Skip to main content
Log in

A chitosan/dopamine-TiO2 composite nanofiltration membrane for antifouling in water purification

  • Original Research
  • Published:
Cellulose Aims and scope Submit manuscript

Abstract

A major obstacle for the development of the cellulose-based nanofiltration membrane is its fouling. In this study, a novel cellulose-based composite nanofiltration membrane (CS/DA-TiO2-NFM) with excellent anti-fouling performance was prepared through casting of both chitosan (CS) and TiO2 modified by dopamine (DA-TiO2) on the cellulose substrate membrane. DA-TiO2 was successfully introduced into the surface of membrane, resulting in significant improvement in its hydrophilicity due to the formation of dense CS layers. Furthermore, both CS and DA-TiO2 were effective antimicrobial agents (against E. coli 90.6% and S. aureus 95.1%) that could minimize the accumulation of bacteria on the CS/DA-TiO2-NFM. For the antifouling test against BSA, the irreversible recovery ratio of the CS/DA-TiO2-NFM was only 23.25% of the control (no CS/DA-TiO2 modified NFM). In addition, the CS/DA-TiO2-NFM exhibited an increased rejection rate of MgSO4 (enhanced 40.93%) and water-flux (enhanced 18.10%) compared with the control. These results highlight the potential of the presented approach for designing membranes with effective separation performance and antifouling for drinking water treatment.

Graphic abstract

This is a preview of subscription content, log in via an institution to check access.

Access this article

Price excludes VAT (USA)
Tax calculation will be finalised during checkout.

Instant access to the full article PDF.

Fig. 1
Fig. 2
Fig. 3
Fig. 4
Fig. 5
Fig. 6
Fig. 7
Fig. 8

Similar content being viewed by others

References

Download references

Acknowledgments

The authors are grateful for the financial support from National Natural Science Foundation of China (31971612), the Science and Technology Innovation Development Fund of Fujian Agriculture and Forestry University (CXZX2018003), the Fujian Natural Science Foundation (2017J01570 and 2019J05044).

Author information

Authors and Affiliations

Authors

Contributions

DW: Visualization, Investigation, Data curation, Writing-original draft Preparation; JC and JH: Scheme conception, Investigation, Validation; HZ: Investigation, Validation. SL and LC: Formal analysis, Validation; YN and LH: Conceptualization, Validation, Writing-reviewing, and Editing.

Corresponding authors

Correspondence to Yonghao Ni or Liulian Huang.

Ethics declarations

Conflict of interest

The authors declare that they have no known competing financial interests or personal relationships that could have appeared to influence the work reported in this paper.

Additional information

Publisher's Note

Springer Nature remains neutral with regard to jurisdictional claims in published maps and institutional affiliations.

Supplementary Information

Below is the link to the electronic supplementary material.

Supplementary file1 (DOCX 4790 kb)

Rights and permissions

Reprints and permissions

About this article

Check for updates. Verify currency and authenticity via CrossMark

Cite this article

Wang, D., Lin, J., Huang, J. et al. A chitosan/dopamine-TiO2 composite nanofiltration membrane for antifouling in water purification. Cellulose 28, 4959–4973 (2021). https://doi.org/10.1007/s10570-021-03845-3

Download citation

  • Received:

  • Accepted:

  • Published:

  • Issue Date:

  • DOI: https://doi.org/10.1007/s10570-021-03845-3

Keywords

Navigation