Some consequences of the fluorination of brucite-like layers in layered double hydroxides: Adsorption

Hydrotalcite-like compounds were synthesised by co-precipitation method. The originality of the work is the replacement of structural OH− by F−. Fluoride anions were incorporated as a part of the brucite like layers not as compensating anions. The resulting adsorptive properties of fluorinated materials are very different than those observed for the fluorine-free sample. The polarity and polarisability parameters were calculated by using dyes and xenon as molecular probes. The hydrogen bond accepting character and acido-basicity are the main properties enhanced because of the fluorination of hydrotalcite-like compounds, helping to diversify adsorption sites for chromophores or water.