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Mo2C/ZnIn2S4复合材料的制备及其光催化产氢性能研究

刘超 谢潇琪 范鹏凯 李艳

刘超, 谢潇琪, 范鹏凯, 李艳. Mo2C/ZnIn2S4复合材料的制备及其光催化产氢性能研究[J]. 燃料化学学报. doi: 10.19906/j.cnki.JFCT.2022021
引用本文: 刘超, 谢潇琪, 范鹏凯, 李艳. Mo2C/ZnIn2S4复合材料的制备及其光催化产氢性能研究[J]. 燃料化学学报. doi: 10.19906/j.cnki.JFCT.2022021
LIU Chao, XIE Xiao-qi, FAN Peng-kai, LI Yan. Synthesis of Mo2C/ZnIn2S4 composite and its efficient photocatalytic hydrogen evolution activity[J]. Journal of Fuel Chemistry and Technology. doi: 10.19906/j.cnki.JFCT.2022021
Citation: LIU Chao, XIE Xiao-qi, FAN Peng-kai, LI Yan. Synthesis of Mo2C/ZnIn2S4 composite and its efficient photocatalytic hydrogen evolution activity[J]. Journal of Fuel Chemistry and Technology. doi: 10.19906/j.cnki.JFCT.2022021

Mo2C/ZnIn2S4复合材料的制备及其光催化产氢性能研究

doi: 10.19906/j.cnki.JFCT.2022021
基金项目: 河北省自然科学基金(B2016403011,B2020208009)和河北省高等学校科学技术研究重点项目(ZD2017012)资助
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    Tel: 13931157532,E-mail: yikeschao@126.com

  • 中图分类号: O644.1;O643.36

Synthesis of Mo2C/ZnIn2S4 composite and its efficient photocatalytic hydrogen evolution activity

Funds: The project was supported by Natural Science Foundation of Hebei Province (B2016403011, B2020208009) and Natural Science Research Major Project in University of Hebei Province (ZD2017012).
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  • 摘要: 以钼酸铵和二氰二胺为原料,通过高温固相法制备了Mo2C。以合成的Mo2C为原料,通过原位法合成了Mo2C/ZnIn2S4复合光催化材料。利用X射线衍射(XRD)、X射线光电子能谱(XPS)、扫描电镜(SEM)、紫外可见漫反射(UV-vis)、开尔文探针(KP)等对材料的组成、结构和性能进行了表征。结果表明, ZnIn2S4在Mo2C颗粒表面原位生长并形成异质结。Mo2C/ZnIn2S4复合材料析氢速率可达到1.33 mmol/(g·h),是纯ZnIn2S4析氢速率的5.1倍。光催化机理分析认为,Mo2C作为助催化剂具有类金属特性,较高的导电性能和高的表面功函,与ZnIn2S4形成Mo2C/ZnIn2S4异质界面后,可以有效促进ZnIn2S4光生电荷的分离和迁移。同时,由于Mo2C较低的析氢过电位使其成为析氢反应的活性位点,有效降低了ZnIn2S4在析氢反应中的过电势,进而提高材料的光催化析氢性能。
  • 图  1  Mo2C,ZnIn2S4和MC/ZIS的XRD谱图

    Figure  1  XRD patterns of Mo2C, ZnIn2S4 and MC/ZIS composites.

    图  2  Mo2C、ZIS和10%MC/ZIS的SEM照片

    Figure  2  SEM images of Mo2C (a), ZIS (b) and 10%MC/ZIS (c)

    图  3  (a)紫外可见漫反射吸收光谱;(b) ZnIn2S4的Kubelka-Munk函数变换光谱;(c) ZnIn2S4的价带谱;(d) Mo2C的价带谱

    Figure  3  Ultraviolet visible diffuse reflectance absorption spectrum (a), Kubelka-Munk function transform spectrum of ZnIn2S4 (b) and Valence band spectrum of ZnIn2S4 (c) and Mo2C (d)

    图  4  样品XPS能谱图

    Figure  4  XPS spectra of survey (a), Mo 3d (b), C 1s (c) for Mo2C and Mo2C/ZnIn2S4, Zn 2p (d) and In 3d (e), In 3d and S 2p (f) for ZnIn2S4和Mo2C/ZnIn2S4

    图  5  (a) ZIS和MC/ZIS的瞬态光电流响应谱图;(b) EIS谱图;(c) PL谱图;(d) LSV曲线

    Figure  5  Transient photocurrent response spectra (a), EIS specta (b) , PL spectra (c) and LSV curves (d) of ZIS and MC/ZIS

    图  6  (a) 不同Mo2C负载量MC/ZIS产氢速率,(b) 10%MC/ZIS的光催化产氢循环实验

    Figure  6  MC/ZIS hydrogen production diagram (a) with different loading of Mo2C and 10% MC/ZIS photocatalytic hydrogen production cycle experiment diagram (b)

    图  7  ZIS和MC的功函谱图

    Figure  7  Work function maps of ZIS and MC

    图  8  Mo2C/ZnIn2S4 复合光催化剂的光催化析氢机制

    Figure  8  Photocatalytic hydrogen evolution mechanism of Mo2C/ZnIn2S4 composite photocatalyst

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  • 收稿日期:  2022-02-14
  • 录用日期:  2022-03-25
  • 修回日期:  2022-03-22
  • 网络出版日期:  2022-04-06

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