Synthetic Route to Nanocomposites Made Up of Inorganic Nanoparticles Confined within a Hollow Mesoporous Carbon Shell

• DOI: 10.1021/cm071713k
• Publication Date: 2007-10-23T04:26:52Z
• Authors: Antonio B. Fuertes; Marta Sevilla; Teresa Valdes-Solis; Pedro Tartaj
• Keywords: Carbon fibers

We present here a novel and simple synthetic strategy for fabricating core/shell materials (diameter ∼400 nm) made up of inorganic nanoparticles confined within hollow mesoporous carbon shell (shell thickness ∼50 nm). This methodology has been applied to the encapsulation variety phases such as Fe3O4/γ-Fe2O3, CoFe2O4, LiCoPO4, NiO, Cr2O3. An important characteristic these composites is that, whereas inner macroporous core can be almost completely filled by nanoparticles, porosity hardly contains deposited nanoparticles. In consequence, exhibit large surface areas (∼500−700 m2·g-1), high pore volumes (∼0.3−0.6 cm3·g-1), accessible pores ∼2−2.5 nm. demonstrated usefulness immobilization an enzyme (lysozyme) proved their easy manipulation means external magnetic field.