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Effects of Template Contents on the Physicochemical Sorption Properties of Zr‐Incorporated Mesoporous Titania Materials
Author(s) -
Zheng JinYu,
Qiu KunYuan,
Wei Yen
Publication year - 2002
Publication title -
chinese journal of chemistry
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.28
H-Index - 41
eISSN - 1614-7065
pISSN - 1001-604X
DOI - 10.1002/cjoc.20020201006
Subject(s) - mesoporous material , chemistry , chemical engineering , anatase , mesophase , sorption , zirconium , transmission electron microscopy , microporous material , porosity , titanium , template , adsorption , nanotechnology , inorganic chemistry , materials science , organic chemistry , photocatalysis , catalysis , phase (matter) , engineering
Zr‐Incorporated mesoporous titania materials were prepared via nonsurfactant templated sol‐gel process of zirconium (IV) butoxide (ZBT) and titanium (IV) butoxide (TOT) in the presence of urea molecules as template or pore forming agent. The effects of template contents on the pore parameters of the materials synthesized with fixed Zr incorporation contents were investigated by nitrogen adsorption‐desorption measurements, powder X‐ray diffraction (XRD) study and transmission electron microscopy (TEM). The changes of template contents play significant roles on the pore parameters at low incorporation content of Zr. The pore diameters display a dear increase tendency with the increase of template contents. When high Zr incorporation content is used, the template contents have less effect on the pore diameters that almost keep unchanged with the increase of template contents. All the materials possess type IV isotherms with H 2 hysteresis loops suggesting the formation of mesophase. The materials with low Zr incorporation content have anatase structures; however, it can not be found in the materials with high Zr incorporation content. TEM images show that some accumulated inter‐particulate pores and well‐distributed worm‐like pores are present in the Zr‐incorporated materials.