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Optimizing the interface of C/titania@reduced graphene oxide nanofibers for improved photocatalytic activity

  • Yaxin Liu
  • Yongzheng Shi
  • Shiyi Zhang
  • Bin Liu
  • Xiuping Sun
  • Dongzhi YangEmail author
Chemical routes to materials
  • 10 Downloads

Abstract

Photocatalysis has been proved a promising technology to alleviate the deterioration of environments by utilizing light energy. High efficiency and cycling stability are important for pollutant degradation in practical wastewater treatment. Herein we prepared C/titania@reduced graphene oxide nanofibers (C/TiO2@RGO NFs) by electrospun polyacrylonitrile/titania nanofibers (PAN/TiO2 NFs) wrapped with graphene oxide (GO)assisted with polydopamine, followed by one-step GO reduction, TiO2 crystallization and interface enhancing between anatase TiO2 and graphene by forming chemical bonding via heat treatment. The as-prepared C/TiO2@RGO NFs exhibited four times photocatalytic efficiency higher than commercial catalyst P25, and they also exhibited favorable cycling stability for methylene blue degradation under visible light illumination. The high photocatalytic efficiency is mainly attributed to the efficient charge separation and broadening visible light absorption originating from the interface enhancing between TiO2 and RGO. This work provides an insight to design more efficient graphene-based semiconductor photocatalysts for pollutant decomposition.

Notes

Acknowledgements

The authors would like to thank the National Natural Science Foundation of China (51273015) for its financial support.

Supplementary material

10853_2019_3454_MOESM1_ESM.docx (4.1 mb)
Supplementary material 1 (DOCX 4227 kb)

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Copyright information

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

Authors and Affiliations

  1. 1.Beijing Key Laboratory of Advanced Functional Polymer CompositesBeijing University of Chemical TechnologyBeijingChina
  2. 2.Shandong Provincial Academy of Building ResearchJinanChina

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