光电催化法测定COD的研究
文献类型：学位论文
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| 作者 | 田玉华 |
| 学位类别 | 硕士 |
| 答辩日期 | 2008-06-02 |
| 授予单位 | 中国科学院广州能源研究所 |
| 授予地点 | 广州能源研究所 |
| 导师 | 李新军 |
| 关键词 | 光催化 COD 测定 TiO2薄膜电极 |
| 其他题名 | investigation on Photoelectrocatalysis determination of chemical oxygen demand |
| 中文摘要 | Photocatalysis,as a kind of advanced Oxidation Processes,has potentially applied in many fields,such as environmental treatment, environmental monitoring,et al.A simple,without secondary pollutant,rapid,and sensitive on-line chemical oxygen demand (COD) determination has more meriton photocatalysis oxidative. At present, the determination of COD based on Photoatalysis with pure TiO2 film electrode was mostly investigate in three electrode systems. The effects of COD determination based on photocatalysis was mostly investigate at Mn nonuniform doping TiO2 nanoporouse and TiO2 nanotube film electrod A photocatalysis fuel cell COD determination method was discussed in this paper. The electrode of TiO2 film, doped by Mn ion with nonuniform distribution, which was prepared adopting sol-gel method. Chemical oxygen Demand (COD) was determinated by photoelectrocatalysis method with Mn nonuniform doping TiO2 film electrode. In three electrode systems, the Chemical Oxygen Demand (COD) of four kinds of organic matter, succinic acid, ethanol, potassium hydrogen phthalate, α-D-glucose, was photoelectrochemical determined at Mn-TiO2 film electrode and pure TiO2 film electrode.The data of the experimentation indicated that Chemical oxygen demand is directly quantified by measuring the amount of electron transferred at Mn nonuniform doping TiO2 film electrode during anexhaustive photoelectroncatalytic degradation the organic.The degradation of succinic acid, ethanol, potassium hydrogenphthalate, α-D-glucose was more efficient by Mn-TiO2 film electrode compared with pure TiO2 one. The photoelectrochemistry characterization, EISNyquist plots and LSV, show that Mn non-uniform doping cause the photo-generated carrier separation and photoholes’ enrichment of TiO2 film electrode, which result in better photo catalytic efficiency. Trititanate nanotubes was prepared adopting hydrothermal synthesis method, Trititanate nanotube and TiO2 of P25 film electrowas prepared adopting dip-coating method. In three electode systems, performance of succinic acid, ethanol, α-D-glucose, mixed organic matter was investigated at Film Electrode of trititanate nanotubes and P25. The data of the experimentationindiated that all organic matter investigated, the Saturation photocurrent (Isph) increased linearly with concentration in the low concentration range. photocatalysis action of P25 is four times than photocatalysis action of trititanate nanotubes. Isph of trititanate nanotubes is two or four times than Isph of P25 for measured organic matter. mechanism of Saturation photocurrent and concentration relationships was analyzed. A simple install of photocatalysis fuel cell was assembled with film electrode of TiO2 nanotubes photoanode, Nafion117and Pt cathode. The effects of important experimental conditions, such as applied potential bias, supporting electrolyte concentration and pH,et al on the determination of organic,was investigated. The data of the experimenttation indicated that the steady state Isph values were measured at more +0.2 V at different potential bias. the steady state Isph values was were measured at more 1.0moL/L at supporting electrolyte concentration of NaNO3 were biggest between four point eight pH.and five point eight pH.At last,Chemical Oxygen Demand (COD) for ethanol was determinated by photoelectrocatalysis method with TiO2 nanotube film electrode. Keywords: Photocatalysis, COD, determination, TiO2 film |
| 语种 | 中文 |
| 公开日期 | 2011-07-14 ; 2011-07-15 |
| 页码 | 72 |
| 源URL | [http://ir.giec.ac.cn/handle/344007/5818]  |
| 专题 | 中国科学院广州能源研究所 |
| 推荐引用方式 GB/T 7714 | 田玉华. 光电催化法测定COD的研究, investigation on Photoelectrocatalysis determination of chemical oxygen demand[D]. 广州能源研究所. 中国科学院广州能源研究所. 2008. |
入库方式： OAI收割
来源：广州能源研究所
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