| Electrically enhanced photodegradation of an azodye(Acid Orange Ⅱ) using a Pt/TiO2 film electrode irradiating with an UV lamp |
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| 作者姓名： | SU Jing QUAN Xie CHEN Shuo ZHAO Ya-zhi CHEN Guo-hua |
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| 作者单位： | [1]SchoolofEnvirnomentalScienceandTechnology,DalianUniversity,Dalian116012 [2]DepartmentofChemicalEngineering,HongKongUiversityofScienceandTechnology,HongKongSAR |
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| 摘 要： | A photoelectrochemical process in the degradation of an azodye(Acid Orange II)on a Pt/TiO2 film electrode was investigated.By using the glass device and the voltage stabilized source of direct current,decolorization ratios higher than 78% were observed during a period of 5h.Comparing this value with the sum of the decolorization ratios obtained by a sole application of electrochemical(lower than 3%)and photochemical(about 23%)procedures, a significant synergic effect between both processes was observed.The effects of adscititious voltage and pH value on the decolorization ratios were obvious while the effect of the amount of aeration was minor.
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| 关 键 词： | 偶氮染料 Pt／TiO2膜电极 电增强光降解 UV灯照射 |
| 收稿时间： | 2001/10/30 0:00:00 |
| 修稿时间： | 2001/12/28 0:00:00 |
Electrically enhanced photodegradation of an azodye (acid orange II) using a Pt/TiO2 film electrode irradiating with an UV lamp |
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| SU Jing,QUAN Xie,CHEN Shuo,ZHAO Ya-zhi,CHEN Guo-hua.Electrically enhanced photodegradation of an azodye (acid orange II) using a Pt/TiO2 film electrode irradiating with an UV lamp[J].Journal of Environmental Sciences,2003,15(1):60-64. |
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| Authors: | Su Jing Quan Xie Chen Shuo Zhao Ya-Zhi Chen Guo-Hua |
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| Institution: | 1. School of Environmental Science and Technology, Dalian University of Technology, Dalian 116012, China
2. Department of Chemical Engineering, Hong Kong University of Science and Technology, Hong Kong SAR |
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| Abstract: | A photoelectrochemical process in the degradation of an azodye (Acid Orange II) on a Pt/TiO2 film electrode was investigated. By using the glass device and the voltage stabilized source of direct current, decolorization ratios higher than 78% were observed during aperiod of 5 h. Comparing this value with the sum of the decolorization ratios obtained by a sole application of electrochemical (lower than 3%) and photochemical (about 23%) procedures, a significant synergic effect between both processes was observed. The effects of adscititious voltage and pH value on the decolorization ratios were obvious while the effect of the amount of aeration was minor. |
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| Keywords: | photoelectrochemical process Pt/TiO2 film electrode synergic effect |
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