Photocatalytic Properties of TiO2-coatings Mounted on CaAl2O4:Euz2+,Nd3+ Without Light Source
This paper aims at the investigation of photocatalytic properties of titanium dioxide coatings covering on the surfaces of long blue-emitting afterglow CaAl204:Eu2+, Nd3+elaborated by a sol-gel method. Morphologies and microstructures of the coatings were observed mainly by transmission electron microscopy (TEM) and analyzed by X-ray diffraction (XRD). The photocatalytic behavior of the TiO2-base surfaces was evaluated by the degradation of methyl orange (MO) solution. It suggested that a layer of TiO2 film mounted on the phosphor particles successfully. Also, the TiO2 coatings had remained its photocatalytic role on the as-prepared sample even after the light source was removed. The inner long blue-emitting afterglow had released blue afterglow after removing light source and allowed for reactive TiO2 surfaces to be held for the removal of methyl orange.
Photocatalytic activity Long blue-emitting afterglow Independent of light source
Huihui Li Yuhua Wang
Department of Materials Science, School of Physical Science and Technology,Lanzhou University, Lanzhou 730000, Gansu, P.R.China
国际会议
10th International Symposium on Eco-Materials Processing and Design(第10届国际生态材料加工与设计研讨会)
西安
英文
671-674
2009-01-13（万方平台首次上网日期，不代表论文的发表时间）