Controllable Synthesis,Structure Characterization And Electroche Mical Properties Of PtCu Nanocrystals

In the rapid development of human society,the prosperity of a country and energy are inseparable,and the energy is also the motive force of the rapid development of a country.But the traditional energy?such as coal,oil,natural gas,etc.?is not renewable and will pollute the environment in the process of using that break the home of human survival,so how to develop the clean energy to protect the environment has become an important subject of the present research.At present,fuel cell is a new type of energy that directly transforms chemical energy into electrical energy by electrochemical way.Direct ethanol fuel cell is a kind of fuel cell and is a battery with ethanol as fuel.Because ethanol has the advantages of non-toxic,pollution-free,renewable,high energy conversion,convenient transportation and existence in nature.Recently,the ethanol fuel cell began to arouse the interest of the people.At present,platinum based nanocatalysts have been widely used in ethanol fuel cells,but the scarce of precious metal Pt on the earth leads to expensive prices,which limits the wide range of applications.So it is a challenging task of joining the transition metal and Pt to form nanoalloys with high catalytic activity and stability.In this paper,several PtCu nanoalloys with high catalytic activity and stability were designed and prepared,and their electrocatalytic properties were tested.?1?Using Pt?acac?₂ and Cu?acac?₂ as metal precursor,polyvinylpyrrolidone?PVP,Mw=8000?and sodium iodide as surface active agent,hydroxylamine hydrochloride as reducing agent and DMF as solvent,PtCu nanoalloy with sub-5 nm was prepared by solvent thermal method at 130?for 8 hours.Under the alkaline medium,the electrocatalytic performance test of the oxygen reduction reaction?ORR?and the oxidation of the anode for the oxidation of the EOR anode is far superior to the commercial Pt/C.?2?Using Pt?acac?₂ and Cu?acac?₂ as metal precursor,polyvinylpyrrolidone?PVP Mw=8000?and sodium iodide as surface active agent,hydroxylamine hydrochloride as reducing agent,DMF as solvent and graphene oxide as carrier,Pt Cu/GO nanoscale alloy was prepared by one step process at 130?for 8 hours.Under the alkaline medium,the electrocatalytic performance test of the oxygen reduction reaction?ORR?and the oxidation of the anode for the oxidation of the EOR anode is far superior to the commercial Pt/C.