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Improved interfacial charge transfer and visible light activity of reduced graphene oxide-graphitic carbon nitride photocatalysts

机译：改善了石墨烯氧化物 - 石墨氮化催化剂的界面电荷转移和可见光活性

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摘要

Development of efficient visible light-driven photocatalysts is an important approach towards sustainability. Herein, reduced graphene oxide-graphitic carbon nitride (rGO-gCN) photocatalysts were successfully prepared by in situ photocatalytic reduction of graphene oxide (GO) in the presence of gCN as the photocatalyst. The XPS spectra revealed the presence of N-graphene, which confirmed the interaction between the rGO and the gCN. The rGO-gCN with GO loading amount of 0.1 wt% exhibited almost three times higher photocatalytic activity than gCN for degradation of phenol under visible light irradiation. Fluorescence spectroscopy, EIS, and photocurrent response studies indicated that the presence of rGO significantly promoted the electron-hole separation and improved the interfacial charge transfer on the gCN. These factors played a crucial role in enhancing the photocatalytic activity of the gCN under visible light irradiation.
机译：高效可见光触控光催化剂的发展是可持续性的重要方法。 在此，通过在GCN存在下，通过原位光催化在GCN作为光催化剂存在下，成功制备了石墨烯氧化物 - 石墨氮化物（RGO-GCN）光催化剂。 XPS光谱揭示了N-石墨烯的存在，其证实了RGO与GCN之间的相互作用。 具有0.1wt％的rgo-GCN为0.1wt％的光催化活性比GCN呈现出较高的三倍，用于在可见光照射下降解苯酚。 荧光光谱，EIS和光电流响应研究表明，RGO的存在显着促进了电子孔分离并改善了GCN上的界面电荷转移。 这些因素在可见光照射下提高GCN的光催化活性起着至关重要的作用。

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  • 来源
    《RSC Advances》 |2015年第114期|共11页
  • 作者

    Peggy Tiong; Hendrik O. Lintang; Salasiah Endud;

  • 作者单位

    Department of Chemistry Faculty of Science Universiti Teknologi Malaysia 81310 UTM Johor Bahru Malaysia;

    Centre for Sustainable Nanomaterials Ibnu Sina Institute for Scientific and Industrial Research Universiti Teknologi Malaysia 81310 UTM Johor Bahru Malaysia.;

    Department of Chemistry Faculty of Science Universiti Teknologi Malaysia 81310 UTM Johor Bahru Malaysia;

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  • 正文语种 eng
  • 中图分类 化学;
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