NDLI: Autocatalytic synthesis of multifunctional precursors for fabricating silica microspheres with well-dispersed Ag and Co<sub>3</sub>O<sub>4</sub> nanoparticles

Content Provider	Royal Society of Chemistry (RSC)
Author	Xu, Linxu Hao, Yanjun Zhang, Jiajia Cui, Fang Cui, Tieyu Wang, Yan
Copyright Year	2017
Abstract	Herein, an autocatalytic route to fabricate dual metal ion-equipped organic/inorganic hybrid silica, an ideal precursor for multifunctional silica-based composites integrated with well-dispersed Ag and Co3O4 nanoparticles was demonstrated. Significantly, by rational selection of reactants, such dual metal ion-equipped organic/inorganic hybrid silica can be synthesized through successive spontaneous reactions under near neutral conditions without an additional catalyst. Both the Ag+ and Co2+ ions are introduced into silica by chemical bonds, which favor the formation of small-sized and well-dispersed Ag and Co3O4 nanoparticles without aggregation in the entire silica matrix. After calcination, multifunctional silica composites equipped with well-dispersed Ag and Co3O4 nanoparticles were obtained. The as-obtained silica composites, as indicated by scanning electron microscopy (SEM) and transmission electron microscopy (TEM), have a spherical morphology and smooth surface. TEM tests also reveal the well dispersed fashion of Ag and Co3O4 nanoparticles. In addition, the obtained Ag–Co3O4@SiO2 composites exhibit good catalytic performance in the reduction of methylene blue (MB) with NaBH4 as a reducing agent, and can be readily recycled by an external magnetic field due to their superparamagnetic properties.
Starting Page	899
Ending Page	906
Page Count	8
File Format	HTM / HTML PDF
ISSN	20403364
Volume Number	9
Issue Number	2
Journal	Nanoscale
DOI	10.1039/c6nr08309a
Language	English
Publisher	Royal Society of Chemistry
Access Restriction	Open
Subject Keyword	Transmission electron microscopy Calcination Superparamagnetism Sodium borohydride Autocatalysis Reducing agent Scanning electron microscope Magnetic field Silicon dioxide Composite material Methylene blue
Content Type	Text
Resource Type	Article
Subject	Nanoscience and Nanotechnology

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