Pt Nanoparticles@Photoactive Metal-Organic Frameworks: Efficient Hydrogen Evolution via Synergistic Photoexcitation and Electron Injection

被引：626

作者：

Wang, Cheng ^{[1
]}

deKrafft, Kathryn E. ^{[1
]}

Lin, Wenbin ^{[1
]}

机构：

[1] Univ N Carolina, Dept Chem, Chapel Hill, NC 27599 USA

来源：

JOURNAL OF THE AMERICAN CHEMICAL SOCIETY | 2012年 / 134卷 / 17期

关键词：

NANOSCALE COORDINATION POLYMERS; ASYMMETRIC CATALYSIS; SILVER NANOPARTICLES; GOLD NANOPARTICLES; ROOM-TEMPERATURE; WATER REDUCTION; CONTRAST AGENTS; DRUG-DELIVERY; OXIDATION; STORAGE;

D O I：

10.1021/ja300539p

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

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.

引用

页码：7211 / 7214

页数：4

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