光催化
卟啉
催化作用
材料科学
可见光谱
辐照
金属有机骨架
化学工程
光化学
金属
纳米技术
光电子学
化学
物理化学
有机化学
吸附
核物理学
冶金
工程类
物理
作者
Quan Zuo,Tingting Liu,Chuanshuang Chen,Yi Ji,X. G. Gong,Yiyong Mai,Yongfeng Zhou
标识
DOI:10.1002/anie.201904058
摘要
Abstract A surfactant‐stabilized coordination strategy is used to make two‐dimensional (2D) single‐atom catalysts (SACs) with an ultrahigh Pt loading of 12.0 wt %, by assembly of pre‐formed single Pt atom coordinated porphyrin precursors into free‐standing metal–organic framework (MOF) nanosheets with an ultrathin thickness of 2.4±0.9 nm. This is the first example of 2D MOF‐based SACs. Remarkably, the 2D SACs exhibit a record‐high photocatalytic H 2 evolution rate of 11 320 μmol g −1 h −1 via water splitting under visible light irradiation ( λ >420 nm) compared with those of reported MOF‐based photocatalysts. Moreover, the MOF nanosheets can be readily drop‐casted onto solid substrates, forming thin films while still retaining their photocatalytic activity, which is highly desirable for practical solar H 2 production.
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