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Supported ionic liquid silica nanoparticles (SILnPs) as an efficient and recycl...
Sidhpuria, Kalpesh B.; Daniel-da-Silva, Ana L.; Trindade, Tito; Coutinho, João A. P.Supported ionic liquid nanoparticles (SILnPs) having particle size ranging from 293 ± 2 to 610 ± 11 nm have been prepared by immobilization of ionic liquid, 1-(tri-ethoxy silyl-propyl)- 3-methyl-imidazolium hydrogen sulfate (IL-HSO4) on the surface of silica nanoparticles. The catalytic activity of the prepared SILnPs was investigated for the dehydration of fructose to 5-hydroxymethylfurfural (HMF) in the prese...
In Situ Synthesis of Magnetite Nanoparticles in Carrageenan Gels
Daniel-da-Silva, Ana L.; Trindade, T.; Goodfellow, Brian J.; Costa, Benilde F. O.; Correia, Rui N.; Gil, Ana M.Magnetite nanoparticles have been successfully synthesized in the presence of carrageenan polysaccharides using an in situ coprecipitation method. Iron coordination to the sulfate groups of the polysaccharide was confirmed by FTIR. The polysaccharide type (κ, ι, or λ) and concentration have been varied and their effects on particle morphology and chemical stability of the resultant nanocomposite investigated. T...
In situ synthesis of magnetite nanoparticles in carrageenan gels
Daniel-da-Silva, Ana. L.; Trindade, T.; Goodfellow, Brian J.; Costa, Benilde F. O.; Correia, Rui N.; Gil, Ana M.Magnetite nanoparticles have been successfully synthesized in the presence of carrageenan polysaccharides using an in situ coprecipitation method. Iron coordination to the sulfate groups of the polysaccharide was confirmed by FTIR. The polysaccharide type ( , é, or ì) and concentration have been varied and their effects on particle morphology and chemical stability of the resultant nanocomposite investigated. T...
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