Morphology selective construction of β-cyclodextrin functionalized Fe3O4-Bi2WO6 nanocomposite with superior adsorptivity and visible-light-driven catalytic activity  

作　　者：Maher Darwish Ali Mohammadi Navid Assi Samer Abuzerr Youssef Alahmad 

机构地区：[1]Pharmaceutical Quality Assurance Research Centre,Faculty of Pharmacy,Intermational Campus,Tehran University of Medical Sciences,Tehran,Iran [2]Department of Pharmacy,Al-Safwa University College,Karbala,lraq [3]Nanotechnology Research Centre,Faculty of Pharmacy,Tehran University of Medical Sciences,Tehran,Iran [4]Department of Environmental Health Engineering,Faculty of Public Health,Intermational Campus,Tehran University of Medical Sciences,Tehran,Iran [5]Department of Pharmaceutical Chemistry and Drug Control,Faculty of Pharmacy,Albaath University,Homs,Syria

出　　处：《Frontiers of Chemical Science and Engineering》2020年第4期561-578,共18页化学科学与工程前沿（英文版）

基　　金：The authors wish to thank Tehran University of Medical Sciences,Intermational campus,National Institute for Medical Research Development,Grant No.963445;Nanotechnology Research Centre for the financial and instrumental support of this research.

摘　　要：Controlled growth of Bi2WO6 nanorods with exposed[001]facets and the fabrication of an Fe2O4-Bi2WO6 magnetic composite by a microwave-assisted polyol process,were achieved in this study.The adsorp-tivity and photocatalytic performance of the composite toward sunset yellow dye degradation were greatly enhanced by the β-cyclodextrin cavities on its surface,firmly anchored through a cetyltrimethylammonium bro-mide linkage.A series of examinations and characteriza-tions were carried out to determine the influence of various factors on the morphological modulation-photocatalytic behavior of the pure Bi2WO6 prior to final functionaliza-tion.Changing the pH of the precursor solution impacted the formation of 0D,2D,and 3D structures;however,the presence of hexamethylenetetramine surfactant induced the development of 1D nanorod structure.A reasonable crystal growth mechanism was proposed to elucidate the formation process.Conversely,the mechanism of the activity enhancement of β-cyclodextrin functionalized Fe2O4-Bi2WO6,compared to that of the non-functiona-lized samples,could be realized with the assistance of chemical trapping experiments on sunset yellow,and was confirmed on the colorless antibiotic(sulfamethoxazole).The high performance and durability of this composite can be attributed to the facet-dependent activity,large adsorp-tion capacity due to inclusion interactions,enhanced visible light absorption,and efficient charge separation.

关 键 词：Β-CYCLODEXTRIN Bi2WO6 shape controlled nanorod sunset yellow 

分 类 号：O64[理学—物理化学]