One-Pot Separation of Tea Components through Selective Adsorption on Pore-Engineered Nanocarbon, Carbon Nanocage
Identifieur interne : 003964 ( Main/Merge ); précédent : 003963; suivant : 003965One-Pot Separation of Tea Components through Selective Adsorption on Pore-Engineered Nanocarbon, Carbon Nanocage
Auteurs : Katsuhiko Ariga [Japon] ; Ajayan Vinu [Japon] ; Masahiko Miyahara [Japon] ; Jonathan P. Hill [Japon] ; Toshiyuki Mori [Japon]Source :
- Journal of the American Chemical Society [ 0002-7863 ] ; 2007.
Abstract
Simple, economical, and toxic-solvent-free one-pot separation of tea components, such as catechin and tannic acids, has been demonstrated using the novel pore-engineered nanocarbon, carbon nanocage (CNC), with regularly arranged cage-type mesopores. The CNC materials possess larger specific surface areas and pore volumes than conventional mesoporous carbon, CMK-3, and also exhibit excellent adsorption capacities for a typical dye (Alizarin Yellow) and tea components (catechin and tannic acids) relative to activated carbon, CMK-3, and mesoporous silica SBA-15. Competitive adsorption of catechin and tannic acid to the CNC material results in highly selective adsorption of tannic acid (ca. 95%) using a very simple one-pot process.
Url:
DOI: 10.1021/ja074870t
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<front><div type="abstract">Simple, economical, and toxic-solvent-free one-pot separation of tea components, such as catechin and tannic acids, has been demonstrated using the novel pore-engineered nanocarbon, carbon nanocage (CNC), with regularly arranged cage-type mesopores. The CNC materials possess larger specific surface areas and pore volumes than conventional mesoporous carbon, CMK-3, and also exhibit excellent adsorption capacities for a typical dye (Alizarin Yellow) and tea components (catechin and tannic acids) relative to activated carbon, CMK-3, and mesoporous silica SBA-15. Competitive adsorption of catechin and tannic acid to the CNC material results in highly selective adsorption of tannic acid (ca. 95%) using a very simple one-pot process.</div>
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