Enhanced activation of persulfate using mesoporous silica spheres augmented Cu–Al bimetallic oxide particles for bisphenol A degradation  

作　　者：Fulong Wang Liang Sun Ziyu Zhang Fengkai Yang Jinlong Yang Weijian Liu 

机构地区：[1]School of Environment and Safety Engineering,Qingdao University of Science and Technology,Qingdao 266042,China

出　　处：《Frontiers of Chemical Science and Engineering》2023年第10期1581-1592,共12页化学科学与工程前沿（英文版）

基　　金：This study was financially supported by the National Natural Science Foundation of China(Grant Nos.51408295 and 41907364);National Key R&D Program of China(Grant Nos.2022YFB3805104 and 2021YFB3801400);Key Research and Development Project of Shandong Province(Grant Nos.2017GSF217013 and 2018GSF117007);Major Scientific and Technological Innovation Project of Shandong Province(Grant No.2021CXGC011206).

摘　　要：Herein,Cu–Al bimetallic oxide was synthesized and mixed with mesoporous silica spheres via a simple hydrothermal method.The prepared sample was then analyzed and employed to activate potassium peroxydisulfate for bisphenol A removal.Based on the results of X-ray diffraction,scanning electron microscopy,and energy dispersion spectroscopy,Cu–Al bimetallic oxide was determined as CuO-Al2O3,and mesoporous silica spheres were found around the these particles.At 30 min,a bisphenol A degradation level of 90%was achieved,and it remained at over 60%after five consecutive cycles,indicating the catalyst’s superior capacity and stability.In terms of removal performance,the radical pathway(including■OH•,and■)and singlet oxygen(■)bisphenol A,potassium peroxydisulfate,and the catalyst played a dominant role.The introduction of Al2O3 promoted the formation of surface oxygen vacancies,which improved ligand complex formation between potassium peroxydisulfate and the catalyst,thereby facilitating electron migration.Furthermore,mesoporous silica spheres augment not only enhanced bisphenol A adsorption but also alleviated Cu leaching.Overall,this work is expected to provide significant support for the rational development of catalysts with high catalytic activity for persulfate activation via surface electron migration.

关 键 词：Cu-Al bimetallic oxides mesoporous silica spheres PEROXYDISULFATE bisphenol A 

分 类 号：O64[理学—物理化学]