Pt Nanoparticles@Photoactive
Metal–Organic
Frameworks: Efficient Hydrogen Evolution via Synergistic Photoexcitation
and Electron Injection
Cheng Wang
Kathryn E. deKrafft
Wenbin Lin
10.1021/ja300539p.s002
https://acs.figshare.com/articles/journal_contribution/Pt_Nanoparticles_Photoactive_Metal_Organic_Frameworks_Efficient_Hydrogen_Evolution_via_Synergistic_Photoexcitation_and_Electron_Injection/2526712
Pt nanoparticles of 2–3 nm and 5–6 nm in
diameter
were loaded into stable, porous, and phosphorescent metal–organic
frameworks (MOFs <b>1</b> and <b>2</b>) built from [Ir(ppy)<sub>2</sub>(bpy)]<sup>+</sup>-derived dicarboxylate ligands (<b>L</b><sub><b>1</b></sub> and <b>L</b><sub><b>2</b></sub>) and Zr<sub>6</sub>(μ<sub>3</sub>-O)<sub>4</sub>(μ<sub>3</sub>-OH)<sub>4</sub>(carboxylate)<sub>12</sub> secondary building
units, via MOF-mediated photoreduction of K<sub>2</sub>PtCl<sub>4</sub>. 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@<b>2</b> gave a turnover number of 7000, approximately five times the value
afforded by the homogeneous control, and could be readily recycled
and reused.
2012-05-02 00:00:00
building units
hydrogen evolution
Electron InjectionPt nanoparticles
MOFs 1
Efficient Hydrogen Evolution
nm
Synergistic Photoexcitation
K 2PtCl
turnover number
MOF frameworks
Pt nanoparticles
electron injection
L 1