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Some consequences of the fluorination of brucite-like layers in layered double hydroxides: Adsorption
Abstract 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.
Graphical abstract Decrease of the CO2 adsorption as a consequence of the fluorination of brucite-like layers in layered double hydroxides. Display Omitted
Highlights Fluorination of the layered double hydroxides. Electronegative species to modify the acid-base properties of LDHs. Hydrogen Bonding character and polarisability drive the adsorption capacity of LDHs.
Some consequences of the fluorination of brucite-like layers in layered double hydroxides: Adsorption
Abstract 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.
Graphical abstract Decrease of the CO2 adsorption as a consequence of the fluorination of brucite-like layers in layered double hydroxides. Display Omitted
Highlights Fluorination of the layered double hydroxides. Electronegative species to modify the acid-base properties of LDHs. Hydrogen Bonding character and polarisability drive the adsorption capacity of LDHs.
Some consequences of the fluorination of brucite-like layers in layered double hydroxides: Adsorption
Lima, Enrique (author) / Pfeiffer, Heriberto (author) / Flores, Jorge (author)
Applied Clay Science ; 88-89 ; 26-32
2013-12-12
7 pages
Article (Journal)
Electronic Resource
English
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