ABSTRACT Hydroxyapatite (HAp) is widely studied owing to its high adsorption capacity for various substances. In this study, HAp containing iron ions (FeAp) was synthesised by a simulated body fluid… Click to show full abstract
ABSTRACT Hydroxyapatite (HAp) is widely studied owing to its high adsorption capacity for various substances. In this study, HAp containing iron ions (FeAp) was synthesised by a simulated body fluid method, and the solid-solution state of iron in FeAp crystals was investigated to evaluate the photo-Fenton reaction. The crystalline phase and lattice parameters of the sample were determined through X-ray diffraction analysis. The lattice parameters revealed lattice contraction along the a-axis direction for FeAp, indicating the incorporation of Fe ions. The results of methylene blue decolourisation experiments and potential measurements with a scanning probe microscope before and after the addition of H2O2 suggested that FeAp undergoes a photo-Fenton reaction. Thus, it was confirmed that iron in the crystals contributed to the photo-Fenton reaction.
               
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