Fig. 3From: Design of Double-Shelled CuS Nanocages to Optimize Electrocatalytic Dynamic for Sensitive Detection of Ascorbic Acida–c FESEM images of 2-CuS NCs. TEM images of d–f 2-CuS NCs and (inset of d) 1-CuS NCs. g HRTEM image of 2-CuS NCs and insert is the selected area electron diffraction pattern. N2 adsorption-desorption isotherm of h 2-CuS NCs and i 1-CuS NCs. Insets are the corresponding pore size distributionsBack to article page