Preparation of FePc-TiO2/CS composites and application in photocatalytic degradation of dye wastewater
DAI Yan1,2, WANG Shuo1, TIAN Li-ming1, XIAO Wu1
1. State Key Laboratory of Fine Chemicals, R & D Center of Membrane Science and Technology, Liaoning Provincial Engineering Laboratory for Petrochemical Separation Technologies, Dalian University of Technology, Dalian 116023, China; 2. Panjin Industrial Technology Institute, Dalian University of Technology, Panjin 124221, China
Abstract: Titanium dioxide (TiO2) has advantages such as good chemical stability and high photocatalytic activity.It has been widely used in photocatalytic degradation reaction,but its utilization efficiency for visible light is low.In this study,iron phthalocyanine (FePc) with strong absorption in the visible region is used to enhance the photocatalytic properties of TiO2 under visible light.Iron phthalocyanine-titanium dioxide/chitosan (FePc-TiO2/CS) composites are prepared by freeze-drying method,and their surface morphology,crystal structure and thermal weight loss behaviors are characterized.The prepared FePc-TiO2/CS are used as photodegradation catalysts for degradation of acidic orange 7 solution.The results show that the FePc-TiO2/CS composites prepared by freeze-drying method exhibits porous structure.In the temperature range of 100-200℃,the decomposition of FePc results in a significant weight loss peak in the thermal weight loss curve of the composites.FePc-TiO2/CS composites exhibit high photocatalytic degradation performance and make the degradation rate of acidic orange 7 solution exceed 90% in 30 min.FePc-TiO2/CS composites have good stability.After 3 times of repeated uses,the photocatalytic activity of FePc-TiO2/CS composites against acid orange 7 remains high level.
代岩, 王硕, 田黎明, 肖武. FePc-TiO2/CS复合材料制备及光催化降解染料废水[J]. 现代化工, 2018, 38(7): 89-92.
DAI Yan, WANG Shuo, TIAN Li-ming, XIAO Wu. Preparation of FePc-TiO2/CS composites and application in photocatalytic degradation of dye wastewater. Modern Chemical Industry, 2018, 38(7): 89-92.