Synthesis and characterization of porous clay-organic heterostructures
This work describes the synthesis and characterization of porous clay-organic heterostructures. The silylation of organically modified clay minerals by a phenyl-bridged silica precursor can create a silica network between the clay layers while simultaneously an exfoliated heterostructure is achieved. Subsequent thermal treatment up to 350 °C removes the aliphatic moieties of the heterostructure and subsequently high surface area is obtained, while a high amount of phenylene groups are still remained trapped in the silica network. This intriguing phenyl/heterostructure possesses a hydrophobic character and accessible surface areas alongside the presence of the phenylene groups embedded in the silica network making this novel material very attractive for potential use in diverse functional applications in catalysis, absorption and as filler in polymer nanocomposites.
A novel phenylene-bridged silica network is developed in the interior of Mt.
Exfoliated nanostructures are easily obtained with high specific surface areas.
Phenylene groups are still remained trapped in the porous organic heterostructures.
KeywordsPorous materials Clay layers Hybrid structures Heterostructures Alkoxides Phenylene groups
Nikolaos Chalmpes gratefully acknowledges the IKY Foundation for the financial support: «This research is co-financed by Greece and the European Union (European Social Fund- ESF) through the Operational Programme «Human Resources Development, Education and Lifelong Learning» in the context of the project “Strengthening Human Resources Research Potential via Doctorate Research” (MIS-5000432), implemented by the State Scholarships Foundation (ΙΚΥ)».
This research did not receive any specific grant from funding agencies in the public, commercial, or not-for-profit sectors. AE would like to thank Dr. Theodore Steriotis and Dr. G. Charalambopoulou for their constructive comments.
Compliance with ethical standards
Conflict of interest
The authors declare that they have no conflict of interest.
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