| 淀粉/ZVI-Ni-Cu三金属复合材料降解三氯乙烯和氯仿的效能 |
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| 引用本文： | 谢蝶,胡晓雅,李云琴,周真明,苑宝玲,付明来. 淀粉/ZVI-Ni-Cu三金属复合材料降解三氯乙烯和氯仿的效能[J]. 环境科学学报, 2017, 37(11): 4078-4084 |
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| 作者姓名： | 谢蝶 胡晓雅 李云琴 周真明 苑宝玲 付明来 |
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| 作者单位： | 1. 华侨大学土木工程学院市政与环境工程研究所, 厦门 361021;2. 中国科学院城市环境研究所城市污染物转化重点实验室, 厦门 361021,1. 华侨大学土木工程学院市政与环境工程研究所, 厦门 361021;2. 中国科学院城市环境研究所城市污染物转化重点实验室, 厦门 361021,福州大学环境与资源学院, 福州 350108,华侨大学土木工程学院市政与环境工程研究所, 厦门 361021,华侨大学土木工程学院市政与环境工程研究所, 厦门 361021,中国科学院城市环境研究所城市污染物转化重点实验室, 厦门 361021 |
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| 基金项目： | 国家自然科学基金（No.51678255）；福建省国际合作重点项目（No.2014I0013） |
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| 摘 要： | 采用液相Na BH4还原法,制备出淀粉负载纳米铁镍双金属(淀粉/ZVI-Ni)和淀粉负载纳米铁镍铜三金属复合材料(淀粉/ZVI-Ni-Cu),并采用XRD、SEM、BET、XRF等仪器对其性能进行表征;进而对比其与纳米零价铁(ZVI)、淀粉负载零价铁(淀粉/ZVI)对三氯乙烯和氯仿的降解效果及影响淀粉/ZVI-Ni-Cu降解氯代烃的因素.结果表明:通过双金属和三金属的掺杂,可有效提高复合材料对氯代烃的降解,其降解效能关系为:淀粉/ZVI-Ni-Cu淀粉/ZVI-Ni/淀粉/ZVIZVI.其中淀粉/ZVI-Ni-Cu三金属复合材料在48 h内可实现氯代烃的完全降解.由于淀粉载体的加入,使得纳米金属材料成功地负载在淀粉上,复合材料的抗氧化性增强了,降解效果也更稳定可靠.
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| 关 键 词： | 淀粉 铁镍铜 降解 氯代烃 地下水 |
| 收稿时间： | 2017-02-09 |
| 修稿时间： | 2017-05-10 |
Degradation of trichloroethylene (TCE) and trichloromethane (CHCl3) by starch modified Fe/Ni nanoparticles |
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| XIE Die,HU Xiaoy,LI Yunqin,ZHOU Zhenming,YUAN Baoling and FU Minglai. Degradation of trichloroethylene (TCE) and trichloromethane (CHCl3) by starch modified Fe/Ni nanoparticles[J]. Acta Scientiae Circumstantiae, 2017, 37(11): 4078-4084 |
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| Authors: | XIE Die HU Xiaoy LI Yunqin ZHOU Zhenming YUAN Baoling FU Minglai |
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| Affiliation: | 1. College of Civil Engineering, Huaqiao University, Xiamen 361021;2. Key Laboratory of Urban Pollutant Conversion, Institute of Urban Environment, Chinese Academy of Sciences, Xiamen 361021,1. College of Civil Engineering, Huaqiao University, Xiamen 361021;2. Key Laboratory of Urban Pollutant Conversion, Institute of Urban Environment, Chinese Academy of Sciences, Xiamen 361021,College of Environment and Resources, Fuzhou University, Fuzhou 350108,College of Civil Engineering, Huaqiao University, Xiamen 361021,College of Civil Engineering, Huaqiao University, Xiamen 361021 and Key Laboratory of Urban Pollutant Conversion, Institute of Urban Environment, Chinese Academy of Sciences, Xiamen 361021 |
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| Abstract: | Zero-valent iron (ZVI)-Ni and ZVI-Ni-Cu nanoparticles were supported on the starch through chemical reduction by using NaBH4 as a reductant. The two composites were characterized by using XRD, SEM, BET and XRF. The degradation of trichloroethylene (TCE) and trichloromethane (CHCl3) by ZVI, starch/ZVI, starch/ZVI-Ni and starch/ZVI-Ni-Cu were compared. The performance of starch/ZVI-Ni-Cu on the degradation of TCE and CHCl3 were also explored. The results show that the degradation efficiency can be enhanced by adding bi-metals or tri-metals. The degradation efficiencies of the composites are as follows: starch/ZVI-Ni-Cu > starch/ZVI-Ni > starch/ZVI > ZVI. Complete degradation was achieved after 48 hours by starch/ZVI-Ni-Cu composite. The addition of starch allows the composite to be more stable and the adsorption of nanoparticles on the surface of the starch avoids mass transfer limitation allowing fast reaction. |
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| Keywords: | starch ZVI-Ni-Cu degradation chlorohydrocarbon ground water |
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