A functionalised nickel cyclam catalyst for CO2 reduction: Electrocatalysis, semiconductor surface immobilisation and light-driven electron transfer

Gaia Neri; James J. Walsh; Calum Wilson; Anna Reynal; Jason Y.C. Lim; Xiaoe Li; Andrew J.P. White; Nicholas J. Long; James R. Durrant; Alexander J. Cowan

doi:10.1039/c4cp04871g

A functionalised nickel cyclam catalyst for CO₂ reduction: Electrocatalysis, semiconductor surface immobilisation and light-driven electron transfer

Gaia Neri, James J. Walsh, Calum Wilson, Anna Reynal, Jason Y.C. Lim, Xiaoe Li, Andrew J.P. White, Nicholas J. Long, James R. Durrant, Alexander J. Cowan

Research output: Contribution to journal › Article › peer-review

34 Citations (Scopus)

Abstract

The immobilisation of electrocatalysts for CO₂ reduction onto light harvesting semiconductors is proposed to be an important step towards developing more efficient CO₂ reduction photoelectrodes. Here, we report a low cost nickel cyclam complex covalently anchored to a metal oxide surface. Using transient spectroscopy we validate the role of surface immobilisation on enhancing the rate of photoelectron transfer. Furthermore [Ni(1,4,8,11-tetraazacyclo-tetradecane-6-carboxylic acid)]²⁺ (2) is shown to be a very active electrocatalyst in solution.

Original language	English
Pages (from-to)	1562-1566
Number of pages	5
Journal	Physical Chemistry Chemical Physics
Volume	17
Issue number	3
DOIs	https://doi.org/10.1039/c4cp04871g
Publication status	Published - 21 Jan 2015

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Neri, G., Walsh, J. J., Wilson, C., Reynal, A., Lim, J. Y. C., Li, X., White, A. J. P., Long, N. J., Durrant, J. R., & Cowan, A. J. (2015). A functionalised nickel cyclam catalyst for CO₂ reduction: Electrocatalysis, semiconductor surface immobilisation and light-driven electron transfer. Physical Chemistry Chemical Physics, 17(3), 1562-1566. https://doi.org/10.1039/c4cp04871g

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abstract = "The immobilisation of electrocatalysts for CO2 reduction onto light harvesting semiconductors is proposed to be an important step towards developing more efficient CO2 reduction photoelectrodes. Here, we report a low cost nickel cyclam complex covalently anchored to a metal oxide surface. Using transient spectroscopy we validate the role of surface immobilisation on enhancing the rate of photoelectron transfer. Furthermore [Ni(1,4,8,11-tetraazacyclo-tetradecane-6-carboxylic acid)]2+ (2) is shown to be a very active electrocatalyst in solution.",

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AU - Wilson, Calum

AU - Reynal, Anna

AU - Lim, Jason Y.C.

AU - Li, Xiaoe

AU - White, Andrew J.P.

AU - Long, Nicholas J.

AU - Durrant, James R.

AU - Cowan, Alexander J.

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AB - The immobilisation of electrocatalysts for CO2 reduction onto light harvesting semiconductors is proposed to be an important step towards developing more efficient CO2 reduction photoelectrodes. Here, we report a low cost nickel cyclam complex covalently anchored to a metal oxide surface. Using transient spectroscopy we validate the role of surface immobilisation on enhancing the rate of photoelectron transfer. Furthermore [Ni(1,4,8,11-tetraazacyclo-tetradecane-6-carboxylic acid)]2+ (2) is shown to be a very active electrocatalyst in solution.

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A functionalised nickel cyclam catalyst for CO₂ reduction: Electrocatalysis, semiconductor surface immobilisation and light-driven electron transfer

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