Gels Impregnated with Metallic Nanoparticles

To obtain composites of carbon with metal nanoparticles, organic gels can be impregnated with metal salt solutions before drying and pyrolysis processes... 

Finally, nanoparticles can also be hosted after the geUirig step by impregnation with suitable metal precursors [9]. Successive soaking of the gels in concentrated... 

The next step in the synthesis of supported metal catalysts via dendrimers is the immobilization of dendrimer-metal nanocomposites onto a solid support. An array of techniques exists for achieving this task. Wet impregnation and sol-gel incorporation of dendrimer-metal nanocomposites may lead to strongly adhered metal particles. Other techniques, such as functionalization of the support to facilitate dendrimer growth or adhesion, provide a route for deposition of empty dendrimers that can subsequently undergo complexation with metal precursors to form dendrimer-metal complexes and eventually zerovalent nanoparticles. Whereas the complexation and reduction phases of catalyst synthesis via dendrimers can be fairly complicated, most methods of dendrimer deposition are rather straightforward. 

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