Mesoporous gadolinium doped ceria (CGO) powder was synthesized
as a replica of the KIT-6 silica template by a multi-step
infiltration filling both interpenetrated channels of the replica, as
described in detail elsewhere and from now on named here
CGO. In addition, mesoporous powder was fabricated by filling
one of the two interpenetrated channels of the original silica template
(from now on named CGO-D). Both mesoporous replicas were
calcined at 600 ◦C. A structural analysis and comparison between
CGO and CGO-D is presented in the Supplementary Information
and in Section 3.6. The main difference between the two powders
lies in the pore size which is 3.9 nm for CGO and 11.3 nm for
GCO-D. Both powders present very similar specific surface around
120 m2/g.