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Published on: July 4, 2017
Construction of β-FeOOH@tunicate cellulose nanocomposite hydrogels and their highly efficient photocatalytic
Junmei Wang1, Xingxing Li1, Qiaoyun Cheng1
1College of Chemistry and Molecular Sciences, Wuhan University, Wuhan, 430072, China; Hubei Engineering Center of Natural Polymers-Based Medical Materials, Wuhan, 430072, China.
Abstract:
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 °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 β-FeOOH nanoparticles (NPs) were in-situ synthesized to obtain β-FeOOH/cellulose composite hydrogels (TCH-Fe). The tunicate cellulose hydrogels (TCH) not only disperse uniformly and immobilize firmly the β-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 ∼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.
