Synthesis of platinum nanostructures
View Patent ↗A method for synthesizing noble metal nanostructures is disclosed. The method involves reacting under heat a noble metal precursor, a polyol reducing agent, and a stabilizing polymer. Morphological control is achieved by controlling the reduction rate of the noble metal.
1. A method for forming platinum nanowires comprising:
adding an iron(II) species or an iron(III) species to a reaction mixture comprising a Pt(II) species, a polyol reducing agent, and poly(vinyl pyrrolidone), to form a second reaction mixture; and
heating the second reaction mixture for a period of time suitable for the formation of platinum nanowires.
2. The method of claim 1 , wherein the second reaction mixture is heated in the presence of air.
3. The method of claim 1 , wherein the second reaction mixture is heated in the presence of oxygen.
4. The method of claim 1 , wherein the reaction mixture is formed by heating H 2 PtCl 6 or K 2 PtCl 6 in the presence of the polyol reducing agent and poly(vinyl pyrrolidone).
5. The method of claim 1 , further comprising separating the platinum nanowires from the second reaction mixture.
6. The method of claim 5 , wherein the separating comprises sonication.
7. The method of claim 1 , wherein the polyol reducing agent comprises ethylene glycol.
8. The method of claim 1 , wherein the platinum nanowires are single-crystal platinum nanowires.
9. The method of claim 1 , wherein the platinum nanowires have a mean diameter of about 5 nanometers.
10. The method of claim 1 , wherein the platinum nanowires have a mean length of less than about 250 nanometers.
11. The method of claim 1 , wherein the platinum nanowires have a mean length of less than about 250 nanometers; and a mean diameter of about 5 nanometers.