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Title: | Hybrid porous titania phosphonate networks with different bridging functionalities: Synthesis, characterization, and evaluation as efficient solvent separation materials | Authors: | PAWLAK, Bram MARCHAL, Wouter Ramesha, Bharadwaj Mysore JOOS, Bjorn CALVI, Lavinia D'HAEN, Jan RUTTENS, Bart HARDY, An Meynen, Vera ADRIAENSENS, Peter CARLEER, Robert |
Issue Date: | 2022 | Publisher: | ELSEVIER | Source: | Microporous and mesoporous materials (Print), 341 (Art N° 112080) | Abstract: | Hybrid titania phosphonate materials can demonstrate a high added value as tailored sorption materials. They combine high chemical stability with great structural versatility, given the wide diversity of functional groups that can be incorporated. Hereto, a fundamental understanding of the synthesis strategies influencing the material performance is required. Therefore three porous TiO2 phosphonate hybrid structures with different functional groups (octyl, propyl, and phenyl) were evaluated in a solid-phase extraction application aimed towards solvent separation. The synthesis was performed by mixing bridged diphosphonic acids (DPAs) with Ti (OBu)4 in a water-ethanol mixture at 30 degrees C, followed by a hydrothermal post-treatment at 120 degrees C. The materials were characterized by ICP-AES, 31P solid-state CP/MAS NMR, Raman and FTIR spectroscopy, X-ray diffraction, N2-sorption, and transmission electron microscopy. It is shown that the diphosphonic acids are quantitatively incorporated in the hybrid structures, leading to nanosized particles with a complex but uniquely functionalized surface. A study of the pore structure as a function of the incorporated DPA amount showed materials with a maximum BET surface area of 379 m2/g. The alkyl functionalized hybrid titania phosphonates demonstrated excellent and tunable sorption behavior. | Notes: | Pawlak, B (corresponding author), UHasselt, Inst Mat Res IMO IMOMEC, Analyt & Circular Chem ACC, Agoralaan, B-3590 Diepenbeek, Belgium. bram.pawlak@uhasselt.be |
Keywords: | Hybrid porous titania organophosphonates;Hydrothermal synthesis;31 P solid-state NMR;SPE for Solvent separation | Document URI: | http://hdl.handle.net/1942/37859 | ISSN: | 1387-1811 | e-ISSN: | 1873-3093 | DOI: | 10.1016/j.micromeso.2022.112080 | ISI #: | 000827717900002 | Rights: | 2022 Elsevier Inc. All rights reserved. | Category: | A1 | Type: | Journal Contribution | Validations: | ecoom 2023 |
Appears in Collections: | Research publications |
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Hybrid porous titania phosphonate networks with different bridging functionalities_ Synthesis, characterization, and evaluation as efficient solvent separation materials.pdf Restricted Access | Published version | 4.98 MB | Adobe PDF | View/Open Request a copy |
Hybrid porous.pdf Until 2024-08-18 | Peer-reviewed author version | 1.86 MB | Adobe PDF | View/Open Request a copy |
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