TY - JOUR
T1 - One-pot aqueous route to synthesize highly ordered cubic and hexagonal mesoporous carbons from resorcinol and hexamine
AU - Liu, D.
AU - Lei, J.-H.
AU - Guo, L.-P.
AU - Qu, D.
AU - Li, Y.
AU - Su, B.-L.
PY - 2012/2/1
Y1 - 2012/2/1
N2 - We proposed here a one-pot route to prepare resorcinol/formaldehyde (RF) resin-based carbon materials with highly ordered mesostructures in an aqueous media. Compared with other techniques, the synthesis is a single-step process; neither prepolymerization nor thermal solidification is needed. The crucial difference to the previous methods is that the commonly used formaldehyde is replaced with hexamine. Hexamine can serve as a release source of formaldehyde to control the kinetics of RF polymerization reaction. The combined use of resorcinol and hexamine allows the accelerated synthesis without disturbing the cooperative self-assembly of RF resin and amphiphilic triblock copolymer. A mesophase transformation from body-centered cubic (Im3m) to 2-D hexagonal (p6m) structure can be achieved by simply adding 1,3,5-trimethylbenzene to the synthesis. Especially, this synthesis can be performed not only under weakly basic conditions but also under highly acidic conditions, despite that the acid-catalyzed synthesis will result in the formation of the product with a relatively low thermal stability.
AB - We proposed here a one-pot route to prepare resorcinol/formaldehyde (RF) resin-based carbon materials with highly ordered mesostructures in an aqueous media. Compared with other techniques, the synthesis is a single-step process; neither prepolymerization nor thermal solidification is needed. The crucial difference to the previous methods is that the commonly used formaldehyde is replaced with hexamine. Hexamine can serve as a release source of formaldehyde to control the kinetics of RF polymerization reaction. The combined use of resorcinol and hexamine allows the accelerated synthesis without disturbing the cooperative self-assembly of RF resin and amphiphilic triblock copolymer. A mesophase transformation from body-centered cubic (Im3m) to 2-D hexagonal (p6m) structure can be achieved by simply adding 1,3,5-trimethylbenzene to the synthesis. Especially, this synthesis can be performed not only under weakly basic conditions but also under highly acidic conditions, despite that the acid-catalyzed synthesis will result in the formation of the product with a relatively low thermal stability.
UR - http://www.scopus.com/inward/record.url?scp=80055092923&partnerID=8YFLogxK
U2 - 10.1016/j.carbon.2011.09.002
DO - 10.1016/j.carbon.2011.09.002
M3 - Article
AN - SCOPUS:80055092923
SN - 0008-6223
VL - 50
SP - 476
EP - 487
JO - Carbon
JF - Carbon
IS - 2
ER -