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Advanced functional materials v.27 no.4, 2017년, pp. -    SCI SCIE
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Unique PCoN Surface Bonding States Constructed on g‐C3N4 Nanosheets for Drastically Enhanced Photocatalytic Activity of H2 Evolution

Li, Chunmei (School of Chemical & Biomedical Engineering, Nanyang Technological University, 62 Nanyang Drive, Singapore, 637459, Singapore ); Du, Yonghua (Institute of Chemical and Engineering Sciences, 1 Pesek Road, Jurong Island, Singapore, 627833, Singapore ); Wang, Danping (School of Materials Science and Engineering, Nanyang Technological University, 50 Nanyang Avenue, Singapore, 639798, Singapore ); Yin, Shengming (School of Chemical & Biomedical Engineering, Nanyang Technological University, 62 Nanyang Drive, Singapore, 637459, Singapore ); Tu, Wenguang (School of Chemical & Biomedical Engineering, Nanyang Technological University, 62 Nanyang Drive, Singapore, 637459, Singapore ); Chen, Zhong (School of Materials Science and Engineering, Nanyang Technological University, 50 Nanyang Avenue, Singapore, 639798, Singapore ); Kraft, Markus (School of Chemical & Biomedical Engineering, Nanyang Technological University, 62 Nanyang Drive, Singapore, 637459, Singapore ); Chen, Gang ( ); Xu, Rong ( );
  • 초록  

    Developing high‐efficiency and low‐cost photocatalysts by avoiding expensive noble metals, yet remarkably improving H 2 evolution performance, is a great challenge. Noble‐metal‐free catalysts containing Co(Fe)NC moieties have been widely reported in recent years for electrochemical oxygen reduction reaction and have also gained noticeable interest for organic transformation. However, to date, no prior studies are available in the literature about the activity of N‐coordinated metal centers for photocatalytic H 2 evolution. Herein, a new photocatalyst containing g‐C 3 N 4 decorated with CoP nanodots constructed from low‐cost precursors is reported. It is for the first time revealed that the unique P(δ − )Co(δ + )N(δ − ) surface bonding states lead to much superior H 2 evolution activity (96.2 μmol h −1 ) compared to noble metal (Pt)‐decorated g‐C 3 N 4 photocatalyst (32.3 μmol h −1 ). The quantum efficiency of 12.4% at 420 nm is also much higher than the record values (≈2%) of other transition metal cocatalysts‐loaded g‐C 3 N 4 . It is believed that this work marks an important step toward developing high‐performance and low‐cost photocatalytic materials for H 2 evolution.


  • 주제어

    CoP .   g‐C3N4 .   dual molecular mechanism .   photocatalytic H2 evolution .   surface bonding state.  

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