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Preparing photocatalytic paper with improved catalytic activity by in situ loading poly-dopamine on cellulose fibre

  • Zhuozhuo Qin
  • Wenxia LiuEmail author
  • Huabin Chen
  • Jun Chen
  • Huili Wang
  • Zhaoping Song
Article
  • 47 Downloads

Abstract

Photocatalytic paper is a composite photocatalyst generally prepared by loading semiconductors, such as titanium dioxide (\(\text {TiO}_{2})\) nanoparticles on paper, and attracts sustaining interests. In this paper, poly-dopamine (PDA) was loaded on cellulose fibre by in situ oxidative polymerization of dopamine. The PDA-loaded cellulose fibre (PLCF) was used to make \(\text {TiO}_{2}\) photocatalytic paper together with pristine cellulose fibre (CF) and \(\text {TiO}_{2}\) nanoparticles to improve the performance of the photocatalytic paper. The loading of PDA on CF and the introduction of \(\text {TiO}_{2}\) nanoparticles in paper were verified by infrared spectroscopy and X-ray diffraction technique, respectively. As observed by scanning electron microscopy, the introduction of PLCF significantly improved the distribution of \(\text {TiO}_{2}\) nanoparticles in paper by forming a membranous substance. The photocatalytic performance of the as-prepared photocatalytic paper was analysed by decomposing methyl orange under UV light irradiation. It was confirmed that the occurrence of PLCF significantly improved the photocatalytic performance of the photocatalytic paper. The paper with the highest photocatalytic activity was prepared using a PLCF-to-CF mass ratio of 1:1. The photocatalytic paper with PLCF is stable in the process of repeated application. This work provided a new approach to prepare photocatalytic paper with improved photocatalytic activity.

Keywords

Photocatalytic paper poly-dopamine \(\text {TiO}_{2}\) nanoparticles photocatalysis antibacterial activity 

Notes

Acknowledgements

The project was funded by the National Natural Science Foundation of China (nos. 31270625 and 21506105).

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Copyright information

© Indian Academy of Sciences 2019

Authors and Affiliations

  • Zhuozhuo Qin
    • 1
  • Wenxia Liu
    • 1
    Email author
  • Huabin Chen
    • 1
  • Jun Chen
    • 1
  • Huili Wang
    • 1
  • Zhaoping Song
    • 1
  1. 1.Key Laboratory of Pulp and Paper Science and Technology (Ministry of Education)Qilu University of Technology (Shandong Academy of Science)JinanPeople’s Republic of China

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