Advanced Materials

Hydrothermal modification of crystalline imperfections in a platinum sol


  • The authors acknowledge the funding of the S.E.R.C. (PPE, AIK, DAJ), Ernest Oppenheimer Colloid Foundation (DGD), British Alcan plc (AIK, DGD). PPE would like to thank the BP Venture Research Unit for support.


Small metallic particles in colloidal solutions can be used for the production of effective room-temperature catalysts. Here, a method commonlyused in the structural modification of ceramic suspensions is applied to platinum particles and found to significantly improve the crystalline perfection of the colloid, as demonstrated by high-resolution electron microscopy.