Method of preparing nano-sized catalyst on carbon support

摘要

The present invention provides a method of synthesizing a nano-sized transition metal catalyst on a carbon support, including dissolving a stabilizer in ethanol thus preparing a mixture solution, adding a support to the mixture solution thus preparing a dispersion solution, dissolving a transition metal precursor in ethanol thus preparing a precursor solution, mixing the precursor solution with the dispersion solution with stirring, and then performing reduction, thus preparing the nano-sized transition metal catalyst. This method enables the synthesis of transition metal nanoparticles supported on carbon powder having a narrow particle size distribution and a wide degree of dispersion through a simple process, and is thus usefully applied to the formation of an electrode material or the like of a fuel cell.

主权项

1. A method of synthesizing a nano-sized transition metal catalyst, comprising:
dissolving cetyltrimethylammonium bromide as a stabilizer in ethanol to prepare a mixture solution; adding a support to the mixture solution to prepare a dispersion solution; dissolving a transition metal precursor comprising Ir in ethanol to prepare a precursor solution and mixing the precursor solution with the dispersion solution to prepare a dispersed precursor solution; and reducing the dispersed precursor solution using NaBH4 as a reducing agent to prepare nanoparticles, wherein cetyltrimethylammonium bromide is present in a molar ratio relative to transition metal precursor comprising iridium of from about 0.25 to about 1.0.