| TiO2纳米管催化降解4，4’-二溴联苯的影响因素和动力学研究 |
| |
| 引用本文： | 侯泽华,刘国光,刘海津.TiO2纳米管催化降解4，4’-二溴联苯的影响因素和动力学研究[J].环境污染治理技术与设备,2011(11):2481-2486. |
| |
| 作者姓名： | 侯泽华 刘国光 刘海津 |
| |
| 作者单位： | [1]河南师范大学化学与环境科学学院、黄淮水污染与控制省部共建教育部重点实验室,新乡453007 [2]广东工业大学环境科学与工程学院,广州510006 |
| |
| 基金项目： | 国家自然科学基金资助项目（20677012）;国家“水体污染控制与治理”科技重大专项（2009ZX07211-005-03）;广东省一教育部省部产学研项目（20098090300342） |
| |
| 摘 要： | 利用TiO2纳米管催化降解水中的4，4’-二溴联苯，对催化降解过程和影响因素进行研究。结果表明，TiO2纳米管对其有较高的催化降解效率且降解过程符合Langmuir—Hinshelwood动力学模式。不同光源、4，4’-二溴联苯的初始浓度、纳米管添加量和pH值对催化降解过程都有较大影响，其中pH值的影响最为明显。反应液在中性状态下的降解率明显低于pH=1或11的情况。在pH=1时，4，4’一二溴联苯的降解率达86％。
|
| 关 键 词： | 4 4’-二溴联苯 TiO2纳米管 光催化 |
Studies on influencing factors and kinetics of photocatalytic degradation of 4, 4＇-DBB of TiO2 nanotubular |
| |
| Hou Zehua,Liu Guoguang,Liu Haijin.Studies on influencing factors and kinetics of photocatalytic degradation of 4, 4＇-DBB of TiO2 nanotubular[J].Techniques and Equipment for Environmental Pollution Control,2011(11):2481-2486. |
| |
| Authors: | Hou Zehua Liu Guoguang Liu Haijin |
| |
| Institution: | 1. Key Laboratory for Yellow River and Huaihe River Water Environment and Pollution Control, Ministry of Education, College of Chemistry and Environmental Science, Henan Normal University, Xinxiang 453007,China; 2. Faeuhy of Environmental Science and Engineering, Guangdong University of Technology, Guangzhou 510006, China) |
| |
| Abstract: | The efficiency and influencing factors of the photocatalytic degradation of 4, 4＇-DBB in water were studied using TiO2 nanotubular as photocatalyst under UV irradiation. The results show that the photocatalytic degradation of 4, 4＇-DBB in water by TiO2 nanotubular is efficient. The degradation of 4, 4＇-DBB follows the Langmuir-Hinshelwood kinetics reaction. The experiments show that several parameters have great impacts on the photocatalytic degradation process such as light source, 4, 4＇-DBB initial concentration, nanotubular amount,pH value and so on. And pH plays an important role in the degradation process. Higher degradation rates are reached in pH = 1 or pH = ll solution and lower in neutral solution. The degradation rate of 4, 4＇ -DBB is 86% at pH = 1. |
| |
| Keywords: | 4 4＇ -DBB TiO2 nanotubular photocatalysis |
| 本文献已被 维普 等数据库收录！ |
