2006
DOI: 10.1038/nmat1636
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Abstract: Precursor nanoparticles that form spontaneously on hydrolysis of tetraethylorthosilicate in aqueous solutions of tetrapropylammonium (TPA) hydroxide evolve to TPA-silicalite-1, a molecular-sieve crystal that serves as a model for the self-assembly of porous inorganic materials in the presence of organic structure-directing agents. The structure and role of these nanoparticles are of practical significance for the fabrication of hierarchically ordered porous materials and molecular-sieve films, but still remain… Show more

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Cited by 420 publications
(654 citation statements)
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“…S9) after aging, the inorganic-organic species may mainly come from the tetrapropylammonium-containing silicates (21). Meanwhile, it is worth noting that the particle size of the solid intermediates became larger with the aging period, which is consistent with previous reports (25,26). These results indicate that the short-range order might have started to form during the aging stage, which creates an environment favorable for the immediate crystal growth under high temperatures, resulting in the synthesis on the order of seconds.…”
Section: Significancesupporting
confidence: 89%
“…S9) after aging, the inorganic-organic species may mainly come from the tetrapropylammonium-containing silicates (21). Meanwhile, it is worth noting that the particle size of the solid intermediates became larger with the aging period, which is consistent with previous reports (25,26). These results indicate that the short-range order might have started to form during the aging stage, which creates an environment favorable for the immediate crystal growth under high temperatures, resulting in the synthesis on the order of seconds.…”
Section: Significancesupporting
confidence: 89%
“…Mineral systems may crystallize through an amorphous precursor at sufficiently high supersaturation (5,20,46,(66)(67)(68)(69), but the mechanism of the transition is unclear for most systems. For calcium carbonate formed abiotically from aqueous solution, the ACC precursor phase is initially hydrated (64,66).…”
Section: Amorphous Phasesmentioning
confidence: 99%
“…1 However, the self-assembly steps by which such important materials form are still not well understood and thus the synthesis of new topologies is still something of a hit and miss process. [2][3][4] Understanding the critical stages in microporous materials crystallisation is then clearly the first step towards realising the possibility of rational microporous materials design for specific purposes e.g. tailoring a material's properties for a specific catalytic reaction.…”
mentioning
confidence: 99%