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›› 2009, Vol. 9 ›› Issue (5): 916-921.

• 过程与工艺 • 上一篇    下一篇

Interactive Oxidation of Photocatalysis and Electrocatalysis for Degradation of Phenol in a Photoreactor

樊彩梅 王艳 梁镇海 王韵芳 孙彦平 孙彦平   

  1. 太原理工大学化学化工学院 太原理工大学化学与生物工程学院 太原理工大学化学化工学院 太原理工大学化学化工学院 山西太原理工大学洁净化工研究所
  • 收稿日期:2009-02-09 修回日期:2009-05-12 出版日期:2009-10-20 发布日期:2009-10-20
  • 通讯作者: 樊彩梅

Interactive Oxidation of Photocatalysis and Electrocatalysis for Degradation of Phenol in a Photoreactor

Fan Cai-mei WANG Yan LIANG Zhen-hai WANG Yun-fang HAO Xiao-gang, SUN Yan-ping   

  1. Taiyuan University of Technology,Taiyuan,Shanxi Taiyuan University of Science and Technology Taiyuan University of Technology Taiyuan University of Technology Taiyuan University of Technology,Taiyuan,Shanxi
  • Received:2009-02-09 Revised:2009-05-12 Online:2009-10-20 Published:2009-10-20
  • Contact: Fan Cai-mei

摘要: TiO2/C particles as photocatalyst were prepared by dipping TiO2 suspension solution with activated carbon and were applied in the photocatalytic-electrocatalytic degradation of phenol, the Ti/SnO2+Sb2O3/PbO2 electrode and oxygen diffusion electrode were used as anode and cathode respectively, and a 250 W ultraviolet lamp (365 nm) as side light source. The SEM results of TiO2/C and Ti/SnO2+Sb2O3/PbO2 anode indicated that the TiO2 on carbon particles was uniform and PbO2 film on the surface of anode was in cauliflower form, the XRD result of oxygen diffusion electrode showed that only crystalline graphite was found. The influential parameters of degradation process such as applied cell voltage (E), initial concentration of phenol (C0), amount of TiO2 catalyst and air flow rate (v) were discussed. Under the following experimental conditions of C0=50 mg/L, pH=6, E=2 V, TiO2 0.98 mg/mL, v=382.2 mL/min, and light intensity I=10.5 mW/cm2, phenol could be entirely degraded, and about 89% of total organic carbon (TOC) was removed after 3 h degradation.

关键词: interactive oxidation, photocatalysis and electrocatalysis, TiO2/C, phenol

Abstract: TiO2/C particles as photocatalyst were prepared by dipping TiO2 suspension solution with activated carbon and were applied in the photocatalytic-electrocatalytic degradation of phenol, the Ti/SnO2+Sb2O3/PbO2 electrode and oxygen diffusion electrode were used as anode and cathode respectively, and a 250 W ultraviolet lamp (365 nm) as side light source. The SEM results of TiO2/C and Ti/SnO2+Sb2O3/PbO2 anode indicated that the TiO2 on carbon particles was uniform and PbO2 film on the surface of anode was in cauliflower form, the XRD result of oxygen diffusion electrode showed that only crystalline graphite was found. The influential parameters of degradation process such as applied cell voltage (E), initial concentration of phenol (C0), amount of TiO2 catalyst and air flow rate (v) were discussed. Under the following experimental conditions of C0=50 mg/L, pH=6, E=2 V, TiO2 0.98 mg/mL, v=382.2 mL/min, and light intensity I=10.5 mW/cm2, phenol could be entirely degraded, and about 89% of total organic carbon (TOC) was removed after 3 h degradation.

Key words: interactive oxidation, photocatalysis and electrocatalysis, TiO2/C, phenol

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