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Pore size control of mesoporous silicas from mixtures of sodium silicate and TEOS
Liu, Jian; Yang, Qihua; Zhao, X. S.; Zhang, Lei; Yang QH(杨启华); Yang QH(杨启华)
关键词Mesoporous Materials Large Pore Size Sodium Silicate Buffer Solution
刊名MICROPOROUS AND MESOPOROUS MATERIALS
2007-11-01
DOI10.1016/j.micromeso.2007.02.045
106期:1-3页:62-67
收录类别SCI
文章类型Article
部门归属5
项目归属506
产权排名1;1
WOS标题词Science & Technology ; Physical Sciences ; Technology
类目[WOS]Chemistry, Applied ; Chemistry, Physical ; Nanoscience & Nanotechnology ; Materials Science, Multidisciplinary
研究领域[WOS]Chemistry ; Science & Technology - Other Topics ; Materials Science
关键词[WOS]MESOCELLULAR FOAM ; TEMPERATURE ; COPOLYMER ; TRIBLOCK ; SBA-15 ; MECHANISM ; EXPANDERS ; DESIGN
英文摘要Mesoporous silicas with large and tunable pore size (10-16nm) were successfully synthesized from mixtures of sodium silicate (Na2SiO3) and tetraethoxysilane (TEOS) in acetic acid/sodium acetate buffer solution (pH 4.4, HAc-NaAc) using poly(ethylene oxide)-poly(propylene oxide)-poly(ethylene oxide) (EO20PO70EO20, denoted as P123) as template, in which TEOS acts both as a swelling agent and a silica source. Highly ordered 2-D hexagonal and mesostructured cellular foam structure with large pore size could be obtained using sodium silicate and TEOS as silica source, respectively. By adjusting the initial molar ratio of TEOS/(Na2SiO3+TEOS) from 0 to 0.5, the pore sizes of the final ordered 2-D hexagonal mesoporous silicas could be precisely tuned from 10 to 15 run. The large pore size (15 nm) of the material was attributed to the slow hydrolysis and polymerization rate of TEOS in the buffer solution. The presence of ethanol in the synthesis system also has strong effects on the mesostructure and pore size of the materials. (c) 2007 Elsevier Inc. All rights reserved.
语种英语
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WOS记录号WOS:000251203400009
引用统计
被引频次:52[WOS]   [WOS记录]     [WOS相关记录]
文献类型期刊论文
条目标识符http://cas-ir.dicp.ac.cn/handle/321008/99185
专题中国科学院大连化学物理研究所
通讯作者Yang QH(杨启华); Yang QH(杨启华)
作者单位1.Chinese Acad Sci, Dalian Inst Chem Phys, State Key Lab Catalysis, Dalian 116023, Peoples R China
2.Chinese Acad Sci, Grad Sch, Beijing 100039, Peoples R China
3.Natl Univ Singapore, Dept Chem & Biomol Engn, Singapore 119620, Singapore
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GB/T 7714
Liu, Jian,Yang, Qihua,Zhao, X. S.,et al. Pore size control of mesoporous silicas from mixtures of sodium silicate and TEOS[J]. MICROPOROUS AND MESOPOROUS MATERIALS,2007,106(1-3):62-67.
APA Liu, Jian,Yang, Qihua,Zhao, X. S.,Zhang, Lei,杨启华,&杨启华.(2007).Pore size control of mesoporous silicas from mixtures of sodium silicate and TEOS.MICROPOROUS AND MESOPOROUS MATERIALS,106(1-3),62-67.
MLA Liu, Jian,et al."Pore size control of mesoporous silicas from mixtures of sodium silicate and TEOS".MICROPOROUS AND MESOPOROUS MATERIALS 106.1-3(2007):62-67.
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