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The photocatalytic performance of modified ZnIn2S4 with graphene and La for hydrogen generation under visible light

Author

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  • Zhu, Rongshu
  • Tian, Fei
  • Che, Sainan
  • Cao, Gang
  • Ouyang, Feng

Abstract

A series of RGO/La-ZnIn2S4 photocatalysts were successfully synthesized using the hydrothermal method with different amount of RGO (0 wt%, 0.1 wt%, 0.5 wt%, 1.0 wt%, 2.0 wt%, 5.0 wt%) and La (0 wt%, 0.1 wt%, 0.5 wt%, 1.0 wt%, 2.0 wt%, 5.0 wt%) and characterized by various analysis techniques, such as XRD, Raman, SEM, UV–Vis, TEM, BET and PL. The photocatalytic H2 evolution activities have also been evaluated under visible-light irradiation. The H2 production activity of RGO/La-ZnIn2S4 was influenced by both La and RGO significantly. The activity reached the best when the amounts of La and RGO were both 1.0 wt%. The hydrogen production rate of 1.0Pt/1.0RGO/1.0La-ZnIn2S4 was 2255 μmol g−1 h−1 and the apparent quantum yield and the energy conversion efficiency were 29.45% and 18.79% at 420 nm respectively. The activity was related to the BET surface area, the pore microstructure and the synergistic effect of RGO and La. On the basis of the characterization of the catalysts, the synergistic effect of RGO and La on the photocatalytic activity of RGO/La-ZnIn2S4 was discussed in detail.

Suggested Citation

  • Zhu, Rongshu & Tian, Fei & Che, Sainan & Cao, Gang & Ouyang, Feng, 2017. "The photocatalytic performance of modified ZnIn2S4 with graphene and La for hydrogen generation under visible light," Renewable Energy, Elsevier, vol. 113(C), pages 1503-1514.
    • Handle: RePEc:eee:renene:v:113:y:2017:i:c:p:1503-1514
    DOI: 10.1016/j.renene.2017.06.042
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    References listed on IDEAS

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    1. Landong Li & Junqing Yan & Tuo Wang & Zhi-Jian Zhao & Jian Zhang & Jinlong Gong & Naijia Guan, 2015. "Sub-10 nm rutile titanium dioxide nanoparticles for efficient visible-light-driven photocatalytic hydrogen production," Nature Communications, Nature, vol. 6(1), pages 1-10, May.
    2. Maochang Liu & Dengwei Jing & Zhaohui Zhou & Liejin Guo, 2013. "Twin-induced one-dimensional homojunctions yield high quantum efficiency for solar hydrogen generation," Nature Communications, Nature, vol. 4(1), pages 1-8, October.
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    Cited by:

    1. Zhu, Rongshu & Tian, Fei & Yang, Ruijie & He, Jiansheng & Zhong, Jian & Chen, Baiyang, 2019. "Z scheme system ZnIn2S4/RGO/BiVO4 for hydrogen generation from water splitting and simultaneous degradation of organic pollutants under visible light," Renewable Energy, Elsevier, vol. 139(C), pages 22-27.

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