Organic‐Additive‐Assisted Synthesis of Hierarchically Meso‐/Macroporous Titanium Phosphonates

Abstract

Organic-inorganic hybrid materials of meso-/macroporous titanium triphosphonate materials were synthesized by using amino tri(methylene phosphonic acid) as the coupling molecule. The preparation was accomplished by a hydrothermal process in the presence or absence of small amounts of the diblock copolymer EO 30 PO 34 and β-cyclodextrin as the organic additives. The organic-additive-assisted preparation efficiently aided the enlargement of the surface areas and pore volumes of the resultant porous titanium triphosphonates and helped improve the wormhole-like mesoporosity. In addition to the large macrochannels, with a size of 500-

Modification and Potential Applications of Organic–Inorganic Non-Siliceous Hybrid Materials

“…Among a number of CO 2 capture solids including porous carbons [4,5], amine-modified mesoporous silicas [6], and carbon-CaO nanocomposites [7], exhibiting certain advantages such as high surface area, large pore volume, uniform pore width, low cost, and relatively high stability is promising for CO 2 capture over a wide range of operating conditions. In recent years, much attention has been focused on mesoporous non-siliceous hybrids for CO 2 capture due to ultrahigh surface area, adjustable surface chemistry, and relatively low cost [8][9][10]. The CO 2 uptake of the cubic mesoporous titanium phosphonates was approximately 1.0 mmol g −1 at 35 °C [11], which was much higher than some pure silica adsorbents and comparable with some amino-modified mesoporous silica with similar surface areas [12].…”

Application of zirconium phosphonate—a novel hybrid material as an ion exchanger

“…A sharp medium band at ~1,625 cm −1 is attributed to aquo H-O-H bending [27]. The broad band at ~1,035 cm −1 is attributed to Zr-O-P framework vibrations [18,20]. The band at ~1,438 cm −1 is due to overlapped C -H bending of -CH 2 groups, P -C stretching vibrations and presence of tertiary amine [20].…”

“…High surface area, porous titanium phosphonate materials for multiphase adsorption of metal ions [15,16] and with large ion exchange capacity [17] have been synthesized using 1-hydoxyethylidene-1,1-diphosphonic acid. A porous titanium phosphonate with large adsorption capacity for heavy metal ions using amino tris(methylenephosphonic acid) has been synthesized by a hydrothermal process [18]. Titania phosphonate porous hybrid materials using claw type amino phosphonic acid ethylenediamine tetrakis(methylenephosphonic acid) [19] and diethylenetriamine pentakis(methylenephosphonic acid) [20] have been synthesized and used for heavy metal ion adsorption.…”

Sol–gel processing of phosphonate-based organic–inorganic hybrid materials

“…13),52),62) Small amounts of organic additives (EO 30 PO 34 copolymer or cyclodextrin) have been found useful to improve the texture of the hybrid materials. 48) Several groups have investigated the templated synthesis of phosphonate-based hybrid materials, using cationic or non-ionic templates. Kimura 37)39) and El Haskouri and coworkers 36), 40) prepared ordered mesoporous Al alkylene bis-phosphonates (compounds 3 in Scheme 2, with n = 1, 2 or 3) using cationic or non-ionic surfactants.…”