Preparation and characterization of Ni nanoparticles in an MCM mesoporous material

An aluminosilicate with the MCM-41 structure (A1MCM-41) was used as a host for the synthesis of nickel metal nanoparticles. Initially, ion exchange in aqueous solutions allows the introduction of nickel cations into A1MCM-41, and then reduction with sodium borohydride produces nanometer-sized nickel...

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Veröffentlicht in:	Materials research bulletin 1999-07, Vol.34 (9), p.1353-1360
Hauptverfasser:	Jung, Jin-Seung, Chae, Won-Sik, McIntyre, Robert A, Seip, Candace T, Wiley, John B, O’Connor, Charles J
Format:	Artikel
Sprache:	eng
Schlagworte:	A. composites A. nanostructures ALUMINIUM SILICATES B. chemical synthesis C. X-ray diffraction CHEMICAL PREPARATION Chemistry Colloidal state and disperse state COMPOSITE MATERIALS D. magnetic properties Exact sciences and technology General and physical chemistry MAGNETIC SUSCEPTIBILITY MATERIALS SCIENCE MICROSCOPY MICROSTRUCTURE NICKEL PARTICULATES Physical and chemical studies. Granulometry. Electrokinetic phenomena Porous materials X-RAY DIFFRACTION
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Zusammenfassung:	An aluminosilicate with the MCM-41 structure (A1MCM-41) was used as a host for the synthesis of nickel metal nanoparticles. Initially, ion exchange in aqueous solutions allows the introduction of nickel cations into A1MCM-41, and then reduction with sodium borohydride produces nanometer-sized nickel metal particles. Products (Ni-AlMCM-41) were characterized by elemental analysis, transmission electron microscopy (TEM), X-ray powder diffraction (XRD), and magnetic susceptibility. Ni-AlMCM-41 was found to have a Ni:Al:Si ratio of ca. 1:4:28. The nickel metal particles were 1–2 nm in diameter and showed superparamagnetic behavior with a blocking temperature (T b) of 5 K.
ISSN:	0025-5408 1873-4227
DOI:	10.1016/S0025-5408(99)00146-4