TECHNOLOGY FOCUS - INORGANIC CHEMISTRY - Preferred Components: The metal is platinum, iron, cobalt and/or nickel. The metal precursor is hexachloroplatinic acid, cis-platinum(II) diamine chloride, platinum chloride, platinum dibromide, platinum acetylacetonate, potassium platinum(II) tetrachloride, hydrogen hexahydroxoplatinate, palladium(II) nitrate, tetraamine palladium(II) chloride, tetraamineplatinum(II) hydrogencarbonate, tetraamineplatinum(II) acetate solution, ammonium hexabromoplatinate, ammonium salt of platinum hexachloride and/or hydrates.    TECHNOLOGY FOCUS - ORGANIC CHEMISTRY - Preferred Process: The ion beam is radiated by accelerating ions to 10-100 MeV with a current of 100 nA-50 mu A. The ions are accelerated to 20-70 (preferably 30-60) MeV. The ions are radiated with a current of 500 nA-10 mu A, preferably 800 nA-3 mu A. The process further comprises heating the mixed solution to 20-80 (preferably 50-70) degrees C prior to the radiating with ions. Preferred Components: The ions are hydrogen ions. The solvent is water and/or alcohol. The alcohol is isopropyl alcohol, methanol, ethanol, n-propyl alcohol, butanol, glycerol and/or ethylene glycol. The solvent and the alcohol are mixed in a volume ratio of 995-250:5-750, preferably 970-500:30-500. The mixed solution comprises a metal precursor in a concentration of 30-1 (preferably 20-5) mM. The mixed solution further comprises a carrier; and a dispersing agent, where the dispersing agent is tetrahydrofuran, glycerol and/or ethylene glycol. EXAMPLE - A mixed solution was prepared by adding a hexachloroplatinic acid metal precursor to 400 ml of a mixed solvent including water and isopropyl alcohol in a volume ratio of 940:60 in a reactor. The hexachloroplatinic acid metal precursor was added to the mixed solution in a concentration of 10.25 mM. In addition of carbon nanotubes (0.2 g) were added to the mixed solution. The resulting mixed solution was radiated with ions accelerated at 45 MeV with a current of 500 nA, fabricating a fuel cell catalyst.