RESUMEN
Core@shell spheres made up of a thin layer of resorcinol-formaldehyde enveloping a silica core were prepared by means of a one-step method under Stöber conditions. These spheres are used as a platform for the synthesis of carbon or polymeric capsules, and functionalized nanocomposites.
Asunto(s)
Carbono/química , Formaldehído/química , Polímeros/síntesis química , Resorcinoles/química , Dióxido de Silicio/química , Nanocompuestos/química , Tamaño de la Partícula , Polímeros/química , Propiedades de SuperficieRESUMEN
The performance of mesoporous carbon capsules as electrode materials in electrochemical double layer capacitors (EDLCs) was evaluated in the presence of a variety of electrolytes, including room temperature ionic liquids (ILs).
RESUMEN
A synthetic method for the fabrication of colloidal mesoporous silica nanoparticles of a tunable mesopore size is presented. These nanoparticles form stable colloidal suspensions, have narrow particle size distributions in the 50-300nm range and exhibit a framework-confined porosity made up of large mesopores with a diameter of up to 9nm. The size of the mesopores was enlarged by means of two different swelling agents (SA), i.e. 1,3,5-trimethylbenzene (TMB) and N,N-dimethylhexadecylamine (DMHA). Colloidal mesoporous silica nanoparticles exhibit a strong affinity for the adsorption of hemoglobin (Hb) and the immobilization of lysozyme (Lz). These nanoparticles can adsorb up to 2080mgHbg(-1) support and 690mgLzg(-1) support. Moreover, the adsorption of these biomolecules on silica nanoparticles occurs very quickly and most of what is adsorbed is accommodated on the external surface area of the silica nanoparticles.