Fe2O3 Photocatalyst Supported on Ultra-fine Fibrous Al2O3 Prepared via Electro- blown Spinning (EBS) with an Application to Organic Dye Degradation
Lei LI1,2,Bowen CHENG2,Weimin KANG2,Xiaoguang MA2,Xupin ZHUANG2
1 School of Materials Science and Engineering,Tianjin Polytechnic University,Tianjin 300387 2 State Key Laboratory of Separation Membranes and Membrane Processes, Tianjin Polytechnic University, Tianjin 300387
Ultra-fine fibrous Al2O3 supported Fe2O3 photocatalyst was prepared by an electro-blown spinning (EBS) method combined with impregnation-calcination process, and characterized by techniques such as SEM,EDS and XRD. Photocatalytic degradation of Reactive Red 195 (RR 195) in aqueous solution was used as a probe reaction to evaluate the product’s photocatalytic activity. The results showed that flexible and ultra-fine fibrous alumina mat, which is appropriate for photocatalyst supporter and has an average diameter of 3.78 μm, can be obtained via electro-blown spinning method. The catalytic experimental results suggested that the optimum photocatalytic performance of the photocatalyst was achieved when the sintering temperature was 500 ℃ and the iron loaded content was 195.5 mg/g. The dye decoloration rate reached 95% within 120 min for the first run with H2O2 and UV light, and it can be maintained 70% after three rounds. Moreover,this photocatalyst still maintained good fabric morphology after reaction and was easier to be separated from dye solution, which could avoid the secondary pollution effectively.
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2018, Vol. 32 
