期刊
ENERGY & ENVIRONMENTAL MATERIALS
卷 4, 期 4, 页码 681-686出版社
WILEY
DOI: 10.1002/eem2.12150
关键词
polyoxometalates; iridium; electrocatalyst; water splitting
资金
- Beijing Municipal Science and Technology Project [Z161100001116080]
- Cross training plan for high level talents in Beijing colleges and university
- Major Project of the Ministry of Science and Technology [2016YFA0200904, 2016YFC0600605]
- Chinese Academy of Geological Sciences Fundamental Research projects [YYWF201619]
- Comprehensive geological survey of Yunnan Anning Mine Concentration Zone [DD20190589]
- National Natural Science Foundation of China [21271068, 21401050]
- Natural Science Foundation of Hubei Province [2015CFA131]
- Wuhan Applied Basic Research Program [2014010101010020]
This study successfully anchored highly dispersive and unprotected Ir nanoparticles on POM-derived WO3/rGO nanocomposites, which led to improved electrocatalytic performance for water splitting. This work also demonstrated the potential of using POMs as precursors to construct metal oxides to support Ir catalysts for advanced multi-metal electrocatalysts design.
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 WO3/rGO nanocomposites for the first time. Interestingly, the obtained hybrid material Ir/WOx/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.
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