In Fig. 1b, irregularly sized surfaces are covered with fragmentary texture, while the fragments disappear, and they are intertwined with filamentous and acicular surfaces after ammonium adsorption in Fig. 1c
In Fig. 1b, irregularly sized surfaces are covered with fragmentary texture, while the fragments disappear, and they are intertwined with filamentous and acicular surfaces after ammonium adsorption in Fig. 1c