Highly ordered supermicroporous silica
Wang, RL; Han, SH; Hou, WG; Sun, LX; Zhao, J; Wang, YS; shuhhan@sdu.edu.cn
2007
发表期刊JOURNAL OF PHYSICAL CHEMISTRY C
ISSN1932-7447
卷号111期号:29页码:10955-10958
摘要Highly ordered supermicroporous silica (space group 2D-p6mm) was prepared using gemini surfactant [C8H17-N+(CH3)(2)-(CH2)(2)-N+(CH3)(2)-C8H17]center dot 2Br(-) (denoted C8-2-8) with a short spacer group (s = 2) as the structure-directing agent and sodium silicate as the precursor. The samples were characterized by small-angle X-ray diffraction, transmission electron microscopy, and N-2 adsorption-desorption. The results showed that the pore structure of the resulting silica belongs to the two-dimensional hexagonal structure (space group 2D-p6mm) with a pore size of ca. 1.40 nm (in the supermicroporous range). The high-quality supermicroporous silica was formed at a low molar ratio of C8-2-8 to sodium silicate (0.08:1), indicating that the ability of self-assembly of C8-2-8 is stronger than that of corresponding monovalent surfactants (single chain, single head group). For supermicroporous materials, the methods for calculating surface area and pore size are critically compared. The surface area was found to be about 1000 m(2)/g by the alpha(s) plot method. The pore size obtained with the HK model was in the range of 1.36-1.62 nm.
部门归属Shandong Univ, Minist Educ, Key Lab Colloid & Interface Chem, Jinan 250100, Peoples R China; Chinese Acad Sci, S China Sea Inst Oceanol, Guangzhou 510301, Peoples R China
学科领域Chemistry, Physical ; Nanoscience & Nanotechnology ; Materials Science, Multidisciplinary
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收录类别sci
资助项目LMB
WOS记录号WOS:000248121600030
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被引频次:19[WOS]   [WOS记录]     [WOS相关记录]
文献类型期刊论文
条目标识符http://ir.scsio.ac.cn/handle/344004/4920
专题中科院海洋生物资源可持续利用重点实验室
通讯作者shuhhan@sdu.edu.cn
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Wang, RL,Han, SH,Hou, WG,et al. Highly ordered supermicroporous silica[J]. JOURNAL OF PHYSICAL CHEMISTRY C,2007,111(29):10955-10958.
APA Wang, RL.,Han, SH.,Hou, WG.,Sun, LX.,Zhao, J.,...&shuhhan@sdu.edu.cn.(2007).Highly ordered supermicroporous silica.JOURNAL OF PHYSICAL CHEMISTRY C,111(29),10955-10958.
MLA Wang, RL,et al."Highly ordered supermicroporous silica".JOURNAL OF PHYSICAL CHEMISTRY C 111.29(2007):10955-10958.
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