| 影响TiO2纳米管光电催化还原Cr(VI)的因素探讨 |
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| 引用本文： | 汪青,尚静,宋寒.影响TiO2纳米管光电催化还原Cr(VI)的因素探讨[J].催化学报,2011,32(9):1525-1530. |
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| 作者姓名： | 汪青 尚静 宋寒 |
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| 作者单位： | 北京大学环境科学与工程学院环境模拟与污染控制国家重点联合实验室,北京,100871 |
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| 基金项目： | 国家自然科学基金(20407002); 国家重点基础研究发展计划(973计划,2002CB410802); 环境模拟与污染控制国家重点联合实验室(北京大学)专项基金~~ |
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| 摘 要： | 采用阳极氧化法在Ti基底上生长TiO2纳米管(TNT)阵列薄膜,利用扫描电镜和X射线衍射对样品的形貌和结构进行了表征.以TNT薄膜为光阳极、Ti网为光阴极,在酸性条件下进行紫外光光电催化还原Cr(VI),探讨了外加偏压、NaCl浓度、柠檬酸浓度以及Cr(VI)初始浓度对反应性能的影响.结果表明,外加电压有效地促进了电子...
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| 关 键 词： | 二氧化钛纳米管 六价铬 光电催化 还原 |
Factors Influencing the Photoelectrocatalytic Reduction of Cr(VI) over TiO_2 Nanotube Arrays |
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| WANG Qing,SHANG Jing,SONG Han.Factors Influencing the Photoelectrocatalytic Reduction of Cr(VI) over TiO_2 Nanotube Arrays[J].Chinese Journal of Catalysis,2011,32(9):1525-1530. |
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| Authors: | WANG Qing SHANG Jing SONG Han |
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| Institution: | WANG Qing,SHANG Jing*,SONG Han State Key Joint Laboratory of Environmental Simulation and Pollution Control,College of Environmental Sciences and Engineering,Peking University,Beijing 100871,China |
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| Abstract: | TiO2 nanotube (TNT) arrays present excellent light trapping and electronic conduction ability. TNT film was prepared by the anodic oxidation method using Ti slice as the substrate. The morphology and structure of the TNT film were characterized by scanning electron microscopy and X-ray diffraction, respectively. Photoelectrocatalytic (PEC) reduction of Cr(VI) was carried out using the TNT arrays as the photoanode and Ti mesh as the photocathode under acid conditions and ultraviolet light irradiation. The in... |
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| Keywords: | titania nanotube chromium (VI) photoelectrocatalysis reduction |
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