Nanoparticles Nanoparticles as Catalysts in Chemical Reactions

Nanoparticle PreparationChemical Methods• Microemulsions- Microemulsions are similar toimpregnation however the metal salt isdissolved in a emulsion which thenimpregnates the porous supportstructure. This method has resulted ingreater control of particle size.• Photochemistryh t- Photochemistry involves a high wattagelight source in order to excite moleculesand add energy to reactions. Theadditional energy allows for depositionsthat might not normally occur.http://www.fbi.gov/hq/lab/labannual05/page_iiic.jpg• Chemical Vapour Deposition- This method involves the vaporizationof metals followed by the formation andgrowth of nanoparticles under vacuumconditions. This method allows for awide variety of support structures.