Supplementary Information for "Ordered nanoporous arrays of carbon supporting high dispersions of platinum nanoparticles"
Nature, V412, 140

 

Figure 5 Pore size distribution for carbon nanopipe determined by Barrett-Joyner-Halenda analysis of the N2 adsorption isotherm (calculated as described in ref. 15). Inset: N2 adsorption-desorption isotherms

Figure 6 EXAFS data for Pt/carbon nanopipe. a, k3-weighted EXAFS oscillation [k3c (k)] for 2 wt% Pt/carbon nanopipe in wave vector (k) space. b, Fourier transform of the k3c (k) to distance (r)-space. Solid lines: experimental. Dashed lines: best curve fits obtained with Pt-Pt coordination number of 5.4, bond distance of 0.255 nm and Debye-Waller factor of 106 pm2, with the assumption of face-centered-cubic packing and spherical cluster geometry.

Figure 7 Scanning electron microscopic image of carbon nanopipe sample in the form of freestanding thin film. The image was taken by a Philips 535M apparatus operating at 20 kV.