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Titolo:
Layer-by-layer assembly of nanozeolite - Zeolite coated fibers and hollow zeolite fibers
Autore:
Wang, YJ; Hu, JH; Tang, Y; Yang, WL; Ke, C; Wang, XD;
Indirizzi:
Fudan Univ, Dept Chem, Shanghai 200433, Peoples R China Fudan Univ Shanghai Peoples R China 200433 nghai 200433, Peoples R China Fudan Univ, Dept Macromol Sci, Shanghai 200433, Peoples R China Fudan Univ Shanghai Peoples R China 200433 nghai 200433, Peoples R China Fudan Univ, Key Lab Mol Engn Polymers, Shanghai 200433, Peoples R China Fudan Univ Shanghai Peoples R China 200433 nghai 200433, Peoples R China
Titolo Testata:
ACTA CHIMICA SINICA
fascicolo: 7, volume: 59, anno: 2001,
pagine: 1084 - 1088
SICI:
0567-7351(2001)59:7<1084:LAON-Z>2.0.ZU;2-3
Fonte:
ISI
Lingua:
CHI
Soggetto:
GLASS-FIBERS; SILICALITE-1; FABRICATION; CRYSTALS; SPHERES;
Keywords:
zeolite coated fibers; hollow zeolite fibers; nanozeolite; layer-by-layer;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Physical, Chemical & Earth Sciences
Citazioni:
15
Recensione:
Indirizzi per estratti:
Indirizzo: Tang, Y Fudan Univ, Dept Chem, Shanghai 200433, Peoples R China Fudan Univ Shanghai Peoples R China 200433 0433, Peoples R China
Citazione:
Y.J. Wang et al., "Layer-by-layer assembly of nanozeolite - Zeolite coated fibers and hollow zeolite fibers", ACT CHIM S, 59(7), 2001, pp. 1084-1088

Abstract

Zeolite coated fibers (abbreviated as ZCF) were successfully fabricated using carbon fibers as templates and nanozeolite as building block, through layer - by - layer assembly technique. After removal of the templates by calcination, intact hollow fibers of zeolite (abbreviated as HFZ) were also obtained. The optimum performance conditions for obtaining these types of materials were systematically studied. The pH value of the zeolite colloidal solution was a key factor affecting the fabrication of these zeolite coated fibers and hollow zeolite fibers. Other conditions, such as ionic strength of the dipping solution, drying the samples after every layer of zeolite nanocrystals deposited and adsorbing a PDDA layer on the silicalite - 1 coated carbon fibers before drying also bad influence on fabricating intact fibers. The wall thickness and composition of these novel materials could be readily tailored by varying the number of nanozeolite/PDDA [poly(diallyldimethyl ammonium chloride)] deposition cycles and zeolite types used, respectively. The hollow zeolite fibers with hybrid walls were also fabricated through stepwise deposition of different kinds of nanozeolites.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 28/03/20 alle ore 14:19:15