Figure 2

(a) SEM image and (b) BET plot for the honeycomb Au-ZnO heterostructures, and (c) SEM image and (d) BET plot for the porous cylindrical Au-ZnO heterostructures.
(a) SEM image and (b) BET plot for the honeycomb Au-ZnO heterostructures, and (c) SEM image and (d) BET plot for the porous cylindrical Au-ZnO heterostructures.