期刊
EUROPEAN JOURNAL OF INORGANIC CHEMISTRY
卷 -, 期 19, 页码 2941-2948出版社
WILEY-V C H VERLAG GMBH
DOI: 10.1002/ejic.201000204
关键词
Organic-inorganic hybrid composites; Titanium; Phosphonates; Adsorption; Mesoporous materials
资金
- National Natural Science Foundation of China [20973096, 20673060]
- National Basic Research Program of China [2009CB623502]
- Specialized Research Fund for the Doctoral Program of Higher Education [20070055014]
- Natural Science Foundation of Tianjin [08JCZDJC21500]
- Supporting Program for New Century Excellent Talents [NCET-06-0215]
- Nankai University
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 EO30PO34 and (3-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 500-1000 nm, observed in all the titanium phosphonates synthesized with or without organic additives, a secondary small-scaled, spherical macroporous structure with a diameter of 50-100 nm was obtained by the addition of cyclodextrin. These macroporous structures are proposed to be templated by the aggregation of cyclodextrin. The structural characterization confirms the integrity of organic groups inside the framework. Large adsorption capacities for heavy metal ions and CO2 are demonstrated in these hybrid materials, which makes them promising adsorbents for practical applications.
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