Unique adsorption behavior of H2 and CO over group 8–10 metals encapsulated inside silica nanotubes and nanocapsules

Various silica nanotubes and nanocapsules have been prepared successfully, possessing unique silica walls of selective H2 permeation and encapsulate group 8–10 metal particles inside and exhibit a marked stabilization effect of H2 and CO over the metals in the network of silica wall and inside nanoscale cavities.