TY - JOUR
T1 - Tailoring the microstructure and permeation properties of bridged organosilica membranes via control of the bond angles
AU - Guo, Meng
AU - Kanezashi, Masakoto
AU - Nagasawa, Hiroki
AU - Yu, Liang
AU - Yamamoto, Kazuki
AU - Gunji, Takahiro
AU - Ohshita, Joji
AU - Tsuru, Toshinori
N1 - Publisher Copyright:
© 2019 Elsevier B.V.
PY - 2019/8/15
Y1 - 2019/8/15
N2 - Sol-gel-derived organosilica membranes with different linking groups consisting of 2 carbon atoms (ethane, ethylene, and acetylene)were fabricated using bis(triethoxysilyl)ethane (BTESE), bis(triethoxysilyl)ethylene (BTESEthy), and bis(triethoxysilyl)acetylene (BTESA). No research group has ever proposed tailoring the microstructure and permeation properties of bridged organosilica membranes as a way to control the bond angles. In this study, however, we found that increases in the Si–O–Si and Si–C–C bond angles contributed to the formation of a loose and uniform structure, which was suggested by the blue shift of Si–O–Si and Si–C–C bonds in the FT-IR spectra. BTESA membranes featured a more open and accessible pore structure, which was suitable for the separation of C3H6/C3H8. The present study provides a novel way to design the microstructure and permeation properties of organosilica membranes via controlling the bond angles in the network structure.
AB - Sol-gel-derived organosilica membranes with different linking groups consisting of 2 carbon atoms (ethane, ethylene, and acetylene)were fabricated using bis(triethoxysilyl)ethane (BTESE), bis(triethoxysilyl)ethylene (BTESEthy), and bis(triethoxysilyl)acetylene (BTESA). No research group has ever proposed tailoring the microstructure and permeation properties of bridged organosilica membranes as a way to control the bond angles. In this study, however, we found that increases in the Si–O–Si and Si–C–C bond angles contributed to the formation of a loose and uniform structure, which was suggested by the blue shift of Si–O–Si and Si–C–C bonds in the FT-IR spectra. BTESA membranes featured a more open and accessible pore structure, which was suitable for the separation of C3H6/C3H8. The present study provides a novel way to design the microstructure and permeation properties of organosilica membranes via controlling the bond angles in the network structure.
KW - Bond angle
KW - Gas permeation
KW - Microstructure design
KW - Organosilica membrane
UR - http://www.scopus.com/inward/record.url?scp=85065407756&partnerID=8YFLogxK
U2 - 10.1016/j.memsci.2019.04.072
DO - 10.1016/j.memsci.2019.04.072
M3 - Article
AN - SCOPUS:85065407756
SN - 0376-7388
VL - 584
SP - 56
EP - 65
JO - Journal of Membrane Science
JF - Journal of Membrane Science
ER -