Figure 4From: Tunable synthesis of SiO2-encapsulated zero-valent iron nanoparticles for degradation of organic dyesN 2 adsorption-desorption isotherms of as-synthesized nanocomposites. (a) S-0.5, (b) S-1, (c) S-2, (d) S-4, and (e) S-8.Back to article page