Electrochemical photocatalytic degradation of dye solution with a TiO2-coated stainless steel electrode prepared by electrophoretic deposition

Wei Chieh Lin, Chien Hung Chen, Han Yu Tang, Yu Cheng Hsiao, Jill Ruhsing Pan, Chi Chang Hu*, Ch-Hpin Huang

*此作品的通信作者

研究成果: Article同行評審

53 引文 斯高帕斯(Scopus)

摘要

This study demonstrates a new model for the treatment of azo dye wastewater by means of a heterogeneous photocatalytic degradation coupled with the homogeneous electrochemical Fenton reaction, and is called electrochemical photocatalytic (ECPC) degradation. Titanium dioxide-coated stainless steel (P25-TiO2/SS) mesh was employed as a photo-anode, covered with a uniform layer of P25-TiO2 using electrophoretic deposition (EPD) in a 2-propanol suspension with 10-4M Zn(NO3)2, at a deposition time of 1min. After annealing in air at 350°C for 1h, a crack-free, porous P25-TiO2 layer of ca. 2.14μm was obtained. Potential bias was used to enhance the photocatalytic degradation of P25-TiO2/SS towards the target pollutant, azo dye orange G, in an undivided cell under ultraviolet light irradiation. Heterogeneous photocatalytic degradation and a homogeneous electro-Fenton reaction occurred in the system simultaneously when H2O2 and Fe2+ were electrochemically generated on the graphite cathode and photo-anode, respectively, under a suitable potential bias, enhancing the de-colorization and removal of total organic carbon.

原文English
頁(從 - 到)32-41
頁數10
期刊Applied Catalysis B: Environmental
140-141
DOIs
出版狀態Published - 1 8月 2013

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