| 引用本文: | 田斐,朱荣淑,董文艺,欧阳峰.KBrO3协同载贵金属TiO2光催化降解阿莫西林[J].哈尔滨工业大学学报,2013,45(10):41.DOI:10.11918/j.issn.0367-6234.2013.10.008 |
| TIAN Fei,ZHU Rongshu,DONG Wenyi,OUYANG Feng.Synergistic photocatalytic degradation of amoxicillin by precious metal supported TiO2 with KBrO3[J].Journal of Harbin Institute of Technology,2013,45(10):41.DOI:10.11918/j.issn.0367-6234.2013.10.008 |
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| KBrO3协同载贵金属TiO2光催化降解阿莫西林 |
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田斐1,2, 朱荣淑1,2, 董文艺1,2, 欧阳峰1,2
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(1. 哈尔滨工业大学深圳研究生院 环境科学与工程研究中心, 518055 广东 深圳; 2. 深圳市水资源利用与环境污染控制重点实验室, 518055 广东 深圳)
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| 摘要: |
| 为提高二氧化钛光催化去除阿莫西林的效率,利用光沉积法制备了载贵金属TiO2催化剂 (M／TiO2,M为Ru、Rh、Pd、Ag、Ir、Pt或Au),研究紫外光(365 nm)下KBrO3协同M／TiO2光催化降解阿莫西林的活性,并以KBrO3协同Rh／TiO2研究实验条件对催化活性的影响．结果表明：M／TiO2光催化降解阿莫西林的催化活性与贵金属的功函数密切相关;KBrO3对不同M／TiO2光催化降解阿莫西林的反应均具有很好的协同效果;在Rh载量为0.1％(质量分数)、催化剂质量浓度为0.15 g／L、KBrO3浓度为0.5 mmol／L、溶液pH为5的条件下,20 mg／L的阿莫西林溶液90 min光催化降解率达100％,且该反应符合一级反应动力学模型． |
| 关键词: 溴酸钾 协同光催化 载贵金属二氧化钛 阿莫西林 功函数 动力学 |
| DOI：10.11918/j.issn.0367-6234.2013.10.008 |
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| 基金项目:国家自然科学基金青年基金资助项目(20907012); 国家科技重大专项(2008ZX07211-004-3). |
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| Synergistic photocatalytic degradation of amoxicillin by precious metal supported TiO2 with KBrO3 |
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TIAN Fei1,2, ZHU Rongshu1,2, DONG Wenyi1,2, OUYANG Feng1,2
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(1.Environmental Science and Engineering Research Center, Harbin Institute of Technology Shenzhen Graduate School, 518055 Shenzhen, Guangdong, China; 2. Shenzhen Key Laboratory of Water Resource Utilization and Environmental Pollution Control, 518055 Shenzhen, Guangdong, China)
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| Abstract: |
| To improve the photocatalytic efficiency of TiO2 for amoxicillin removal, a series of precious metals catalysts (M／TiO2, M=Ru, Rh, Pd, Ag, Ir, Pt or Au) were prepared by light deposition method. The synergistic photocatalytic activity of M／TiO2 with KBrO3 for degradation of amoxicillin (20 mg／L) in aqueous solution was researched under UV light (365 nm). The effects of metal loading, catalyst concentration, KBrO3 concentration and pH on the photocatalytic activity of Rh／TiO2 with KBrO3 were explored. The results show that the photocatalytic activity of M／TiO2 is closely related to its work function and KBrO3has a greatly synergistic role on M／TiO2. Under the conditions of 0.1％ Rh loading, Rh／TiO2 concentration of 0.15 g／L, KBrO3 concentration of 0.5 mmol／L and reaction liquid pH value at 5, the amoxicillin can be degradated completely within 90 min. Furthermore, the results of kinetic study show that the degradation reaction can be expressed by the first-order reaction kinetic model. |
| Key words: potassium bromate synergistic photocatalysis precious metal titanium dioxide amoxicillin work function kinetic study |
