中国科学院材料磨损与防护重点实验室/先进润滑与防护材料研究发展中心知识库

It is a challenge to endow the material with the ability to pollutants degradation while maintaining the oil/water separation
performance. Herein, the mixed dispersion of BiOBr photocatalyst and silicone sol was adsorbed in melamine foam. Superhydrophobic
BiOBr-silicone aerogel (WCA=154°) was obtained through the transfer melamine foam to an autoclave and
reaction at 80°C for 20 h. The prepared superhydrophobic BiOBr-silicone aerogel can effectively remove the water soluble
pollutants which remain within the water phase after oil/water separation. The band gap of the superhydrophobic BiOBr-silicone
aerogel was calculated to be 2.71 eV, which shows sensitivity to visible light (458 nm). Through mechanism analysis, it is found
that the VB position of BiOBr is at 1.07 eV and the position of CB is at −1.64 eV. Finally, we prepared a superhydrophobic
BiOBr-silicone aerogel (5 cm×5 cm×3 cm) for the verification of the large scale preparation.