Forming alloys with transition metal remarkably decreases the u sage of noble metal and offers benefits for electrocatalysis. Here we introduced a mixed-solvent strategy to synthesize unique Pt Au Cu ternary nanotubes...Forming alloys with transition metal remarkably decreases the u sage of noble metal and offers benefits for electrocatalysis. Here we introduced a mixed-solvent strategy to synthesize unique Pt Au Cu ternary nanotubes(NTs) with porous and rough surface, using high quality Cu nanowires(NWs) as the partial sacrificial templates. We found that Au plays a key role in the enhancement of e lectrocatalytic performance for both methanol oxidation reaction(MOR) and formic acid oxidation reaction(FAOR). The mass activities of Pt Au Cu NTs after acid leaching for MOR and FAOR reach 1698.8 m A mg-1Ptat 0.9 V and 1170 m A mg-1Pt at 0.65 V, respectively. Such ternary NTs show impressive stability due to the irreversibly adsorption of CO* on the Au surface instead of the active Pt surface and the excellent structure stability. The present method could be extended to prepare other new multi-functional electrocatalysts.展开更多
基金supported by the National Natural Science Foundation of China(21431006)the Foundation for Innovative Research Groups of the National Natural Science Foundation of China(21521001)+2 种基金the National Basic Research Program of China(2014CB931800 and 2013CB931800)the Users with Excellence and Scientific Research Grant of Hefei Science Center of CAS(2015HSCUE007 and 2015SRG-HSC038)the Chinese Academy of Sciences(KJZD-EW-M01-1)
文摘Forming alloys with transition metal remarkably decreases the u sage of noble metal and offers benefits for electrocatalysis. Here we introduced a mixed-solvent strategy to synthesize unique Pt Au Cu ternary nanotubes(NTs) with porous and rough surface, using high quality Cu nanowires(NWs) as the partial sacrificial templates. We found that Au plays a key role in the enhancement of e lectrocatalytic performance for both methanol oxidation reaction(MOR) and formic acid oxidation reaction(FAOR). The mass activities of Pt Au Cu NTs after acid leaching for MOR and FAOR reach 1698.8 m A mg-1Ptat 0.9 V and 1170 m A mg-1Pt at 0.65 V, respectively. Such ternary NTs show impressive stability due to the irreversibly adsorption of CO* on the Au surface instead of the active Pt surface and the excellent structure stability. The present method could be extended to prepare other new multi-functional electrocatalysts.
