Characterization of Phosphate Species on Hydrated Anatase TiO2 Surfaces

The adsorption/interaction of KH2PO4 with solvated (100) and (101) TiO2 anatase surfaces is investigated using periodic DFT calculations in combination with GIPAW NMR calculations and experimental IR and solid state (17)O, and (31)P NMR spectroscopies. A complete and realistic model has been used to...

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Veröffentlicht in:Langmuir : the ACS journal of surfaces and colloids. - 1992. - 32(2016), 4 vom: 02. Feb., Seite 997-1008
1. Verfasser: Tielens, Frederik (VerfasserIn)
Weitere Verfasser: Gervais, Christel, Deroy, Geraldine, Jaber, Maguy, Stievano, Lorenzo, Coelho Diogo, Cristina, Lambert, Jean-François
Format: Online-Aufsatz
Sprache:English
Veröffentlicht: 2016
Zugriff auf das übergeordnete Werk:Langmuir : the ACS journal of surfaces and colloids
Schlagworte:Journal Article Research Support, Non-U.S. Gov't
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520 |a The adsorption/interaction of KH2PO4 with solvated (100) and (101) TiO2 anatase surfaces is investigated using periodic DFT calculations in combination with GIPAW NMR calculations and experimental IR and solid state (17)O, and (31)P NMR spectroscopies. A complete and realistic model has been used to simulate the solvent by individual water molecules. The most stable adsorption configurations are characterized theoretically at the atomic scale, and experimentally supported by NMR and IR spectroscopies. It is shown that H2PO4(-) chemisorbs on the (100) and (101) anatase surfaces, preferentially via a bidentate geometry. Dimer (H3P2O7(-)) and trimer (H4P3O10(-)) adsorption models are confronted with monomer adsorption models, in order to rationalize their occurrence 
650 4 |a Journal Article 
650 4 |a Research Support, Non-U.S. Gov't 
700 1 |a Gervais, Christel  |e verfasserin  |4 aut 
700 1 |a Deroy, Geraldine  |e verfasserin  |4 aut 
700 1 |a Jaber, Maguy  |e verfasserin  |4 aut 
700 1 |a Stievano, Lorenzo  |e verfasserin  |4 aut 
700 1 |a Coelho Diogo, Cristina  |e verfasserin  |4 aut 
700 1 |a Lambert, Jean-François  |e verfasserin  |4 aut 
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