Citation: Yuanpu Wang, Liang Liu, DongJun Wu, Jing Guo, Jianying Shi, Junmin Liu, Chengyong Su. Immobilization of metal-organic molecular cage on g-C₃N₄ semiconductor for enhancement of photocatalytic H₂ generation[J]. Chinese Journal of Catalysis, ;2019, 40(8): 1198-1204. doi: S1872-2067(19)63387-5 shu

Immobilization of metal-organic molecular cage on g-C₃N₄ semiconductor for enhancement of photocatalytic H₂ generation

Yuanpu Wang ^a, ,
Liang Liu ^a ,
DongJun Wu ^a ,
Jing Guo ^a ,
Jianying Shi ^a ,
Junmin Liu ^a ,
Chengyong Su ^a,b

a MOE Laboratory of Bioinorganic and Synthetic Chemistry, Lehn Institute of Functional Materials, School of Chemistry, and School of Materials Science and Engineering, Sun Yat-sen University, Guangzhou 510275, Guangdong, China;
b State Key Laboratory of Organometallic Chemistry, Shanghai Institute of Organic Chemistry, Chinese Academy of Sciences, Shanghai 200032, China

Received Date: 1 March 2019
Revised Date: 26 April 2019

Fund Project: This work was supported by the National Natural Science Foundation of China (21875293, 21821003, 21890380, 21720102007, 21572280), the Natural Science Foundation of Guangdong Province (2016A030313268), the STP Project of Guangzhou (201804010386, 201707010114), the Fundamental Research Funds for the Central Universities (17lgzd18, 17lgzd01), and the Research Fund Program of Key Laboratory of Fuel Cell Technology of Guangdong Province.

A new compound based on immobilizing of Pd₆(RuL₃)₈(BF₄)₂₈ (L=2-(pyridin-3-yl)-1H-imidazo[4,5-f] [1,10]-phenanthroline) cage (MOC-16) on g-C₃N₄ was synthesized. Infrared spectrum and powder X-ray diffraction were used to characterize structure of hybrid MOC-16/g-C₃N₄, as well as UV-vis absorption spectrum and X-ray photoelectron spectroscopy were carried out to unveil photocatalytic mechanism. With the introduction of MOC-16, the absorption edge of MOC-16/g-C₃N₄ in UV-vis spectrum extended apparently to long-wavelength region compared with pristine g-C₃N₄. H₂ evolution yielded with MOC-16/g-C₃N₄ in aqueous solution containing TEOA was much higher than that with RuL₃/g-C₃N₄, Pd/RuL₃/g-C₃N₄ and mixture of MOC-16 and g-C₃N₄, showing that the octahedral cage structure with high-efficient electron transfer and the interface interaction between MOC-16 and g-C₃N₄ were significant for improvement of H₂ evolution.
- g-C₃N₄,
- Metal-organic cage,
- Photocatalytic H₂ evolution,
- Visible light,
- Stability
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Immobilization of metal-organic molecular cage on g-C₃N₄ semiconductor for enhancement of photocatalytic H₂ generation