A Molecular MoS2 Edge Site Mimic for Catalytic Hydrogen Generation

被引:1102
作者
Karunadasa, Hemamala I. [1 ,2 ]
Montalvo, Elizabeth [1 ]
Sun, Yujie [1 ,2 ]
Majda, Marcin [1 ]
Long, Jeffrey R. [1 ,3 ]
Chang, Christopher J. [1 ,2 ,4 ]
机构
[1] Univ Calif Berkeley, Dept Chem, Berkeley, CA 94720 USA
[2] Lawrence Berkeley Natl Lab, Div Chem Sci, Berkeley, CA 94720 USA
[3] Lawrence Berkeley Natl Lab, Div Mat Sci, Berkeley, CA 94720 USA
[4] Univ Calif Berkeley, Howard Hughes Med Inst, Berkeley, CA 94720 USA
关键词
H-2; EVOLUTION; MOLYBDENUM; COBALT; ELECTROCATALYSTS; COMPLEXES; WATER; NANOCATALYSTS; REDUCTION; CHEMISTRY; LIGANDS;
D O I
10.1126/science.1215868
中图分类号
O [数理科学和化学]; P [天文学、地球科学]; Q [生物科学]; N [自然科学总论];
学科分类号
07 ; 0710 ; 09 ;
摘要
Inorganic solids are an important class of catalysts that often derive their activity from sparse active sites that are structurally distinct from the inactive bulk. Rationally optimizing activity is therefore beholden to the challenges in studying these active sites in molecular detail. Here, we report a molecule that mimics the structure of the proposed triangular active edge site fragments of molybdenum disulfide (MoS2), a widely used industrial catalyst that has shown promise as a low-cost alternative to platinum for electrocatalytic hydrogen production. By leveraging the robust coordination environment of a pentapyridyl ligand, we synthesized and structurally characterized a well-defined Mo-IV-disulfide complex that, upon electrochemical reduction, can catalytically generate hydrogen from acidic organic media as well as from acidic water.
引用
收藏
页码:698 / 702
页数:5
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