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Journal of Inorganic Materials, Volume. 40, Issue 5, 552(2025)

Na and O Co-doped Carbon Nitride for Efficient Photocatalytic Hydrogen Evolution

Libo CHEN1, Ying SHENG1, Ming WU1、*, Jiling SONG2, Jian JIAN1, and Erhong SONG3、*
Author Affiliations
  • 11. School of Chemistry and Chemical Engineering, Hunan University of Science and Technology, Xiangtan 411201, China
  • 22. National Engineering Research Center for Compounding and Modification of Polymer Materials, Guiyang 550014, China
  • 33. Shanghai Institute of Ceramics, Chinese Academy of Sciences, Shanghai 200050, China
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    AbstractGet PDF(in Chinese)
    Figures&Tables (12)
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    Figures & Tables(12)
    Synthetic schematic of Na/O-CNx and Na/O-CN3.0-yO2 samples
    1. Synthetic schematic of Na/O-CNx and Na/O-CN3.0-yO2 samples

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    Structure analyses of samples(a, b) XRD patterns of (a) pure CN and Na/O-CNx, and (b) Na/O-CN3.0-yO2; (c) FT-IR spectra of pure CN, Na/O-CN3.0 and Na/O-CN3.0-40%O2
    2. Structure analyses of samples(a, b) XRD patterns of (a) pure CN and Na/O-CNx, and (b) Na/O-CN3.0-yO2; (c) FT-IR spectra of pure CN, Na/O-CN3.0 and Na/O-CN3.0-40%O2

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    Morphologies of samples(a, b) SEM images of (a) pure CN and (b) Na/O-CN3.0; (c) TEM and (d) HRTEM images of Na/O-CN3.0
    3. Morphologies of samples(a, b) SEM images of (a) pure CN and (b) Na/O-CN3.0; (c) TEM and (d) HRTEM images of Na/O-CN3.0

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    High-resolution XPS spectra of pure CN, Na/O-CN3.0 and Na/O-CN3.0-40%O2 samples(a) C1s; (b) N1s; (c) O1s; (d) Na1s
    4. High-resolution XPS spectra of pure CN, Na/O-CN3.0 and Na/O-CN3.0-40%O2 samples(a) C1s; (b) N1s; (c) O1s; (d) Na1s

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    Band structure analysis of pure CN and Na/O-CN3.0(a) UV-Vis DRS spectra; (b) Related Tauc plots; (c) VB XPS spectra; (d) Band structure diagram
    5. Band structure analysis of pure CN and Na/O-CN3.0(a) UV-Vis DRS spectra; (b) Related Tauc plots; (c) VB XPS spectra; (d) Band structure diagram

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    Photocurrent and PL spectra analysis of pure CN and Na/O-CN3.0 samples(a) Photocurrent test; (b) EIS plots; (c) PL spectra; (d) Time-resolved PL spectra
    6. Photocurrent and PL spectra analysis of pure CN and Na/O-CN3.0 samples(a) Photocurrent test; (b) EIS plots; (c) PL spectra; (d) Time-resolved PL spectra

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    Photocatalytic hydrogen activity(a, b) Photocatalytic hydrogen evolution of (a) pure CN and Na/O-CNx, and (b) Na/O-CN3.0-yO2; (c) PHER of pure CN, Na/O-CN3.0 and Na/O-CN3.0-40%O2; (d) Cycling performance of Na/O-CN3.0
    7. Photocatalytic hydrogen activity(a, b) Photocatalytic hydrogen evolution of (a) pure CN and Na/O-CNx, and (b) Na/O-CN3.0-yO2; (c) PHER of pure CN, Na/O-CN3.0 and Na/O-CN3.0-40%O2; (d) Cycling performance of Na/O-CN3.0

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    Photocatalytic hydrogen evolution mechanism of Na/O-CN3.0 under visible light irradiation
    8. Photocatalytic hydrogen evolution mechanism of Na/O-CN3.0 under visible light irradiation

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    Nitrogen adsorption-desorption isotherms and corresponding pore diameter distribution curves of pure CN and Na/O-CN3.0
    S1. Nitrogen adsorption-desorption isotherms and corresponding pore diameter distribution curves of pure CN and Na/O-CN3.0

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    XPS survey spectra of pure CN, Na/O-CN3.0 and Na/O-CN3.0-40%O2
    S2. XPS survey spectra of pure CN, Na/O-CN3.0 and Na/O-CN3.0-40%O2

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    ESR spectra of pure CN, Na/O-CN3.0 and Na/O-CN3.0-40%O2 samples
    S3. ESR spectra of pure CN, Na/O-CN3.0 and Na/O-CN3.0-40%O2 samples

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    • Table 1.

      Photocatalytic hydrogen evolution performance under visible light irradiation (> 420 nm) and surface area of alkali metal doped carbon nitride[S1-S12]

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      Table 1.

      Photocatalytic hydrogen evolution performance under visible light irradiation (> 420 nm) and surface area of alkali metal doped carbon nitride[S1-S12]

      CatalystSynthesis temperature/℃Catalyst weight/mgSacrificial reagent/%(in volume) Surface area/(m2·g-1) Activity compared with CN (times)Ref.
      Na/O-CN3.018050TEOA 10%18.89.2This work
      3% NaCl-CN55010TEOA 17%76.84.3[S1]
      KCN-1055050TEOA 10%115.6[S2]
      K(0.05)-CN55050TEOA 17%11.15[S3]
      LiNa-K-CN252050TEOA 10%116.215[S4]
      Na(30)-MCN550100TEOA 10%56.112.9[S5]
      Na0.1-CNNTs65020TEOA 10%9411[S6]
      CN-Na-755050TEOA 10%11.79.9[S7]
      CN-10052050TEOA 10%14.99.2[S8]
      (Na,O)g-C3N416050ethyl alcohol 40%-7[S9]
      CN0.0555020TEOA46.71.9[S10]
      GCN-Na-555050TEOA10.31.5[S11]
      K@C3N4600100TEOA27.58[S12]
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    Libo CHEN, Ying SHENG, Ming WU, Jiling SONG, Jian JIAN, Erhong SONG. Na and O Co-doped Carbon Nitride for Efficient Photocatalytic Hydrogen Evolution[J]. Journal of Inorganic Materials, 2025, 40(5): 552

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    Paper Information

    Category:

    Received: Jul. 20, 2024

    Accepted: --

    Published Online: Sep. 2, 2025

    The Author Email: Ming WU (wuming10@mails.jlu.edu.cn), Erhong SONG (ehsong@mail.sic.ac.cn)

    DOI:10.15541/jim20240345

    Topics

    laser devices and laser physics
    Lasers and Laser Optics
    Laser physics
    laser manufacturing
    Instrumentation, Measurement and Metrology