Biomimetic Synthesis of Hydroxyapatite in Presence of Imidazole-4,5-dicarboxylic Acid Grafted Chitosan for Removing Chromium(VI)

Figure 3

FESEM images of HAP particles obtained by using IDACS as an organic matrix with different molar ratios of chitosan to imidazole-4,5-dicarboxylic acid. (a) 3 : 1; (b) 2 : 1; (c) 1 : 1; (d) 1 : 2; (e) 1 : 3.

(a)

(b)

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(d)

(e)