Figure 3.

N2 adsorption/desorption isotherms of (a) CF-ZnO, (b) RF-ZnO, (c) R-ZnO, and (d) N-ZnO, respectively, and (e) pore size distributions.

N2 adsorption/desorption isotherms of (a) CF-ZnO, (b) RF-ZnO, (c) R-ZnO, and (d) N-ZnO, respectively, and (e) pore size distributions.