NOVELTY - The catalyst has a nanoporous gold having one or more coatings of one or more additional metals on its surface. The additional metals being selected from the group comprising: a group 8 element, a group 10 element, a group 15 element, or a combination thereof. The group 8 elements being ruthenium, the group 10 elements being palladium and platinum and the group 15 elements being bismuth.    USE - Catalyst e.g. NPG supported platinum catalyst (NPG-Pt) for fuel cell used e.g. as power source for vehicle and other mobile device.    ADVANTAGE - Enables to prepare a highly efficient catalyst with low precious metal loading for a fuel cell, providing advantages such as good conductivity, good stability, high platinum utilization and low precious metal loading of NPG-Pt catalyst, while avoiding the disadvantages of poisoning and poor catalytic activity of a NPG-Pt catalyst. The NPG has superior electron transfer ability and superior chemical and electrochemical corrosion resistance than a traditional fuel cell catalyst. The three dimensional structure of NPG can make it much easier for reactant to reach the surface of electrode. The NPG can easily be made into a membrane structure which is compatible with fuel cell electrolyte membrane, thus NPG is a better catalyst support. A platinum catalyst can be bonded to the surface of NPG with a sub-atomic layer or atomic layers by surface ion adsorption combined with electrochemical reduction, or under potential deposition (UPD) combined with in-situ replacement, or reduction in hydrazine vapor, improving the utilization of platinum catalyst. The addition of a sub-atomic layer of bismuth (Bi) or ruthenium (Ru) on the surface of an NPG-Pt improves the catalytic activity by adjusting the reaction route of the formic acid oxidation reaction, changing the atomic structure, and providing a dual-channel mechanism. The Bi-modified or Ru-modified NPG-Pt catalyst can decrease the precious metal loading by about an order of magnitude while maintaining the same discharge level, and also decrease the platinum loading by about two orders of magnitude.    DETAILED DESCRIPTION - An INDEPENDENT CLAIM is also included for a method of preparing a catalyst for a fuel cell.    DESCRIPTION OF DRAWING(S) - The drawing shows the graph of the full cyclic voltammetry (CV) curves of NPG-3Pt in 0.1M perchloric acid.