7 CNRS - Institut de chimie
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Université Paris Diderot
Université de Paris CNRS, Centre National de la Recherche Scientifique

Le LEM - Publications: Abstracts

Publication 803

ChemElectroChem,, 3 (9), 1422-1428, 2016


Electro-assisted deposition of binary self-assembled 1,2-dithiolane monolayers on gold with predictable composition


Dany Capitao, Rihab Sahli, Noureddine Raouafi, Benoit Limoges, Claire Fave, and Bernd Schöllhorn

Laboratoire d’Electrochimie Moléculaire, UMR 7591 CNRS Université Paris Diderot, Sorbonne Paris Cité,, 15 rue Jean-Antoine de Baïf, 75205 Paris Cedex 13, France
Laboratoire de Chimie Analytique et d’Electrochimie, Département de Chimie, Faculté des Sciences de Tunis, Université El-Manar, 2092 Tunis El-Manar, Tunisia

The design of highly efficient and selective photocatalytic systems for CO2 reduction that are based on nonexpensive materials is a great challenge for chemists. The photocatalytic reduction of CO2 by [Co(qpy)(OH2)2]2+ (1) (qpy = 2,2':6',2":6",2"'-quaterpyridine) and [Fe(qpy)(OH2)2]2+ (2) have been investigated. With Ru(bpy)32+ as the photosensitizer and 1,3-dimethyl-2-phenyl-2,3-dihydro-1H-benzo[d]imidazole as the sacrificial reductant in CH3CN/triethanolamine solution under visible-light excitation (blue light-emitting diode), a turnover number (TON) for CO as high as 2660 with 98% selectivity can be achieved for the cobalt catalyst. In the case of the iron catalyst, the TON was >3000 with up to 95% selectivity. More significantly, when Ru(bpy)32+ was replaced by the organic dye sensitizer purpurin, TONs of 790 and 1365 were achieved in N,N-dimethylformamide for the cobalt and iron catalysts, respectively.

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