| Pt/TiO2光催化氧化还原耦合反应脱除水中无机氮 |
| Nitrogen Removal via Coupled Ammonia Oxidation and Nitrite Reduction Using Pt/TiO2 and Photocatalysis |
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| 摘要: 本文采用光催化还原法制备了高活性的载铂二氧化钛光催化剂，并用XRF、TEM、XRD对样品进行了表征，考察了pH值、负载Pt的含量、Fe2+的添加及保护气的种类等反应条件对该催化剂活性的影响。结果表明：碱性条件下利于氨氮、亚硝酸氮的耦合脱氮反应，载铂量0.5%时去除效果最佳，Fe2+的加入利于光催化反应，氮气保护下催化剂反应活性更高。 |
| 关键词: Pt/TiO2 光催化反应 氨氮 亚硝酸氮 |
| 基金项目: |
| Abstract: Pt/TiO2 photocatalyst was prepared using a photocatalytic reduction method and characterized with XRF, TEM and XRD. Effects of factors such as pH, Pt loading, addition of Fe2+ and protection gas on the activity of photocatalyst in nitrogen removal by coupled ammonia oxidation and nitrite reduction were investigated. Results showed that a basic condition was in favor of the coupled ammonia oxidation, nitrite reduction rate. The nitrogen removal rate was the highest with 0.5% Pt loading. Also, the photocatalyst activity was enhanced under protection gas N2 and addition of Fe2+ increased the activity of photocatalytic reduction of nitrite. |
| Keywords: Pt/TiO2 photocatalysis ammonia nitrite |
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| 李秀婷,柳丽芬,杨凤林,张兴文,JohnBarford.Pt/TiO2光催化氧化还原耦合反应脱除水中无机氮[J].无机化学学报,2006,22(7):1180-1186. |
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