METHOD FOR PRODUCING MONO-COMPONENT SYSTEM AND BI-COMPONENT SYSTEM CUBIC TYPE METAL NANOPARTICLE

摘要

PPROBLEM TO BE SOLVED: To provide a method for producing mono-component system and bi-component system cubic type metal nanoparticles, which enables control of the deposition part of a shell metal and the amount thereof with respect to a core-shell bicomponent system metal nanoparticles in which the core is made of platinum or palladium. PSOLUTION: A specific adsorption auxiliary and a water-soluble dibasic acid salt are mixed in a solution of an ionic compound of platinum or palladium, and the mixture is deposited under reduction condition. For example, a core metal is platinum, a shell metal is silver, and, by controlling a hydrogen reduction time, a reduction temperature, an Ag/Pt mol ratio and a dibasic aid salt/Pt mol ratio, the part at which Ag is deposited on the surfaces of cubic platinum nanoparticles and the amount thereof are controlled. PCOPYRIGHT: (C)2011,JPO&INPIT