Fabrication of BiOBr-silicone aerogel photocatalyst in an aqueous system with degradation performance by sol-gel method  

作　　者：GE Bo REN GuiNa YANG Hang YANG JingJing PU XiPeng LI WenZhi JIN ChuanYu ZHANG ZhaoZhu 

机构地区：[1]School of Materials Science and Engineering,Liaocheng University,Liaocheng 252000,China [2]School of Environmental and Material Engineering,Yantai University,Yantai 264405,China [3]State Key Laboratory of Solid Lubrication,Lanzhou Institute of Chemical Physics,Chinese Academy of Sciences,Lanzhou 730000,China

出　　处：《Science China(Technological Sciences)》2020年第5期859-865,共7页中国科学（技术科学英文版）

基　　金：supported by the Foundation of Shandong Training Project(Grant No.ZR2018PB014);PhD Early Development Program of Liaocheng University(Grant No.318051648);the PhD Programs of Shandong Province(Grant No.ZR2014EL009).

摘　　要：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℃ 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.

关 键 词：BiOBr silicone aerogel melamine sponge water purification 

分 类 号：O648.17[理学—物理化学] O643.36[理学—化学] O644.1