Fig. 6

a Nitrogen adsorption–desorption isotherms, b the BET surface areas, and c BJH of the non-calcined. d Nitrogen adsorption–desorption isotherms, e the BET surface areas, and f BJH of the calcined nanoflowers at 400 °C
a Nitrogen adsorption–desorption isotherms, b the BET surface areas, and c BJH of the non-calcined. d Nitrogen adsorption–desorption isotherms, e the BET surface areas, and f BJH of the calcined nanoflowers at 400 °C