▎ 摘　　要

NOVELTY - Noble metal platinum nano catalyst comprises noble metal platinum particle loaded on the transition metal iron oxide, simultaneously graphene oxide as both integral substrate dispersed uniformly. USE - The catalyst is useful for not less than 750 degrees C under conditions using high temperature catalyst (claimed), automobile exhaust treatment and other high-temperature reactions. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is also included for preparing noble metal platinum nano catalyst, comprising (i) using polyol reduction method obtaining 3-5 nm platinum particles, where the platinum material is chloroplatinic acid hexahydrate, reducing agent is ethylene glycol, the surfactant is polyvinyl pyrrolidone, (ii) using electrostatic spinning technology obtaining tris(acetylacetonato) iron(III)/polyvinyl pyrrolidone composite nano fiber, comprising tris(acetylacetonato) iron(III)/polyvinyl pyrrolidone composite fiber as raw material, dissolving in acetic acid aqueous solution of pH 2-3, carrying out hydrothermal reaction for 5-12 hours at 120-200 degrees C, obtained product is hematite, washing with water and ethanol, dispersing in ethanol, (iii) dispersing 3-5 nm platinum particles on the carrier hematite by simple dipping method to obtain catalyst precursor platinum/iron oxide, where the weight ratio of platinum and iron oxide in the catalyst is 1:100-1:200, (iv) dispersing step (iii) catalytic precursor platinum/iron oxide in 6 mg/ml polyvinyl pyrrolidone (Mw about 55000) ethanol solution, using vortex mixer obtaining suspension, (v) using dipping method dispersing catalytic precursor platinum/iron oxide suspension on the surface of graphene oxide, where the catalyst iron oxide with the weight ratio of the graphite oxide is 1:6-1:30, preparing plant transpiration inhibiting material with noble metal platinum nano-catalyst of strong anti-sintering performance.