Iridium(Ir)-based nanomaterials are promising electrocatalysts for water splitting,and to alleviate their costs as well as improve the performances are always important tasks.Polyoxometalates(POMs)composed of abundant...Iridium(Ir)-based nanomaterials are promising electrocatalysts for water splitting,and to alleviate their costs as well as improve the performances are always important tasks.Polyoxometalates(POMs)composed of abundant metal,oxygen,and heteroatoms are nanoclusters with defined structures.Benefitting from the inherent advantages of POMs,highly dispersive and"unprotected"Ir nanoparticles originating from Ir-based colloid solution were successfully anchored on POM-derived WO_(3)/rGO nanocomposites for the first time.Interestingly,the obtained hybrid material Ir/WO_(x)/rGO delivered improved electrocatalytic performance for water splitting,which is attributed to the addition of only quite small amount of POM derivatives.This work is also the first proof that POM can be employed as precursor to construct metal oxides to support Ir catalysts,providing a new vision for the design of advanced multi-metal electrocatalysts.展开更多
基金supported by Beijing Municipal Science and Technology Project(No.Z161100001116080)Cross training plan for high level talents in Beijing colleges and university+5 种基金Major Project of the Ministry of Science and Technology(No.2016YFA0200904,2016YFC0600605)Chinese Academy of Geological Sciences Fundamental Research projects(No.YYWF201619)Comprehensive geological survey of Yunnan Anning Mine Concentration Zone(No.DD20190589)National Natural Science Foundation of China(No.21271068,21401050)the Natural Science Foundation of Hubei Province(No.2015CFA131)Wuhan Applied Basic Research Program(No.2014010101010020)Z.X.,P.W.,P.J.,and M.L.provided the research funding
文摘Iridium(Ir)-based nanomaterials are promising electrocatalysts for water splitting,and to alleviate their costs as well as improve the performances are always important tasks.Polyoxometalates(POMs)composed of abundant metal,oxygen,and heteroatoms are nanoclusters with defined structures.Benefitting from the inherent advantages of POMs,highly dispersive and"unprotected"Ir nanoparticles originating from Ir-based colloid solution were successfully anchored on POM-derived WO_(3)/rGO nanocomposites for the first time.Interestingly,the obtained hybrid material Ir/WO_(x)/rGO delivered improved electrocatalytic performance for water splitting,which is attributed to the addition of only quite small amount of POM derivatives.This work is also the first proof that POM can be employed as precursor to construct metal oxides to support Ir catalysts,providing a new vision for the design of advanced multi-metal electrocatalysts.
