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Synthesis of AgI/2D-La2Ti2O7 hybrids as a visible light photocatalyst for degradation of rhodamine B

  • Yan-Mei Feng
  • Xiang-Feng WuEmail author
  • Zhi-Qiang Wang
  • Yun-Feng YangEmail author
  • Jun-Zhang Su
  • Jia-Rui Zhang
  • Yun-Ning Jia
  • Mi Zhang
  • Xiu-Guo Sun
Article
  • 18 Downloads

Abstract

The AgI/2D-La2Ti2O7 hybrids were obtained via a facile method at room temperature. Rhodamine B, as an organic dye, was used to determine the photocatalytic activity of the samples. The photocatalytic degradation mechanism was also analyzed. Experimental results display that AgI can broaden the light absorption of La2Ti2O7 under the visible light irradiation. The photocatalytic degradation efficiency of the as-synthesized hybrids appears the tendency of first increasing and then decreasing with increasing the usage of La2Ti2O7. When the usage of La2Ti2O7 is 10%, within 60 min, the as-synthesized hybrids possess the maximum of 93.1%. This is higher than 2.1% of La2Ti2O7 and 80.9% of AgI. Moreover, the improved photocatalytic activity can be attributed to AgI particles conjugating with 2D-La2Ti2O7 nanosheets via chemical-bonds, which can enhance the separation and transformation of the photo-generated holes and electrons. In addition, the dominating role is superoxide radicals during the photocatalytic process.

Notes

Acknowledgements

This work was supported by the Natural Science Foundation of Hebei Province, China (B2016210111).

Compliance with ethical standards

Conflict of interest

The authors state that they have no conflict of interest.

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© Springer Science+Business Media, LLC, part of Springer Nature 2019

Authors and Affiliations

  1. 1.School of Materials Science and Engineering, Hebei Provincial Key Laboratory of Traffic Engineering MaterialsShijiazhuang Tiedao UniversityShijiazhuangChina
  2. 2.School of ScienceNorth University of ChinaTaiyuanChina
  3. 3.School of Materials Science and EngineeringNorth University of ChinaTaiyuanChina

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