Platinum nanoparticles are usually in the form of a suspension or colloid of nanoparticles of platinum in a fluid, usually water. A colloid is technically defined as a stable dispersion of particles in a fluid medium (liquid or gas).
Spherical platinum nanoparticles can be made with sizes between about 2 and 100 nanometres (nm), depending on reaction conditions.[1][2] Platinum nanoparticles are suspended in the colloidal solution of brownish-red or black color. Nanoparticles come in wide variety of shapes including spheres, rods, cubes,[3] and tetrahedra.[4]
Platinum nanoparticles are the subject of substantial research,[5][6][7] with potential applications in a wide variety of areas. These include catalysis,[7] medicine,[5] and the synthesis of novel materials with unique properties.[2][6][7]
^Bigall, Nadja C.; Härtling, Thomas; Klose, Markus; Simon, Paul; Eng, Lukas M.; Eychmüller, Alexander (10 December 2008). "Monodisperse Platinum Nanospheres with Adjustable Diameters from 10 to 100 nm: Synthesis and Distinct Optical Properties". Nano Letters. 8 (12): 4588–4592. Bibcode:2008NanoL...8.4588B. doi:10.1021/nl802901t. PMID19367978.
^ abRamirez, E.; Eradès, L.; Philippot, K.; Lecante, P.; Chaudret, B. (3 September 2007). "Shape Control of Platinum Nanoparticles". Advanced Functional Materials. 17 (13): 2219–2228. doi:10.1002/adfm.200600633. S2CID96196075.
^ abKim J, Takahashi M, Shimizu T, et al. (June 2008). "Effects of a potent antioxidant, platinum nanoparticle, on the lifespan of Caenorhabditis elegans". Mech. Ageing Dev. 129 (6): 322–31. doi:10.1016/j.mad.2008.02.011. PMID18400258. S2CID25182520.
^ abMeng, Hui; Zhan, Yunfeng; Zeng, Dongrong; Zhang, Xiaoxue; Zhang, Guoqing; Jaouen, Frédéric (July 2015). "Factors Influencing the Growth of Pt Nanowires via Chemical Self-Assembly and their Fuel Cell Performance". Small. 11 (27): 3377–3386. doi:10.1002/smll.201402904. PMID25682734.
^ abcNarayanan, Radha; El-Sayed, Mostafa A. (July 2004). "Shape-Dependent Catalytic Activity of Platinum Nanoparticles in Colloidal Solution". Nano Letters. 4 (7): 1343–1348. Bibcode:2004NanoL...4.1343N. doi:10.1021/nl0495256.