Preparation of N-Doped Composite Shell Encapsulated Iron Nanoparticles and Their Magnetic, Adsorptive, and Photocatalytic Properties

Figure 3

(a) HRTEM image of product B at low magnification. (b) Several nanoparticles with core-shell structure; (c) and (d) high magnification of the upper and lower shells of nanoparticle A in (b). (e) Histogram of size distribution of the nanoparticles.

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