TECHNOLOGY FOCUS - INORGANIC CHEMISTRY - Preparation (Claimed): Preparation of (I) comprises: carrying out the synthesis in the consecutive steps of microwaving and sonicating of a reaction mixture comprising chloroplatinic acid, a tin salt, and an oxides comprising titanium dioxide, zirconium dioxide or cerium dioxide. Preferred Process: The process further comprises adding ruthenium during the microwave (MW) and/or sonochemical (SC) synthesis steps, to form platinum-tin-ruthenium-titanium dioxide. In the process, M (having titanium dioxide, zirconium dioxide, or cerium dioxide), is added during the SC synthesis step, using a templating agent comprising dodecylamine, octadecylamine or sodium dodecylsulfate. The method comprises: precipitating platinum and tin on a surface located in a reaction zone saturated with chloroplatinic acid and stannous chloride, and comprising an oxides of titanium dioxide, zirconium dioxide or cerium dioxide; and synthesizing the catalyst, as the reactants are pumped into the reaction zone, where the reaction zone is exposed to MW or SC. The synthesis is carried out in continuous manner. The process comprises synthesizing particles by means of MW, and further plating the surface with the particles by applying SC. The process comprises sonicating the reaction mixture comprising chloroplatinic acid, stannous chloride, a metal oxide, and a substrate, where the substrate is carbon, woven and non woven metallic substrate, composite polymer, or conductive particles, by providing a catalyst within a porous substrate. The process comprises electromagnetic radiation in the range of GHz-THz. The microwave process comprises the generation of plasma. Preferred Components: The catalyst further comprises ruthenium. The carbon comprises graphite. The substrate comprises stainless steel, titanium nickel, expended metal or metal foam. The conductive particles comprise carbon, gold, titanium or silver. The catalyst is a part of an electrode. SPECIFIC COMPOUNDS - 4 Compounds (I) are specifically claimed i.e. platinum tin titanium dioxide complex of formulae (Pt1-Sn1-(TiO2)1), (Pt1-Sn1-(TiO2)(0.5)), (Pt(0.75)-Sn(0.25)-(TiO2)1) and (Pt(0.25)-Sn(0.75)-(TiO2)1).    EXAMPLE - Stannous chloride (30.14 mg) was dissolved in ethylene glycol (50 g) by vigorous stirring. A stoichiometric amount of chloroplatinic acid (77.85 mg) was added and the solution was bubbled with pure argon for 10 minutes. Then, the solution was irradiated by microwave for 10 minutes under argon atmosphere. After cooling, the powder product was washed 3 times with ethanol and dried. After that, carbon black or mesoporous titanium dioxide support was added. Carbonized porous materials (e.g. Toray) were used as a substrate for direct deposition of the catalysts. The electrodes were placed in a flow cell glass reactor connected to a glass condenser to avoid solvent evaporation. Reactants solution was streamed through the cell using a peristaltic pump at flow rate of less than 1 ml/minute. After cooling, the electrode containing the product catalysts, strongly bonded to the inner pour walls, was rinsed with ethanol and dried.