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A solar-driven nanocellulose Janus aerogel with excellent floating stability and dual functions of oil-water separation and photocatalytic degradation of organic pollutants. | LitMetric

AI Article Synopsis

  • Researchers developed a solar-powered Janus aerogel (Janus-A) made from nanocellulose, designed to clean up oil spills in tough marine environments by separating oil from water and breaking down pollutants.
  • The Janus-A aerogel has a unique dual nature that allows it to float and efficiently absorb crude oil due to its special coating, which heats up quickly when exposed to sunlight, making the oil less viscous for better absorption.
  • Additionally, Janus-A’s combination of properties helps it remain stable in rough waters while effectively degrading organic pollutants in the surrounding water, making it a promising tool for environmental cleanup.

Article Abstract

Effective and practical cleanup of viscous crude oil spills is extremely important in real harsh marine environments. Herein, we designed a solar-driven, nanocellulose-based Janus aerogel (Janus-A) with excellent floating stability and dual function of oil-water separation and degradation of aqueous organic pollutants. Janus-A, with its amphiprotic nature, was prepared through polypyrrole (PPy) deposition, freeze-drying, octyltrichlorosilane (OTS) impregnation, TiO spraying on the bottom surface, and UV irradiation treatment. The photothermal conversion effect of PPy coating raised the surface temperature of aerogel to 75.8 °C within 6 min under one simulated solar irradiation, which greatly reduced the viscosity of the crude oil and increased the absorption capacity of the aerogel to 36.7 g/g. Benefiting from the balance between the buoyancy generated by the hydrophobic part and water absorption of the hydrophilic part, Janus-A showed excellent floating stability under simulated winds and waves. In addition, Janus-A exhibited high degradation efficiency for organic pollutants in water owing to the synergistic photocatalytic properties of TiO and PPy. These excellent performances make Janus-A ideal for integrated water-oil separation and water remediation.

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Source
http://dx.doi.org/10.1016/j.ijbiomac.2024.134698DOI Listing

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