1. Contribution from the Department of Materials Science and Engineering, Institute for Environmental Catalysis, Northwestern University, Evanston, Illinois 60208-3108, Department of Chemistry, Institute for Environmental Catalysis, Northwestern University, Evanston, Illinois 60208-3108, Department of Materials Science and Engineering, Northwestern University, Evanston, Illinois 60208-3108, and Department of Physics and Astronomy, Institute for Environmental Catalysis, Northwestern University, Evanston,...