10
The role of curvature in silica mesoporous crystals by Keiichi Miyasaka, Alfonso Garcia Bennett, Lu Han, Yu Han, Changhong Xiao, Nobuhisa Fujita, Toen Castle, Yasuhiro Sakamoto, Shunai Che, and Osamu Terasaki Interface Focus Volume 2(5):634-644 October 6, 2012 ©2012 by The Royal Society

The role of curvature in silica mesoporous crystals by Keiichi Miyasaka, Alfonso Garcia Bennett, Lu Han, Yu Han, Changhong Xiao, Nobuhisa Fujita, Toen

Embed Size (px)

Citation preview

Page 1: The role of curvature in silica mesoporous crystals by Keiichi Miyasaka, Alfonso Garcia Bennett, Lu Han, Yu Han, Changhong Xiao, Nobuhisa Fujita, Toen

The role of curvature in silica mesoporous crystals

by Keiichi Miyasaka, Alfonso Garcia Bennett, Lu Han, Yu Han, Changhong Xiao, Nobuhisa Fujita, Toen Castle, Yasuhiro Sakamoto, Shunai Che, and Osamu

Terasaki

Interface FocusVolume 2(5):634-644

October 6, 2012

©2012 by The Royal Society

Page 2: The role of curvature in silica mesoporous crystals by Keiichi Miyasaka, Alfonso Garcia Bennett, Lu Han, Yu Han, Changhong Xiao, Nobuhisa Fujita, Toen

A coloured representation of a reconstructed electrostatic potential map for the typical cage-type SMC SBA-1.

Keiichi Miyasaka et al. Interface Focus 2012;2:634-644

©2012 by The Royal Society

Page 3: The role of curvature in silica mesoporous crystals by Keiichi Miyasaka, Alfonso Garcia Bennett, Lu Han, Yu Han, Changhong Xiao, Nobuhisa Fujita, Toen

(a) Plot of the Helfrich energy density versus the potential level c.

Keiichi Miyasaka et al. Interface Focus 2012;2:634-644

©2012 by The Royal Society

Page 4: The role of curvature in silica mesoporous crystals by Keiichi Miyasaka, Alfonso Garcia Bennett, Lu Han, Yu Han, Changhong Xiao, Nobuhisa Fujita, Toen

Colour-coded distribution for ΔH and K on the determined ISs represented within a cubic unit cell: (a) as-syn-MCM-48, and (b) cal-MCM-48.

Keiichi Miyasaka et al. Interface Focus 2012;2:634-644

©2012 by The Royal Society

Page 5: The role of curvature in silica mesoporous crystals by Keiichi Miyasaka, Alfonso Garcia Bennett, Lu Han, Yu Han, Changhong Xiao, Nobuhisa Fujita, Toen

Colour-coded rendering for K distribution on respective ISs of cage-type SMCs.

Keiichi Miyasaka et al. Interface Focus 2012;2:634-644

©2012 by The Royal Society

Page 6: The role of curvature in silica mesoporous crystals by Keiichi Miyasaka, Alfonso Garcia Bennett, Lu Han, Yu Han, Changhong Xiao, Nobuhisa Fujita, Toen

Typical plot of conductance versus time for the system N-lauroyl-glutamic acid C12GlutA/H2O/APES/TEOS at RT. Initially, the surfactant and distilled water are mixed until no

changes in the conductance are observed.

Keiichi Miyasaka et al. Interface Focus 2012;2:634-644

©2012 by The Royal Society

Page 7: The role of curvature in silica mesoporous crystals by Keiichi Miyasaka, Alfonso Garcia Bennett, Lu Han, Yu Han, Changhong Xiao, Nobuhisa Fujita, Toen

(b) SEM images of trapezoidal icositetrahedron particles, observed in mesoporous material synthesis using the N-lauroyl-alanine anionic surfactant, using P123 as a dispersant.

Keiichi Miyasaka et al. Interface Focus 2012;2:634-644

©2012 by The Royal Society

Page 8: The role of curvature in silica mesoporous crystals by Keiichi Miyasaka, Alfonso Garcia Bennett, Lu Han, Yu Han, Changhong Xiao, Nobuhisa Fujita, Toen

TEM images of elongated particles prepared using the N-lauroyl-alanine anionic surfactant, using P123 as a dispersant; images are viewed along (a) [311], (b) [100], (c) [111] and (d) [531]

orientations.

Keiichi Miyasaka et al. Interface Focus 2012;2:634-644

©2012 by The Royal Society

Page 9: The role of curvature in silica mesoporous crystals by Keiichi Miyasaka, Alfonso Garcia Bennett, Lu Han, Yu Han, Changhong Xiao, Nobuhisa Fujita, Toen

TEM images for SMC particles capturing the transitions between (a) p6mm to Iad, and (b) Iad to Pnm structures.

Keiichi Miyasaka et al. Interface Focus 2012;2:634-644

©2012 by The Royal Society

Page 10: The role of curvature in silica mesoporous crystals by Keiichi Miyasaka, Alfonso Garcia Bennett, Lu Han, Yu Han, Changhong Xiao, Nobuhisa Fujita, Toen

(a) TEM images of the intergrowth of p6mm and Pnm taken along the [110]cubic axis, (b,c) intergrowth of p6mm and Iad taken along the [111]cubic axis, (d) the Pnm sphere with

icosahedral hollow, and (e) the actual g value distribution of the Pnm and Iad stru...

Keiichi Miyasaka et al. Interface Focus 2012;2:634-644

©2012 by The Royal Society