| 包覆型纳米铁的制备及其去除三氯乙烯的研究 |
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| 引用本文： | 王薇,金朝晖,李铁龙.包覆型纳米铁的制备及其去除三氯乙烯的研究[J].中国环境科学,2009,29(8):811-815. |
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| 作者姓名： | 王薇 金朝晖 李铁龙 |
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| 作者单位： | 南开大学环境科学与工程学院,天津,300071 |
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| 基金项目： | 天津市自然科学基金资助项目 |
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| 摘 要： | 采用微乳聚合法成功的用聚甲基丙烯酸甲脂(PMMA)包覆了纳米铁粒子.透射电镜、红外光谱和热重分析证明,PMMA包覆层存在于铁表面,包覆型纳米铁在空气中的稳定性明显提高.批次实验结果表明,该纳米材料能有效降解环境污染物三氯乙烯(TCE),包覆型纳米铁对TCE的还原反应符合准一级反应动力学.
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| 关 键 词： | 纳米铁 聚甲基丙烯酸甲酯 纳米复合粒子 微乳聚合 三氯乙烯 |
| 收稿时间： | 2008-12-04; |
Synthesis of coated nanoiron particles for trichloroethene removal |
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| WANG Wei,JIN Zhao-hui,LI Tie-long.Synthesis of coated nanoiron particles for trichloroethene removal[J].China Environmental Science,2009,29(8):811-815. |
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| Authors: | WANG Wei JIN Zhao-hui LI Tie-long |
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| Abstract: | Nanoscale iron particles were entrapped successfully in poly (methyl methacrylate) (PMMA) by microemulsion polymerization. The presence of PMMA on the nanoscale iron particle surface was verified by transmission electron microscopy, fourier transform infrared spectroscopy and thermo gravimetric analysis, which significantly improved the stability of the nanoiron /PMMA composite particles in air. Batch experiments confirmed that the Fe /PMMA composite particles were capable of effective removal of trichloroethene (TCE). It revealed that degradation of TCE by composite particles well obeyed a pseudo-first order kinetics model. |
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| Keywords: | nanoiron particle poly methyl methacrylate composite nanoparticle microemulsion polymerization trichloroethylene |
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