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Hydrothermally Stable Thioether‐Bridged Mesoporous Materials with Void Defects in the Pore Walls
Author(s) -
Liu J.,
Yang J.,
Yang Q.,
Wang G.,
Li Y.
Publication year - 2005
Publication title -
advanced functional materials
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 6.069
H-Index - 322
eISSN - 1616-3028
pISSN - 1616-301X
DOI - 10.1002/adfm.200500122
Subject(s) - thioether , mesoporous material , materials science , chemical engineering , hydrothermal circulation , bromide , mesoporous organosilica , transmission electron microscopy , sorption , adsorption , nanotechnology , inorganic chemistry , organic chemistry , mesoporous silica , polymer chemistry , chemistry , engineering , catalysis
Hydrothermally stable thioether‐bridged mesoporous materials have been synthesized by one‐step co‐condensation of 1,4‐bis(triethoxysily)propane tetrasulfide (TESPTS) with tetramethoxysilane (TMOS) using cetyltrimethylammonimum bromide (CTAB) as the surfactant in basic conditions. The ordered mesoporous materials can be formed with a wide range of thioether concentrations in the mesoporous framework, as is seen by X‐ray diffraction (XRD) characterization. The results of N 2 sorption and transmission electron microscopy (TEM) reveal that the materials synthesized with TESPTS/TMOS molar ratios in the range 1:8–1:3 have extensive structural defect holes in the nanochannels. All materials exhibit enhanced hydrothermal stability, which is in proportion to the concentration of thioether bridging in the mesoporous framework. The thioether‐functionalized mesoporous materials are efficient adsorbents for removing Hg 2+ and phenol from waste water. The Hg 2+ ‐adsorption capacity of the material can be as high as 1500 mg g –1 .