Hemicellulose-g-PAAc/TiO2 Nanocomposite Hydrogel for Dye Removal

Authors

  • Yudan Li School of Chemistry and Chemical Engineering, Northwestern Polytechnical University, Xian 710072, China
  • Xiao-Feng Sun School of Chemistry and Chemical Engineering, Northwestern Polytechnical University, Xian 710072, China; Research & Development Institute of Northwestern Polytechnical University in Shenzhen, Shenzhen, 518063, China and Dongguan Sanhang Military Civilian Integration Innovation Research Institute, Dongguan, 523808, China https://orcid.org/0000-0002-7012-467X
  • Jiayi Chen School of Chemistry and Chemical Engineering, Northwestern Polytechnical University, Xian 710072, China and Dongguan Sanhang Military Civilian Integration Innovation Research Institute, Dongguan, 523808, China
  • Le Sun School of Chemistry and Chemical Engineering, Northwestern Polytechnical University, Xian 710072, China

DOI:

https://doi.org/10.6000/1929-5995.2023.12.05

Keywords:

Hemicellulose, nanocomposite hydrogel, adsorption, photocatalytic degradation

Abstract

Dyes pollution on urban environment is of great concern because of the human health hazards associated with this kind of contaminants, and the use of low-cost photocatalytic composite material is an efficient treatment method to minimize the environmental impact. A novel hemicellulose-g-PAAc/TiO2 composite hydrogel was prepared as a promising alternative material for dye removal. Wheat straw hemicellulose and TiO2 nanoparticles were first modified and then incorporated into hydrogel via covalent bonds. Effects of gel dosage, pH, initial concentration and contact time on the adsorption amount of methylene blue were systematically studied using the prepared hydrogel. The equilibrium adsorption data was fitted well to the Freundlich isotherm model, and Langmuir isotherm analysis indicated that the adsorption capacity of the hemicellulose-g-PAAc/TiO2 composite hydrogel was 389.1 mg/g, and adsorption kinetic study showed that the adsorption process can be described by the pseudo second-order kinetic model. The prepared composite hydrogel exhibited high photodegradation ability for methylene blue under alkaline conditions, and all results indicated that the hemicellulose-g-PAAc/TiO2 composite hydrogel had excellent photocatalytic degradability for dyes, which can be used in practical process.

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Published

2023-07-05

How to Cite

Li, Y. ., Sun, X.-F. ., Chen, J. ., & Sun, L. . (2023). Hemicellulose-g-PAAc/TiO2 Nanocomposite Hydrogel for Dye Removal. Journal of Research Updates in Polymer Science, 12, 37–46. https://doi.org/10.6000/1929-5995.2023.12.05

Issue

Vol. 12 (2023)

Section

Articles

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