Síntese de nanocompósitos magnéticos porosos com potencial aplicação nos processos de encapsulamento de hidrogênio e separação imunomagnética

Abstract

The development of magnetic and porous nanocomposites has received great attention in recent years. Currently, biotechnology has sought to employ magnetic composites in processes of cell separation and purification, and other applications. Moreover, researches on clean energy have tried to use carbon materials as adsorbents and gas sensors, especially on hydrogen storage. In this study, we synthesized porous magnetic composites containing metal nanoparticles embedded in carbon matrix by polymeric precursor method. The composites synthesized were characterized by X-ray diffraction (XRD), Xray fluorescence (EDX), N2 physisorption (BET and BJH), electron microscopy (TEM and SEM) and infrared spectrometry (FT-IR). The analysis confirmed the presence of metals nanoparticles, responsible for the ferromagnetic behavior and the chemisorption sites, embedded in the matrix of amorphous carbon, responsible for porosity and the sites of physisorption. Temperature-programmed reduction assays and immunofluorescence microscopy demonstrated the potential application of composites on immunomagnetic separation and hydrogen storage processes