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Journal of colloid and interface science v.512, 2018년, pp.474 - 479   SCI SCIE
본 등재정보는 저널의 등재정보를 참고하여 보여주는 베타서비스로 정확한 논문의 등재여부는 등재기관에 확인하시기 바랍니다.

Enhanced photocatalytic activity of mesoporous carbon/C3N4 composite photocatalysts

Ding, Ning (Key Laboratory for Renewable Energy, Beijing Key Laboratory for New Energy Materials and Devices, Beijing National Laboratory for Condensed Matter Physics, Institute of Physics, Chinese Academy of Sciences, Beijing 100190, China ) ; Zhang, Longshuai (Key Laboratory for Renewable Energy, Beijing Key Laboratory for New Energy Materials and Devices, Beijing National Laboratory for Condensed Matter Physics, Institute of Physics, Chinese Academy of Sciences, Beijing 100190, China ) ; Hashimoto, Muneaki (Photocatalysis International Research Center, Research Institute for Science and Technology, Tokyo University of Science, 2641 Yamazaki, Noda, Chiba, 278-0022, Japan ) ; Iwasaki, Kodai (Photocatalysis International Research Center, Research Institute for Science and Technology, Tokyo University of Science, 2641 Yamazaki, Noda, Chiba, 278-0022, Japan ) ; Chikamori, Noriyasu (Photocatalysis International Research Center, Research Institute for Science and Technology, Tokyo University of Science, 2641 Yamazaki, Noda, Chiba, 278-0022, Japan ) ; Nakata, Kazuya (Photocatalysis International Resea ) ; Xu, Yuzhuan ; Shi, Jiangjian ; Wu, Huijue ; Luo, Yanhong ; Li, Dongmei ; Fujishima, Akira ; Meng, Qingbo ;
  • 초록  

    Abstract Hypothesis The C 3 N 4 as a cheap and clean photocatalyst shows suitable band gap to splitting water and spectral response. However the poor conductivity of C 3 N 4 limits the photocatalytic hydrogen evolution rate. The combination of C 3 N 4 and high conductivity materials will enhance the separation of photo-generated carriers and thus enhance the photocatalytic activity. As many carbon materials have been tried, the mesoporous carbon should be a good candidate to solve this problem. Experiments A photocatalytic system with C 3 N 4 and mesoporous carbon has been designed to test the photocatalytic performance of both the photocatalytic hydrogen evolution and the photocatalytic degradation of methylene blue. The results of EPR, EIS and PL spectra were given to further understand the photo-generated carrier and its transfer. Findings The enhancement of the highest hydrogen evolution rate is 48% from 69 to 102 μmol/h by mesoporous carbon/C 3 N 4 sample. The existence of small amount of mesoporous carbon can facilitate the photogenerated carrier separation, thus enhancing the photocatalytic performance. In the meantime, the introduction of mesoporous carbon into C 3 N 4 is beneficial for improving electron delocalization and conduction electrons and increasing the optical absorption. Graphical abstract [DISPLAY OMISSION]


  • 주제어

    Water splitting .   Hydrogen evolution .   Photocatalytic degradation .   Carbon nitride .   Graphitic carbon nitride.  

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