期刊
SURFACE & COATINGS TECHNOLOGY
卷 388, 期 -, 页码 -出版社
ELSEVIER SCIENCE SA
DOI: 10.1016/j.surfcoat.2020.125551
关键词
TiO2/RGO/Alginate composite aerogels; Underwater superoleophobicity; Oil/water separation; Light-driven renewability; Environmental friendly; Long-term stability
资金
- Program for New Century Excellent Talents in Fujian Province University (NCETFJ)
- Natural Science Foundation of Fujian Province [2016J01207]
- Youth Education and Scientific of Fujian Province [JAT170154]
- Outstanding Youth Fund of Fujian Agriculture and Forestry University [XJQ201419, CXZX2017292]
To valorize the naturally abundant biomass, bio-composites made of biomass and functional nano-materials have attracted a great deal of attention. By incorporating alginate with TiO2/RGO nanocomposites, TiO2/RGO/Alginate composite (TRGA) aerogels are fabricated via a facile freeze-drying method. TiO2/RGO nanocomposites can effectively improve the surface roughness and mechanical performance of alginate-based matrix, and provide the aerogels with light-driven self-cleaning ability. Without further chemical modification, the as-fabricated TRGA aerogel shows: i) collective underwater superoleophobicity (theta(oil) > 150 degrees for various oils), ii) effective oil/ water separation performance (9.76 L.m(-2).s(-1) water permeate flux and 99.96% separation efficiency) and iii) excellent light-induced recyclability. With light-driven self-cleaning ability, the continuously deteriorated separation performance of aerogel can be easily renewed, and maintain an effective oil/water separation performance even after 120 cycles. Benefiting from its facile fabrication and excellent properties, the developed aerogel can be a promising candidate for practical oil/water separation in marine oil spill clean-up applications.
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