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Effects of Template Contents on the Physicochemical Sorption Properties of Zr—Incorporated Mesoporous Titania Materials
引用本文:郑金玉,丘坤元,危岩.Effects of Template Contents on the Physicochemical Sorption Properties of Zr—Incorporated Mesoporous Titania Materials[J].中国化学,2002,20(10):951-957.
作者姓名:郑金玉  丘坤元  危岩
作者单位:[1]DepartmentofChemistry,DrexelUniversity,Philadelphia,PA19104,USA [2]DepartmentofPolymerscienceandEngineering,CollegeofChemistryandMolecularEngineering,PekingUnivers,Beijing100871,china
基金项目:ProjectsupportedbytheNationalNaturalScienceFoundationofChina (No .2 98740 0 2 ) ,theOutstandingYoungScientistAwardfromtheNationalNaturalScienceFoundationofChina (No .2 982 5 5 0 4) ,andtheGraduateSchoolofPekingUniversity .
摘    要:Zr-Incorporated mesoporous titania materials were prepared via nonsurfactant templated sol-gel process of zirconium(IV) butoxide(ZBT) and titanium(IV) butoxide(TBT) in the presence of urea molecules as template or pore forming agent.The effcets of template contents on the pore parameters of the materials synthesized with fixed Zr incorporation contents were investigated by mitrogen adsorption-desrption 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 incorporsation content of Zr.The pore diameters display a clear 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 H2 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 welldistributed worm-like pores are present in the Zr-incorporated materials.

关 键 词:中孔材料  二氧化钛    掺杂  溶胶-凝胶  结构  X射线衍射

Effects of Template Contents on the Physicochemical Sorption Properties of Zr-Incorporated Mesoporous Titania Materials
ZHENG,Jin-Yu a QIU,Kun-Yuan WEI,Yan a.Effects of Template Contents on the Physicochemical Sorption Properties of Zr-Incorporated Mesoporous Titania Materials[J].Chinese Journal of Chemistry,2002,20(10):951-957.
Authors:ZHENG  Jin-Yu a QIU  Kun-Yuan WEI  Yan a
Institution:ZHENG,Jin-Yu a QIU,Kun-Yuan WEI,Yan aDepartment of Polymer Science and Engineering,College of Chemistry and Molecular Engineering,Peking University,Beijing 100871,China b Department of Chemistry,Drexel University,Philadelphia,PA 1
Abstract:Zr-Incorporated mesoporous titania materials were prepared via nonsurfactant templated sol-gel process of zirconium (IV) butoxide (ZBT) and titanium (IV) butoxide (TBT) 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 clear 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.
Keywords:Zr-incorporated mesoporous titania  nonsurfactant template  urea  sol-gel
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