Physics

Nanotechnology

Organic chemistry

Metal-organic framework

Hydrogen

Photocatalysis

Electron transfer

Adsorption

Density functional theory

Catalysis

Photocatalytic water splitting

Computational chemistry

Physical chemistry

Chemical physics

Hydrogen production

Noble metal

Chemistry

Metallurgy

Materials science

Condensed matter physics

Acceptor

Photosensitizer

Spectroscopy

Metal

Quantum mechanics

Water splitting

Biochemistry

Photochemistry

Ultrafast laser spectroscopy

Advanced Materials

It is highly desirable yet remains challenging to improve the dispersion and usage of noble metal cocatalysts, beneficial to charge transfer in photocatalysis. Herein, for the first time, single Pt atoms are successfully confined into a metal–organic framework (MOF), in which electrons transfer from the MOF photosensitizer to the Pt acceptor for hydrogen production by water splitting under visible‐light irradiation. Remarkably, the single Pt atoms exhibit a superb activity, giving a turnover frequency of 35 h −1 , ≈30 times that of Pt nanoparticles stabilized by the same MOF. Ultrafast transient absorption spectroscopy further unveils that the single Pt atoms confined into the MOF provide highly efficient electron transfer channels and density functional theory calculations indicate that the introduction of single Pt atoms into the MOF improves the hydrogen binding energy, thus greatly boosting the photocatalytic H 2 production activity.

Single Pt Atoms Confined into a Metal–Organic Framework for Efficient Photocatalysis