Tunable Enzyme-Assisted Mineralization of Apatitic Calcium Phosphate by Homogeneous Catalysis.

The substitution of fluoride in the lattice is characterized by a contraction of the a lattice parameter, as electronegative fluoride are expected to interact with surrounding calcium ions and occupy a position at their center, slightly offset from the position of native hydroxyl ions [ 25 , 38 , 39 , 40 ], while the evolution of the c length does not follow a clear trend.

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The unit cell volume showed a positive trend with [S] 0 overall, with the increasing a parameter resulting in an expansion of the unit cell ( Figure 4 C).

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