文献类型：期刊文献

英文题名：Ultrathin Metal-Organic Framework Nanosheets with Ultrahigh Loading of Single Pt Atoms for Efficient Visible-Light-Driven Photocatalytic H2 Evolution

作者：Zuo, Quan[1];Liu, Tingting[2,3];Chen, Chuanshuang[1];Ji, Yi[1];Gong, Xueqing[2,3];Mai, Yiyong[1];Zhou, Yongfeng[1]

机构：[1]Shanghai Jiao Tong Univ, Sch Chem & Chem Engn, State Key Lab Met Matrix Composites, Shanghai Key Lab Elect Insulat & Thermal Ageing, 800 Dongchuan Rd, Shanghai 200240, Peoples R China;[2]East China Univ Sci & Technol, Key Lab Adv Mat, Ctr Computat Chem, Shanghai 200237, Peoples R China;[3]East China Univ Sci & Technol, Res Inst Ind Catalysis, Shanghai 200237, Peoples R China

年份：2019

卷号：58

期号：30

起止页码：10198

外文期刊名：ANGEWANDTE CHEMIE-INTERNATIONAL EDITION

收录：;EI(收录号：20192707123759);WOS:【SCI-EXPANDED(收录号:WOS:000476452700024)】；

基金：This work was financially supported by the National Natural Science Foundation of China (21890733, 51773115, 51573091, and 21774076), the Program for Basic Research of Shanghai Science and Technology Commission (17JC1403200 and 17JC1403400), the Program of Shanghai Academic Research Leader (19XD1421700), and the Program of Shanghai Eastern Scholar. The authors also appreciate Shanghai Synchrotron Radiation Facility (SSRF) (Beamline BL14W1) for the synchrotron beam time.

语种：英文

外文关键词：hydrogen evolution; metal-organic frameworks; photocatalysis; single-atom catalysts; two-dimensional materials

摘要：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 mu mol g(-1) h(-1) via water splitting under visible light irradiation (lambda>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.