DICP OpenIR
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)
KeywordMesoporous Materials Large Pore Size Sodium Silicate Buffer Solution
Source PublicationMICROPOROUS AND MESOPOROUS MATERIALS
2007-11-01
DOI10.1016/j.micromeso.2007.02.045
Volume106Issue:1-3Pages:62-67
Indexed BySCI
SubtypeArticle
Department5
Funding Project506
Contribution Rank1;1
WOS HeadingsScience & Technology ; Physical Sciences ; Technology
WOS SubjectChemistry, Applied ; Chemistry, Physical ; Nanoscience & Nanotechnology ; Materials Science, Multidisciplinary
WOS Research AreaChemistry ; Science & Technology - Other Topics ; Materials Science
WOS KeywordMESOCELLULAR FOAM ; TEMPERATURE ; COPOLYMER ; TRIBLOCK ; SBA-15 ; MECHANISM ; EXPANDERS ; DESIGN
AbstractMesoporous 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.
Language英语
URL查看原文
WOS IDWOS:000251203400009
Citation statistics
Cited Times:55[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://cas-ir.dicp.ac.cn/handle/321008/99185
Collection中国科学院大连化学物理研究所
Corresponding AuthorYang QH(杨启华); Yang QH(杨启华)
Affiliation1.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
Recommended Citation
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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