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| 纳米氧化锌晶须的制备及光催化降解苯胺研究 | |
| 引用本文： | 刘宏芳,吴润,黄茁.纳米氧化锌晶须的制备及光催化降解苯胺研究[J].武汉科技大学学报(自然科学版),2006,29(2):126-128. |
| 作者姓名： | 刘宏芳 吴润 黄茁 |
| 作者单位： | 1. 华中科技大学化学系,湖北,武汉,430074 2. 湖北省耐火材料与高温陶瓷重点实验室,湖北,武汉,430081 3. 长江科学院,湖北,武汉,430051 |
| 摘 要： | 研究纳米氧化锌晶须和氧化锌纳米粉末在紫外光光催化降解苯胺的能力,借助于色谱/质谱联用及紫外/可见光光谱对苯胺降解产物进行了分析.降解动力学研究结果表明,苯胺光降解符合准一级反应动力学规律,纳米氧化锌晶须催化反应速度比普通纳米粉末快,COD去除率高达89.4%;两者对苯胺光降解过程的中间产物相似,主要为醇类化合物,这些化合物进一步氧化为二氧化碳和少量聚合物. |
| 关 键 词： | 光催化氧化 苯胺 氧化锌纳米晶须 氧化锌纳米粉 |
| 文章编号： | 1672-3090(2006)02-0126-03 |
| 收稿时间： | 2005-04-27 |
| 修稿时间： | 2005年4月27日 |
Preparation and Photo-catalysis Activity of ZnO Nanowhisker |
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| LIU Hong-fang,WU Run,HUANG Zhuo.Preparation and Photo-catalysis Activity of ZnO Nanowhisker[J].Journal of Wuhan University of Science and Technology(Natural Science Edition),2006,29(2):126-128. | |
| Authors: | LIU Hong-fang WU Run HUANG Zhuo |
| Institution: | 1. Huazhong University of Science and Technology, Wuhan 430074, China; 2. Hubei Refractories and High-temperature Ceramics Key Laboratory, Wuhan 430081, China; 3. Yangtze River Science Reseach Institute, Wuhan 430051, China |
| Abstract: | The ultraviolet photocatalytic activities of ZnO Nanowhisker and ZnO nanoparticle samples were measured in aniline solution, and the degradation products were analyzed by means of chromatograph coupled with mass spectrometry and ultraviolet/visible spectrometry. The degradation kinetics research shows that the photocatalytic degradation of aniline observes the pseudo first-order kinetics and the degradation rate constant of the nanowhiskers is twice of that of the nanoparticles. The maximum removal of aniline over ZnO nanowhiskers is about 89.4% , but about 46.4% for ZnO nanoparticles during the same irradiation time. It is also found that the main degradation products of aniline are the same in aqueous suspensions of ZnO nanoparticles and ZnO nanowhiskers, which are further oxidized into CO2 and little polymer. |
| Keywords: | photocatalysis aniline ZnO nanowhisker ZnO nanoparticle |
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