Microemulsion liquid crystal templates for highly ordered three-dimensional mesoporous silica monoliths with controllable mesopore structures

被引:87
|
作者
El-Safty, SA
Hanaoka, T
机构
[1] Natl Inst AIST, Tohoku Ctr, Lab Membrane Chem, Miyagino Ku, Sendai, Miyagi 9838551, Japan
[2] Tanta Univ, Fac Sci, Dept Chem, Tanta, Egypt
关键词
D O I
10.1021/cm034282o
中图分类号
O64 [物理化学(理论化学)、化学物理学];
学科分类号
070304 ; 081704 ;
摘要
Nanostructure composite silica monoliths (HOM-n) with three-dimensional (3-D) structures and controllable pore size were fabricated by using microemulsion lyotropic liquid crystal mesophase as templates under acidic conditions. By addition of alkanes with different molecular size (C-6-C-19 alkyl chains) into the primary lyotropic liquid crystal mesophase of Brij 56 (C16EO10), quaternary microemulsion liquid crystal phases formed and the mesophase topology of the surfactant was significantly enhanced with 3-D structures. Hydrocarbon molecular size and the degree of solubilization significantly influenced the amphiphilic phase behavior and the mesopore morphological structure. The phase transitions between the different cubic symmetries could be controlled by using a different solubilizing agent in the microemulsion phases of Brij 56 amphiphile. Thereby, the phase transition of primary liquid crystal mesophases in the microemulsion systems were used to fabricate well-defined highly ordered mesoporous silica monoliths HOM-n, including hexagonal P6mm (HOM-2), 3-D hexagonal P6(3)/mmc (HOM-3), primitive-centered cubic Pn3m (HOM-7), Pm3n (HOM-9), and Pm3m (HOM-4) symmetries and body-centered cubic Im3m (HOM-1), bicontinuous cubic Ia3d (HOM-5), and face-centered cubic Fm3m (HOM-10) materials. In these systematic trends, the transitions were primarily governed by the interfacial curvature surface of the amphiphile aggregates. The interactions between alkanes and aggregates substantially influenced the interfacial surface curvatures of micelles, thereby affecting the preferable mesophase structures. However, the primitive cubic (Pm3n) and face-centered cubic (Fm3m) monoliths were the most stable phases among all mesophases, indicating that surfaces with high interfacial curvature were obtained by the addition of long hydrocarbon chain lengths (C-10-C-19 range). The addition of short lengths, hexane (C-6) and heptane (C-7) to the aggregate did not significantly affect the shape geometry of the phases, with the exception of the microemulsion lamellar phases formed in the 2-D hexagonal silica monoliths (HOM-2). Our results show that domains with highly curved interfaces were favored in these microemulsion systems. A tailored pore size was obtained within the transition between the 3-D phases with all mesophases. The extent of transition between the phases with enlarged pore dimensions was further studied by varying the amount of solubilizing agent in the microemulsion composition. Large 3-D monoliths of millimeter-sized particles had a wide range of uniform pore size between 30 and 80 Angstrom, high surface area up to 900 m(2)/g, and thick walls of about 100 Angstrom. Such properties will allow a wide range of mesoscopic applications.
引用
收藏
页码:384 / 400
页数:17
相关论文
共 50 条
  • [21] Synthesis of Mesoporous Silica with a Three-Dimensional Hexagonal Ordered Structure Using Cationic and Amphoteric Mixed Surfactants
    Zhang Jian-Bo
    Yang Yu-Xiang
    Zheng Jiu-Li
    Yuan Hong-Ming
    Cao Lei
    Chen Cheng
    CHINESE JOURNAL OF INORGANIC CHEMISTRY, 2011, 27 (09) : 1817 - 1829
  • [22] Solvent Evaporation Induced Aggregating Assembly Approach to Three-Dimensional Ordered Mesoporous Silica with Ultralarge Accessible Mesopores
    Wei, Jing
    Wang, Hai
    Deng, Yonghui
    Sun, Zhenkun
    Shi, Lin
    Tu, Bo
    Luqman, Mohammad
    Zhao, Dongyuan
    JOURNAL OF THE AMERICAN CHEMICAL SOCIETY, 2011, 133 (50) : 20369 - 20377
  • [23] Streptavidin-Functionalized Three-Dimensional Ordered Nanoporous Silica Film for Highly Efficient Chemiluminescent Immunosensing
    Yang, Zhanjun
    Xie, Zhuoying
    Liu, Hong
    Yan, Feng
    Ju, Huangxian
    ADVANCED FUNCTIONAL MATERIALS, 2008, 18 (24) : 3991 - 3998
  • [24] Highly efficient adsorption of radioiodine by a three-dimensional ordered macroporous bismuth-silica composite aerogel
    Chang, Sen
    Wang, Kunjun
    Gao, Linfeng
    Liu, Jingguo
    Wang, Longjiang
    Li, Yongguo
    Song, Xuemei
    Yu, Jie
    Luan, Xin'gang
    CHEMICAL ENGINEERING SCIENCE, 2022, 260
  • [25] Proton Transport in Mesoporous Silica SBA-16 Thin Films with Three-Dimensional Cubic Structures
    Hwang, Junho
    Daiguji, Hirofumi
    LANGMUIR, 2013, 29 (07) : 2406 - 2411
  • [26] PROTON TRANSPORT IN MESOPOROUS SILICA SBA-16 THIN FILMS WITH THREE-DIMENSIONAL CUBIC STRUCTURES
    Hwang, Junho
    Daiguji, Hirofumi
    PROCEEDINGS OF THE 11TH INTERNATIONAL CONFERENCE ON NANOCHANNELS, MICROCHANNELS, AND MINICHANNELS, 2013, 2013,
  • [27] Designing three-dimensional ordered structures from directed self-assembly of block copolymer films in topographical templates
    Cao, Xuguang
    Zhang, Liangshun
    Gu, Jiabin
    Wang, Liquan
    Lin, Jiaping
    POLYMER, 2015, 72 : 10 - 20
  • [28] Mesotunnels on the silica wall of ordered SBA-15 to generate three-dimensional large-pore mesoporous networks
    Fan, J
    Yu, CZ
    Wang, LM
    Tu, B
    Zhao, DY
    Sakamoto, Y
    Terasaki, O
    JOURNAL OF THE AMERICAN CHEMICAL SOCIETY, 2001, 123 (48) : 12113 - 12114
  • [29] Two- and three-dimensional ordered structures of hollow silver spheres prepared by colloidal crystal templating
    Chen, Z
    Zhan, P
    Wang, ZL
    Zhang, JH
    Zhang, WY
    Ming, NB
    Chan, CT
    Sheng, P
    ADVANCED MATERIALS, 2004, 16 (05) : 417 - +
  • [30] Highly ordered three-dimensional large-pore periodic mesoporous organosilica with Im3m symmetry
    Guo, WP
    Kim, I
    Ha, CS
    CHEMICAL COMMUNICATIONS, 2003, (21) : 2692 - 2693