期刊
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY
卷 134, 期 17, 页码 7211-7214出版社
AMER CHEMICAL SOC
DOI: 10.1021/ja300539p
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资金
- UNC EFRC: Center for Solar Fuels, an Energy Frontier Research Center
- U.S. Department of Energy, Office of Science, Office of Basic Energy Sciences [DE-SC0001011]
- NSF-DMR
- UNC Chemistry Department
- UNC Graduate School
Pt nanoparticles of 2-3 nm and 5-6 nm in diameter were loaded into stable, porous, and phosphorescent metal-organic frameworks (MOFs 1 and 2) built from [Ir(ppy)(2)(bpy)](+)-derived dicarboxylate ligands (L-1 and L-2) and Zr-6(mu(3)-O)(4)(mu(3)-OH)(4)(carboxylate)(12) secondary building units, via MOF-mediated photo reduction of K2PtCl4. The resulting Pt@MOF assemblies serve as effective photocatalysts for hydrogen evolution by synergistic photoexcitation of the MOF frameworks and electron injection into the Pt nanoparticles. Pt@2 gave a turnover number of 7000, approximately five times the value afforded by the homogeneous control, and could be readily recycled and reused.
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