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Titolo:
MATRIX-BOUND NANOCHEMICAL POSSIBILITIES
Autore:
ANDERSON PA; BELL RG; CATLOW CRA; CHANG FL; DENT AJ; EDWARDS PP; GAMESON I; HUSSAIN I; PORCH A; THOMAS JM;
Indirizzi:
UNIV BIRMINGHAM,SCH CHEM BIRMINGHAM B15 2TT W MIDLANDS ENGLAND ROYAL INST GREAT BRITAIN LONDON W1X 4BS ENGLAND UNIV BIRMINGHAM,SCH ELECT & ELECT ENGN BIRMINGHAM B15 2TT W MIDLANDS ENGLAND DARESBURY LAB WARRINGTON WA4 4AD CHESHIRE ENGLAND
Titolo Testata:
Chemistry of materials
fascicolo: 8, volume: 8, anno: 1996,
pagine: 2114 - 2120
SICI:
0897-4756(1996)8:8<2114:MNP>2.0.ZU;2-S
Fonte:
ISI
Lingua:
ENG
Soggetto:
POTASSIUM ZEOLITE-L; ABSORPTION-SPECTRA; CHAINS; SELENIUM; ELECTRON; DEPENDENCE; IONIZATION; SIMULATION; RESONANCE; CHANNELS;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Science Citation Index Expanded
Science Citation Index Expanded
Citazioni:
40
Recensione:
Indirizzi per estratti:
Citazione:
P.A. Anderson et al., "MATRIX-BOUND NANOCHEMICAL POSSIBILITIES", Chemistry of materials, 8(8), 1996, pp. 2114-2120

Abstract

In this paper We highlight through two examples the potential of zeolitic host materials for the production of totally engineered macroscopic-scale electronic structures that are made up of vast arrays of reduced dimensionality subunits. Through a novel contactless microwave cavity technique we have investigated the electrical conductivity and dielectric properties of a mesoscopic assembly of ultrafine (atomic-scale) wires of potassium prepared within a highly structured aluminosilicate matrix, zeolite L. We have observed an increase in room-temperatureconductivity of around 5 orders of magnitude relative to unmodified zeolite, which may be ascribed to thermally activated electronic conduction. In our second example, a combined X-ray/EXAFS study has providedvaluable insights into the reduction process involved in the preparation of nanoscale ferromagnetic cobalt particles in zeolite X. In addition, detailed calculations of cation solvation energies represent the first attempt to explain the driving force behind the two important and related chemical processes-namely the dissolution of elemental metals and ionic salts in dehydrated zeolites-used to incorporate metal species into the zeolite matrix in these two cases.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 19/09/20 alle ore 21:57:19