Cross-linked hydrogel coating membrane with photocatalytic self-cleaning performance for efficient oil-water separation

2024年08月05日11:32 来源：无

Researchers found that a double network structure of tannic acid and g-C3N4-coupled gelatin hydrogel creates a membrane with outstanding separation performance and self-cleaning capabilities for oil-water mixtures.

The research proves that the gelatine hydrogel membrane produced by ultrasonication and coating provides a separation efficiency of over 99% for both layered oil-water mixtures and oil-in-water emulsions and retains its performance after 40 cycles. Source: StockKing - adobe.stock.com

Oil-water separation is one of the most attractive areas in the field of energy and the environment. However, the synthesis of oil-water separation membranes with high separation efficiency and anti-fouling via simple methods is still a challenge. In this work, a double network with tannic acid and g-C3N4 cross-linked gelatin hydrogel coating membrane was prepared via ultrasound and coating. The prepared hydrogel had excellent mechanical properties and swelling resistance and also endowed the membrane with underwater superoleophobicity. For stratified oil-water mixtures, the separation flux achieved 40,355 ± 1957 L·m？2·h？1 and separation efficiency higher than 99 %.

source：european-coatings

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