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Synthesis of Mesoporous Silica from Sodium Silica Solutions and a Poly(ethylene oxide)‐Based Surfactant
Author(s) -
Sierra Ligia,
Lopéz Betty,
Gil Humberto,
Guth JeanLouis
Publication year - 1999
Publication title -
advanced materials
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 10.707
H-Index - 527
eISSN - 1521-4095
pISSN - 0935-9648
DOI - 10.1002/(sici)1521-4095(199903)11:4<307::aid-adma307>3.0.co;2-6
Subject(s) - pulmonary surfactant , sodium silicate , materials science , mesoporous silica , ethylene oxide , mesoporous material , chemical engineering , condensation polymer , oxide , hydrophobic silica , silicon , sol gel , sodium , silicate , inorganic chemistry , organic chemistry , copolymer , polymer , nanotechnology , catalysis , chemistry , composite material , engineering , metallurgy
Preparation of mesoporous silica by the neutral route has advantages compared with that by electrostatic routes, however, until now the starting materials were alkoxysilanes‐rather expensive silica sources. A synthesis is presented that starts from sodium silicate solutions, as an inexpensive inorganic silicon source, and a poly(ethylene oxide)‐based neutral surfactant. The communication focuses on the influence of the polycondensation conditions, e.g., pH, synthesis temperature, aging time, and surfactant‐to‐silica molar ratio, on the stability and pore size of the materials.