Fig. 16.6 (a) Schematic illustration of the formation process of NiCoP/C nanoboxes: (I) reaction of
ZIF-67 nanocubes with Ni(NO 3 ) 2 to form ZIF-67@LDH nanoboxes and (II) phosphidation of
ZIF-67@LDH nanoboxes to obtain NiCoP/C nanoboxes. (b, c) FESEM and (d) TEM images of
ZIF-67@LDH nanoboxes. (e and f) FESEM images, (g) TEM image, and (h) HAADF-STEM
image of the NiCoP/C nanoboxes. Elemental mapping images of Ni (i), Co (j), and P (k) of an
individual nanobox. (Reproduced from Ref. [49] by permission of John Wiley & Sons Ltd)
16.2 Preparation Methods
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