4.7 Article

Construction of β-FeOOH@tunicate cellulose nanocomposite hydrogels and their highly efficient photocatalytic properties

Journal

CARBOHYDRATE POLYMERS
Volume 229, Issue -, Pages -

Publisher

ELSEVIER SCI LTD
DOI: 10.1016/j.carbpol.2019.115470

Keywords

Tunicate cellulose; beta-FeOOH nanoparticles; Nanocomposite hydrogels; Photocatalysis; Continuous flow system

Funding

  1. Major Program of National Natural Science Foundation of China [21334005]
  2. Major International (Regional) Joint Research Project [21620102004]
  3. Funds for International Cooperation and Exchange of the National Natural Science Foundation of China [21811530006]
  4. National Natural Science Foundation of China [51873164]

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The environmentally friendly materials fabricated from renewable marine resources have aroused worldwide concerns. Here, for the first time, tunicate cellulose was dissolved in LiOH/urea aqueous solution at -12 degrees C after ball-milling, and its molecular weight was determined with laser light scattering. Hydrogels were fabricated from the cellulose solution by regenerating in ethanol, and beta-FeOOH nanoparticles (NPs) were in-situ synthesized to obtain beta-FeOOH/cellulose composite hydrogels (TCH-Fe). The tunicate cellulose hydrogels (TCH) not only disperse uniformly and immobilize firmly the beta-FeOOH NPs, but also acted as structural materials for continuous flow photocatalytic system. The photocatalytic degradation of methylene blue (MB) over TCH-Fe achieved up to 99.89% in 30 min under visible-light irradiation, and maintained as high as similar to 98% after treatment for 8 h, indicating a highly efficient photodegradation of MB. We provided a low-cost and facile method to construct new sustainable materials derived from marine biomass with highly efficient photocatalytic properties.

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