Fig. 4From: Synthesis, stability, and emission analysis of magnetite nanoparticle-based biofuelsSEM analyses of various size nano particles A spherical shape and average size about 12nm at 200oC [99], B spherical shape and average size about 53nm at 250oC [99], B spherical shape and size less than 100 nm [100], and D spherical shape and size varies from 24 to 65 nm [101]Back to article page