| TiO2纳米薄片的合成及其光催化降解苯酚性能 |
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| 引用本文： | 李丽媛,江 芳,万海勤,许昭怡,郑寿荣. TiO2纳米薄片的合成及其光催化降解苯酚性能[J]. 无机化学学报, 2011, 27(6): 1041-1046 |
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| 作者姓名： | 李丽媛 江 芳 万海勤 许昭怡 郑寿荣 |
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| 作者单位： | 1. 南京大学环境学院污染控制与资源化研究国家重点实验室,南京,210046
2. 南京理工大学环境与生物工程学院,南京,210094 |
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| 基金项目： | 国家自然科学基金，科技部国际科技合作 |
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| 摘 要： | 以钛酸纳米管为前驱体，通过添加NaF高温水热合成了(001)面暴露的TiO2纳米薄片，并对其催化苯酚光降解行为进行了研究。结果表明经水热反应后，钛酸型TiO2纳米管(NT)转晶成锐钛矿型TiO2纳米薄片(NS)，且具有高(001)暴露面。和NT相比，NS对苯酚的光催化降解活性显著提高，其活性随水热温度升高而增加。NS光催化去除苯酚符合一级动力学，其中200 ℃合成的NS反应速率常数k最高，为0.083 min-1。同时，苯酚的光催化反应初活性与其初浓度的关系符合Langmuir-Hinshelwood模型，表明苯酚的光催化降解受吸附控制。
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| 关 键 词： | TiO2纳米薄片； 水热合成； 光催化降解苯酚 |
TiO2 Nanosheet: Synthesis and Photocatalytic Performance for Phenol Degradation |
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| LI Li-Yuan,JIANG Fang,WAN Hai-Qin,XU Zhao-Yi and ZHENG Shou-Rong. TiO2 Nanosheet: Synthesis and Photocatalytic Performance for Phenol Degradation[J]. Chinese Journal of Inorganic Chemistry, 2011, 27(6): 1041-1046 |
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| Authors: | LI Li-Yuan JIANG Fang WAN Hai-Qin XU Zhao-Yi ZHENG Shou-Rong |
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| Affiliation: | State Key Laboratory of Pollution Control and Resource Reuse, and School of the Environment, Nanjing University, Jiangsu 210046 China,Nanjing University of Science and Technology, Nanjing 210094 China,State Key Laboratory of Pollution Control and Resource Reuse, and School of the Environment, Nanjing University, Jiangsu 210046 China,State Key Laboratory of Pollution Control and Resource Reuse, and School of the Environment, Nanjing University, Jiangsu 210046 China and State Key Laboratory of Pollution Control and Resource Reuse, and School of the Environment, Nanjing University, Jiangsu 210046 China |
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| Abstract: | TiO2 nanosheet(NS) with exposed(001) facets was synthesized via a hydrothermal approach using titanate nanotube(NT) as the precursor and NaF as the shape controlling agent.Photocatalytic phenol degradation over the catalysts was investigated.Results showed that upon hydrothermal treatment NT was transformed to anatase NS with high(001) facets.In comparison with NT,NS displayed much higher photocatalytic activity for phenol degradation,and the catalytic activity increased with the hydrothermal temperature.Ph... |
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| Keywords: | TiO2 nanosheet hydrothermal synthesis photocatalytic phenol degradation |
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