[1]许倩倩,杨春.介孔TiO_2在乙腈介质中的合成及其表征[J].南京师大学报(自然科学版),2011,34(03):58-64.
　Xu Qianqian,Yang Chun.Synthesis and Characterization of Mesoporous TiO2 in Acetonitrile Medium[J].Journal of Nanjing Normal University(Natural Science Edition),2011,34(03):58-64.
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介孔TiO_2在乙腈介质中的合成及其表征()
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《南京师大学报（自然科学版）》[ISSN:1001-4616/CN:32-1239/N]

卷:
第34卷
期数:
2011年03期
页码:
58-64
栏目:
化学
出版日期:
2011-09-20

文章信息/Info

Title:
Synthesis and Characterization of Mesoporous TiO2 in Acetonitrile Medium
作者:
许倩倩; 杨春
南京师范大学化学与材料科学学院，江苏南京210046
Author(s):
Xu Qianqian; Yang Chun
School of Chemistry and Materials Science,Nanjing Normal University,Nanjing 210046,China
关键词:
乙腈; EISA; 介孔TiO2 ; 合成
Keywords:
acetonitrile; EISA; mesoporous TiO2 ; synthesis
分类号:
O643.36;O614.411
摘要:
介孔TiO 2的合成一般以乙醇为溶剂,采用溶剂蒸发诱导自组装法(EISA)进行.本文以乙腈为溶剂,以三嵌段高聚物表面活性剂EO20PO70EO20(P123)为模板剂,四氯化钛和钛酸丁酯为混合钛源,合成了介孔TiO 2材料.比较了乙醇和乙腈溶剂中所得样品的结构,发现乙腈作溶剂,样品的介孔结构与乙醇作溶剂时相似,但晶化程度较高.本文还考察了不同钛源配比和不同焙烧温度对样品孔结构和晶化程度的影响.发现TiCl 4∶Ti(OBu)4的摩尔配比=1∶1,焙烧温度为350℃时,所得样品具有均匀的近圆柱形孔道和晶化度高的锐
Abstract:
Mesoporous TiO2 was generally synthesized by using ethanol as solvent via Evaporation-Induced Self-Assembly ( EISA) method． Ethanol was replaced by acetonitrile，the mesoporous TiO2 materials were prepared by using TiCl4 and Ti( OBu) 4 as titanium precursors in the presence of triblock copolymer P123． By comparison of the syntheses in ethanol and in acetonitrile solvent，we found that the mesostructure obtained in acetonitrile is similar to that obtained in ethanol; but the crystallinity of sample is higher in the former． Effects of the different titanium source ratio and the different calcination temperature on the mesostructure and the crystallization degree of sample were also investigated． The results indicate that the molar ratio of TiCl4 /Ti( OBu) 4 = 1∶ 1 and the calcination at 350℃ are the optimal conditions for the sample synthesized in acetonitrile． The uniform and cylinder-like channels and anatase TiO2 with higher crystallinity can be obtained under such conditions．

参考文献/References:

