Carbon-supported base metal nanoparticles: cellulose at work.

Autor: Hoekstra J; Organic Chemistry&Catalysis Debye Institute for Nanomaterials Science, Utrecht University, Universiteitsweg 99, 3584 CG Utrecht (The Netherlands), Fax: (+31) 30-2523615 http://www.uu.nl/science/occ., Versluijs-Helder M, Vlietstra EJ, Geus JW, Jenneskens LW
Jazyk: angličtina
Zdroj: ChemSusChem [ChemSusChem] 2015 Mar; Vol. 8 (6), pp. 985-9. Date of Electronic Publication: 2015 Feb 20.
DOI: 10.1002/cssc.201403364
Abstrakt: Pyrolysis of base metal salt loaded microcrystalline cellulose spheres gives a facile access to carbon-supported base metal nanoparticles, which have been characterized with temperature-dependent XRD, SEM, TEM, ICP-MS and elemental analysis. The role of cellulose is multifaceted: 1) it facilitates a homogeneous impregnation of the aqueous base metal salt solutions, 2) it acts as an efficacious (carbonaceous) support material for the uniformly dispersed base metal salts, their oxides and the metal nanoparticles derived therefrom, and 3) it contributes as a reducing agent via carbothermal reduction for the conversion of the metal oxide nanoparticles into the metal nanoparticles. Finally, the base metal nanoparticles capable of forming metastable metal carbides catalytically convert the carbonaceous support into a mesoporous graphitic carbon material.
(© 2015 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim.)
Databáze: MEDLINE
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