Immobilization of TiO2 Nanoparticles in Hydrogels Based on Poly(methyl acrylate) and Succinamide Acid for the Photodegradation of Organic Dyes

Hydrogels have excellent properties that make them ideally suited as host matrices for the immobilization of photoreactive materials such as TiO2 nanoparticles that serve as catalysts in the photodegradation of organic dyes, which is of great importance in practical water pollution treatment applica...

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Bibliographic Details
Published in:Catalysts 2021-05, Vol.11 (5), p.613
Main Authors: You, Xiaomeng, Huang, Hailong, Zhang, Ran, Yang, Zhongli, Xu, Min, Wang, Xuelu, Yao, Yefeng
Format: Article
Language:English
Subjects:
Carbon
Catalysts
Chemical reactions
degradation
Dyes
Experiments
hydrogel
Hydrogels
Immobilization
Laboratories
Nanoparticles
Performance degradation
Photocatalysis
photocatalyst
Photocatalysts
photocatalytic reaction
Photodegradation
Pollutants
Polymethyl acrylates
Polyvinyl alcohol
Regeneration
Titanium dioxide
Water pollution
Water treatment
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Summary:Hydrogels have excellent properties that make them ideally suited as host matrices for the immobilization of photoreactive materials such as TiO2 nanoparticles that serve as catalysts in the photodegradation of organic dyes, which is of great importance in practical water pollution treatment applications. However, the application of hydrogels for this purpose remains poorly studied. The present study addresses this issue by developing two types of hydrogels based on poly(methyl acrylate) and succinamide acid with embedded TiO2 nanoparticles for use as photocatalysts in the photodegradation of organic dyes. The results of the analysis demonstrate that the TiO2 nanoparticles are distributed uniformly in the hydrogel matrices, and the hydrogels maintain their original structures after use. The photodegradation efficiencies of the developed TiO2-hydrogels are demonstrated to be reasonably close to that of freely distributed TiO2 nanoparticles in solution for four different organic dyes. In addition, the results of degradation-regeneration cycling tests demonstrate that immobilizing the TiO2 nanoparticles into the hydrogels greatly reduces their loss during utilization, and the photocatalysts can be easily reused. In fact, the two TiO2-hydrogels retain reasonably high photocatalytic degradation performance after four degradation-regeneration cycles.
ISSN:2073-4344
2073-4344
DOI:10.3390/catal11050613