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Work performed on beamline X18B Carbon MWNT supported Pt catalysts; X. Wang, N. Li, L. Pfefferle, G. Haller Yale University, Department of Chemical Engineering. X. Wang, N. Li, J.A. Webb, L.D. Pfefferle and G.L. Haller, Effect of surface oxygen containing groups on the catalytic activity o multi-walled carbon nanotube supported Pt catalyst in press, Applied Catalysis B: Environmental, 2010. 2-5nm Pt particles outside MWNT (left) And inside MWNT (right) 11550 11555 11560 11565 11570 11575 11580 11585 11590 0.0 0.2 0.4 0.6 0.8 1.0 1.2 1.4 11560 11561 11562 11563 11564 11565 0.4 0.6 0.8 1.0 N o rm alized (E ) E n ergy (eV) N orm alized (E ) E n e rg y (e V ) P t o u tside P t insid e P t re f •Carbon Multiwalled nanotubes (MWNT) allow stabilization of nm-sized Pt or Co particles for catalytic applications. •Binding energy changes for Pt particles inside (blue) and outside (red) the MWNT. Pt metal foil reference in black (see figure below). •This allows tuning of catalytic reactivity and selectivity (e.g. Wang et al. 2010). X18 B
