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NICKEL INCORPORATION IN Fe(II, III) HYDROXYSULFATE GREEN RUST: EFFECT ON CRYSTAL LATTICE SPACING AND OXIDATION PRODUCTS

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Figure 1. X ray diffraction patterns of the initial Ni(II)-GR2 products obtained in anoxic conditions as a function of the Fe(II)/Ni(II) ratio of the starting solution.
Table 2. Interplanar distances  d 001  ( c ), size of the unit cell along the a axis ( a ), volume of the unit cell ( V ) and thickness ( D c ) of crystallites along the c hexagonal axis as determined by the Scherrer formula in the Ni(II)-GR2 samples, as a
Figure 3. Reduction of the unit cell edge length  a  of the Ni(II)-GR2 samples as a function of Ni(II) content
Figure 4. X ray diffraction patterns of the final products from the aerial oxidation of the dry Ni(II)-GR2 samples as a function of the Fe(II)/

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