Official websites use. Share sensitive information only on official, secure websites. Composite materials are made from two or more constituent materials with distinct physical or chemical properties that, when combined, produce a material with characteristics which are at least to some degree different from its individual components. Nanocomposite materials are composed of different materials of which at least one has nanoscale dimensions. A general family of nanoparticle composites concerns the coating of a nanoscale material by a polymer, SiO 2 or carbon.
Other materials, such as graphene or graphene oxide GO , are used as supports forming composites when nanoscale materials are deposited onto them. In this Review we focus on magnetic nanocomposites, describing their synthetic methods, physical properties and applications. Several types of nanocomposites are presented, according to their composition, morphology or surface functionalization.
Keywords: biomedicine, catalysis, nanoparticle synthesis, sensing, surface functionalization. Magnetic nanocomposite materials are made from two or more components with different physical or chemical properties that, when combined, form a material with distinct features, compared to their single constituent parts. Among these materials, at least one should have size in the nanometer range and at least one should be magnetic. Magnetic nanocomposites have drawn increased attention thanks to their remarkable properties.
Numerous combinations of the composing units of nanocomposites exist, which involve magnetic nanoparticles NPs and a second component which is either organic or inorganic. The states of the nanocomposites can be colloidal, powder, fibers, membranes, or films.
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Carbon coating around each individual iron oxide nanoparticle hinders the direct contact of electrode and electrolyte, thus endowing a large reversible specific capacity to the whole composite material. Silica shells prevent the aggregation of the sole nanoparticles and chemical decomposition in solution. Janus and dimer nanocomposite types attract also a significant amount of interest: Janus particles are symmetric in shape but asymmetric in surface properties due to the distribution of different functional groups over the particle surfaces.
