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Elsevier, Applied Surface Science, (266), p. 337-343

DOI: 10.1016/j.apsusc.2012.12.021

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Silver nanoparticles incorporated onto ordered mesoporous silica from Tollen's reagent

Journal article published in 2013 by M. Zienkiewicz-Strzałka, S. Pasieczna-Patkowska, M. Kozak, S. Pikus ORCID
This paper is available in a repository.
This paper is available in a repository.

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Abstract

Noble metal nanostructures supported on mesoporous silica are bridge between traditional silica adsorbents and modern catalysts. In this work the Ag/SBA-15 mesoporous materials were synthesized and characterized. Various forms of nanosilver supported on ordered mesoporous template have been successfully obtained via proposed procedures. In all synthesized materials, Tollen's reagent (diammine silver complex [Ag(NH3)2]+) was used as a silver source. Silver nanoparticles were prepared by reduction of ammoniacal silver complex by formaldehyde in the solution of stabilizer. After reduction, Ag nanoparticles could be deposited on SBA-15, or added during traditional synthesis of SBA-15 giving silver or silver chloride nanoparticles in the combination with porous silica. Silver nanostructures as nanoparticles or nanowires were also embedded onto the SBA-15 by incipient wetness impregnation of silver ions. Absorbed silver ions were next reduced under hydrogen at high temperature.