Fig. 3: Surface porosity and gas uptake.

(a) N2 adsorption-desorption isotherms and (b) pore size distribution plots of hollow TiO2, Pd-HPP, and Pd-HPP-TiO2. Comparisons in CO2 and O2 uptake of (c) Pd-HPP-TiO2 and (d) Pd/TiO2 at 273 K.
(a) N2 adsorption-desorption isotherms and (b) pore size distribution plots of hollow TiO2, Pd-HPP, and Pd-HPP-TiO2. Comparisons in CO2 and O2 uptake of (c) Pd-HPP-TiO2 and (d) Pd/TiO2 at 273 K.