fig2

Figure 2. (A) FESEM image, (B) TEM image, (C) SAED pattern, (D) HRTEM image, (E) EDX mapping images, and (F) N2 adsorption-desorption isotherm (inset: BJH pore-size distribution curve from desorption branch) of porous Nb4W7O31 microspheres.
Figure 2. (A) FESEM image, (B) TEM image, (C) SAED pattern, (D) HRTEM image, (E) EDX mapping images, and (F) N2 adsorption-desorption isotherm (inset: BJH pore-size distribution curve from desorption branch) of porous Nb4W7O31 microspheres.
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