Electrocatalytic Behavior of Tetrasulfonated Metal Phthalocyanines in the Reduction of Carbon Dioxide

Abstract

In the electroreduction of carbon dioxide, catalytic activities of the tetrasulfonated metal phthalocyanines(MeTSP) homogeneously dissolved in the Clark–Lubs buffer solutions were investigated by the measurements of current- and capacitance-potential curves. It was found that CoTSP and NiTSP were active but not CuTSP and FeTSP.

Electrochemical and Photoelectrochemical Reduction of Carbon Dioxide

“…0.3 V more negative than the thermodynamic C021 CO redox potential. Oxalate and formate were also detected in the solution, as was previously reported, 102,126 but in only trace amounts, and the major product was gaseous CO. The tumover numbers of the catalyst exceeded 100 s-t, and the dinegative state of Co-Pc was again suggested to be the active form.…”

“…Hiratsuka et al 102 used water-soluble tetrasulfonated Co and Ni phthalocyanines (M-TSP) as homogeneous catalysts for CO2 reduction to formic acid at an amalgamated platinum electrode. The current-potential and capacitance-potential curves showed that the reduction potential of CO2 was reduced by ca.…”

Photochemical generation of carbon monoxide and hydrogen by reduction of carbon dioxide and water under visible light irradiation

“…This article must therefore be hereby marked "advertisement" in accordance with 18 U. S. C. §1734 solely to indicate this fact. On the other hand, metal complexes in general, and cobalt complexes in particular, are able to bind CO2 (24)(25)(26)(27)(28)(29)(30)(31)(32) and to act as electrocatalysts for its reduction (33)(34)(35)(36), for instance to CO by the overall reaction 4 (36).…”

Metal–Nitrogen–Carbon Electrocatalysts for CO2 Reduction towards Syngas Generation

“…A promising option appears to be the metal–nitrogen–carbon (M‐N‐C) electrocatalysts. Although they were first investigated in the 1970s as porphyrins and phthalocyanines, the interest in carbon‐based compounds for CO 2 RR only recently grew. Throughout the last years, pyrolyzed carbonaceous materials doped with nitrogen (i.e., N‐C electrocatalysts) or doped with nitrogen and 3d transition metals (i.e., M‐N‐C electrocatalysts) were widely investigated for the ORR and CO 2 RR …”

“…Thus, one should investigate electrocatalysts based on abundant,i nexpensive elements that generate 50 %C O/H 2 at low overpotentials without leadingt ot he formation of other carbon-basedp roducts.A promising option appears to be the metal-nitrogen-carbon (M-N-C)e lectrocatalysts. Although they were first investigated in the 1970s as porphyrins and phthalocyanines, [36,37] the interest in carbon-based compounds for CO 2 RR only recently grew. Throughout the last years, pyrolyzed carbonaceous materials doped with nitrogen (i.e.,N -C electrocatalysts)o rd oped with nitrogen and 3d transition metals (i.e., M-N-Ce lectrocatalysts) were widely investigatedf or the ORR [38][39][40][41] and CO 2 RR.…”