TECHNOLOGY FOCUS - CHEMICAL ENGINEERING - Preferred Method: Manufacturing catalyst product further comprises separating the nanoparticle product from the solution. Separating is accomplished by at least one of centrifuging, washing, and evaporation. The method also comprises heating the catalyst nanoparticles under vacuum for a selected period of time to remove volatile organic residuals from the catalyst nanoparticles. The nanoparticle product is plate-shaped. The method further comprises pre-mixing the support material in a selected organic solvent until homogenized prior to mixing with the metal organic complex precursor. It comprises dissolving the metal organic complex precursors in an organic solvent prior to mixing with the support material. The selected organic solvent and the organic solvent are different or the same. The method further comprises periodically shaking the mixture during step (d). The metal ion is selected from titanium, chromium, manganese, iron, copper, nickel, cobalt, yttrium, zirconium, niobium, molybdenum, technetium, ruthenium, rhodium, palladium, silver, indium, tin, barium, hafnium, tantalum, rhenium, osmium, iridium, platinum, gold, thallium, lead, bismuth, lanthanum, samarium, and its combinations or alloys or metal oxides. The ligand is selected from carboxylate, acetylacetonate (acac), fluoronated acac, alkoxy, azide, carbonyl, nitrate, amine, halide, nitro, and its combinations. The support material is selected from carbon black, graphite, titanium dioxide, carbon nanotube, nanowire, nanofiber and its combination. Solvent is selected from methanol, ethanol, 2-propanol, hexane, hexanes, chloroform, dichloromethane and its combinations. Step (d) is accomplished by irradiation, where irradiation comprises at least one of ultraviolet light, laser light, high energy beams, and microwaves. Preferred Product: In the catalyst nanoparticle product, the thickness is at least about 25% less than the maximum diameter of the top surface. The top surface has a maximum diameter of about 500 nm or less; the top surface has a maximum diameter of from about 2 to about 50 nm; or the top surface has a maximum diameter of from about 5 and about 25 nm. The catalyst nanoparticle product has a thickness of about 10 nm or less. It comprises a catalyst nanoparticles selected from titanium, chromium, manganese, iron, copper, nickel, cobalt, yttrium, zirconium, niobium, molybdenum, technetium, ruthenium, rhodium, palladium, silver, indium, tin, barium, hafnium, tantalum, rhenium, osmium, iridium, platinum, gold, thallium, lead, bismuth, lanthanum, samarium, and its combinations or alloys. The catalyst nanoparticles comprise polycrystalline platinum or platinum-alloys. The catalyst nanoparticles are attached to a support material. The support material comprises one of more of carbon black, graphite, and titanium dioxide. At least some of the catalyst nanoparticles are porous. The catalyst nanoparticle product further comprises crystallographic defects, where crystallographic defects comprising at least one of stacking falls, dislocations, twins, vacancies, and lattice mismatches. EXAMPLE - No suitable example given.