Preparation and adsorption/photocatalytic performance of Ag/AgBr/AgI@SiO2 composite aerogel
In order to make full use of the excellent adsorption performance of SiO2 aerogel and the photocatalytic performance of AgBr/AgI heterojunction,Ag/AgBr/AgI@SiO2 composite aerogel(ABIS)materials with adsorption/visible light catalytic performance was prepared by in-situ synthesis and supercritical drying process.The crystal structure,surface morphology,pore structure,optical and electrochemical properties of the prepared composite aerogels were characterized by XRD,SEM,BET,DRS and electrochemical methods.The adsorption/visible light photocatalytic degradation experiment of tetracycline(TC)showed that the composite aerogel had higher adsorption capacity and visible light catalytic performance for tetracycline.The higher visible light photocatalytic activity of the composite aerogel could be attributed to its broadened visible light absorption range and its efficient photogenerated carrier separation and migration efficiency.The composite aerogels show good stability and recyclability,and have broad application prospects in the field of water treatment and environmental purification.
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