Journal
CELLULOSE
Volume 27, Issue 9, Pages 5241-5253Publisher
SPRINGER
DOI: 10.1007/s10570-020-03139-0
Keywords
BiVO4; Self-assembly; Photocatalytic cotton fabric; Ppy; Mwcnts
Funding
- Fundamental Research Funds for the Central Universities [2232020G-01]
- Guangxi Innovation Drive Development Fund [AA17204076]
- Zhejiang Province Public Welfare Technology Application Research Project (CN) [LGG18E030002]
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The treatment of wastewater generated by textile industry has attracted researchers' attentions, and photocatalysis is considered as a good strategy to solve this problem because of the strong redox capacity. Herein, a novel visible light-responsive cotton-PPy-MWCNTs-BiVO4 photocatalytic material with the hierarchical structure was successfully prepared by a simple layer assembly method. The composite material has excellent degradation performance for reactive brilliant blue (RB-19) dye solution, and the degradation efficiency can reach 97.8% under visible light irradiation for 2 h. The performance improvement is mainly ascribed to the interaction between polypyrrole (PPy) and multi-walled carbon nanotubes (MWCNTs) in the system, where PPy can efficiently transfer holes and MWCNTs can separate electrons, thereby greatly speeding up the separation of photogenerated carriers. The loading of BiVO4, PPy and MWCNTs on cotton fabrics exhibits better stability and recyclability than traditional powdery photocatalysts. In sum, this paper provides a feasible idea for the application of flexible cellulose-based photocatalytic materials.
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