Chemistry Department Colloquium

"Surface Modification to Control Electrocatalysis"

Presented by Christopher Chidsey, Stanford University, Dept. of Chemistry

Friday, October 7, 2011, 10:00 am — Room 300 - Chemistry Bldg. 555

The modification of electrode surfaces for immobilization of catalysts affects electrocatalytic efficiency, selectivity and stability. I will describe two recent examples: (i) the immobilization of metal complexes onto gold and carbon electrodes to promote the selective reduction of dioxygen to water and (ii) the protection of reactive electrodes by titanium dioxide during water oxidation. I will explore the benefits and limits of methods of surface modification with an eye to their application to other electrocatalytic systems.

Electrocatalytic O2 Reduction by Covalently Immobilized Mononuclear Copper(I) Complexes: Evidence for a Binuclear Cu2O2 Intermediate," Charles C. L. McCrory, Anando Devadoss, Xavier Ottenwaelder, Randall D. Lowe, T. Daniel P. Stack, and Christopher E. D. Chidsey, J. Am. Chem. Soc. 133, 3696 (2011).

Atomic layer-deposited tunnel oxide stabilizes silicon photoanodes for water oxidation ," Yi Wei Chen, Jonathan D. Prange, Simon Duhnen, Yohan Park, Marika Gunji, Christopher E. D. Chidsey, Paul C. McIntyre, Nature Materials 10, 539 (2011).

Hosted by: Alex Harris

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