Photocatalytic reduction of carbon dioxide to formic acid at porphyrin and phthalocyanine adsorbed Nafion membranes

Premkumar, J. ; Ramaraj, R. (1997) Photocatalytic reduction of carbon dioxide to formic acid at porphyrin and phthalocyanine adsorbed Nafion membranes Journal of Photochemistry and Photobiology A: Chemistry, 110 (1). pp. 53-58. ISSN 1010-6030

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Official URL: http://linkinghub.elsevier.com/retrieve/pii/S10106...

Related URL: http://dx.doi.org/10.1016/S1010-6030(97)00156-1

Abstract

The metal porphyrin (MP) and phthalocyanine (MPC) adsorbed Nafion membranes are prepared (Nf/MP and Nf/MPC) and used as photocatalysts for the photoreduction of carbon dioxide (CO2). The formation of formic acid (HCOOH) is observed when the Nf/MP and Nf/MPC membranes are dipped in CO2 saturated solution and irradiated in the presence of a sacrificial electron donor such as triethanolamine (TEA). The turnover number of the photocatalysts are very high in the presence of a sacrificial electron donor. The Nf/MP and Nf/MPC membranes behave as a p-type semiconductor. The irradiation of these membranes leads to the formation of holes (MP-« or MPC-«) and HCOOH by electron transfer. The TEA acts as sacrificial electron donor and scavenges the holes.

Item Type:Article
Source:Copyright of this article belongs to Elsevier Science.
Keywords:Photocatalysis; Carbon Dioxide Reduction; Nation; Porphyrin; Phthalocyanine
ID Code:39745
Deposited On:16 May 2011 05:30
Last Modified:16 May 2011 05:30

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