光催化
材料科学
金属有机骨架
光化学
催化作用
超快激光光谱学
分解水
光催化分解水
电子转移
光敏剂
金属
制氢
氢
贵金属
密度泛函理论
纳米技术
光谱学
接受者
色散(光学)
化学物理
物理化学
计算化学
化学
吸附
有机化学
冶金
物理
光学
量子力学
生物化学
凝聚态物理
作者
Xinzuo Fang,Qichao Shang,Yu Wang,Long Jiao,Tao Yao,Yafei Li,Qun Zhang,Yi Luo,Hai‐Long Jiang
标识
DOI:10.1002/adma.201705112
摘要
Abstract 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.
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