［1］ Yu J C，Zang L Z，Yu J G． Rapid synthesis of mesoporous TiO2 with high photocatalytic activity by ultrasound-induced agglomeration ［J］． New Journal of Chemistry，2002，26( 4) : 416-420．
［2］ Dai Q，He N，Guo Y，et al． High photocatalytic activity of pure TiO2 mesoporous molecular sieves for the degradation of 2， 4，6-trichlorophenol［J］． Chem Lett，1998，27( 11) : 1 113-1 114．
［3］ 范晓星，于涛，邹志刚． 介孔TiO2 的材料合成及其在光催化领域的应用［J］． 功能材料，2006，37( 1) : 6-9．
［4］ 杨儒，李敏，张敬畅，等． 锐钛矿型纳米TiO2 粉体的精细结构及其光催化降解苯酚的活性［J］． 催化学报，2003，24 ( 8) : 629-634．
［5］ Jing L Q，Li S D，Song S，et al． Investigation on the electron transfer between anatase and rutile in nano-sized TiO2 by means of surface photovoltage technique and its effects on the photocatalytic activity［J］． Solar Energy Mater ＆ Solar Cells， 2008，92( 9) : 1 030-1 036．
［6］ Ozawa T，Iwasaki M，Tada H，et al． Low-temperature synthesis of anatase—brookite composite nanocrystals: the junction effect on photocatalytic activity［J］． Journal of Colloid and Interface Science，2005，281( 2) : 510-513．
［7］ Yang P D，Deng T，Zhao D Y，et al． Hierarchically ordered oxides［J］． Science，1998，282( 5397) : 2 244-2 246．
［8］ Yang P D，Zhao D Y，Stucky G D，et al． Generalized syntheses of large-pore mesoporous metal oxides with semicrystalline frameworks［J］． Nature，1998，396( 6707) : 152-155．
［9］ Lu Y F，Ganguli R，Zink J I，et al． Continuous formation of supported cubic and hexagonal mesoporous films by sol-gel dipcoating ［J］． Nature，1997， 389( 6649) : 363-368．
［10］ Lu Y F，Fan H Y，Brinker C J，et al． Evaporation-induced self-assembly: nanostructures made easy［J］． Adv Mater， 1999，11( 7) : 579-585．
［11］ Sung Yeun Choi，Marc Mamak，Neil Coombs，et al． Thermally stable two-dimensional hexagonal mesoporous nanocrystalline anatase，meso-nc-TiO2 : bulk and crack-free thin film morphologies［J］． Adv Funct Mater，2004，14( 4) : 335-344．
［12］ 刘月明，赵东元，吴海虹，等． 具有锐钛矿骨架结构TiO2 介孔分子筛的合成［J］． 化学学报． 2005，63( 24) : 2 241-2 244．
［13］ Zhao L L，Yu Y，Song L X，et al． Preparation of mesoporous titania film using nonionic triblock copolymer as surfactant template［J］． Appl Catal A: Gen，2004，263( 2) : 171-177．
［14］ Tian B Z，Yang H F，Liu X Y，et al． Fast preparation of highly ordered nonsiliceous mesoporous materials via mixed inorganic precursors［J］． Chem Commun，2002，2( 17) : 1 824-1 825．
［15］ Tian B Z，Liu X Y，Tu B，et al． Self-adjusted synthesis of ordered stable mesoporous minerals by acid-base pairs［J］． Nature Mater，2003，2( 3) : 159-163．
［16］ Feuston B P，Higgins J B． Model structures for MCM-41 materials: a molecular dynamics simulation［J］． J Phys Chem， 1994，98( 16) : 4 459-4 462．
［17］ Kruk M，Jaroniec M，Ryoo R，et al． Characterization of regular and plugged SBA-15 silicas by using adsorption and inverse carbon replication and explanation of the plug formation mechanism［J］． J Phys Chem B，2003， 107( 10) : 2 205-2 213．
［18］ Van Bavel E，Cool P，Vansant E F，et al． Plugged hexagonal templated silica( PHTS) : an in-depth study of the structural characteristics［J］． J Phys Chem B，2004，108( 17) : 5 263-5 268．
［19］ Hayward R C，Chmelka B F，Stucky G D，et al． General predictive syntheses of cubic，hexagonal，and lamellar silica and titania mesostructured thin films［J］． Chem Mater，2002，14( 8) : 3 284-3 294．

备注/Memo

备注/Memo:
基金项目:国家自然科学基金( 20473037) 、南京师范大学“211 工程”三期重点学科建设计划资助项目、江苏高校优势学科建设工程资助项目．通讯联系人:杨春，研究员，研究方向: 多相催化． E-mail: yangchun@ njnu． edu． Cn
更新日期/Last Update: 2011-09-15