| 颗粒尺寸对纳米氧化物环境行为的影响 |
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| 引用本文： | 严玉鹏,唐亚东,万彪,王小明,刘凡,冯雄汉.颗粒尺寸对纳米氧化物环境行为的影响[J].环境科学,2018,39(6):2982-2990. |
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| 作者姓名： | 严玉鹏 唐亚东 万彪 王小明 刘凡 冯雄汉 |
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| 作者单位： | 华中农业大学资源与环境学院农业部长江中下游耕地保育重点实验室 |
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| 基金项目： | 国家自然科学基金项目（41603100，41471194）；国家重点研发计划项目（2017YFD0200201） |
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| 摘 要： | 随着纳米技术迅猛发展,纳米颗粒的环境行为和生态效应越来越受到关注.纳米氧化物作为环境中的重要组成,广泛存在于水体、大气、土壤以及沉积物中,其大比表面积和高表面活性,控制和影响着环境中一些污染物和营养元素的形态、迁移、转化和生物有效性.纳米尺寸是纳米颗粒特有属性,颗粒尺寸大小调控和决定纳米氧化物的结构及物理化学特性,从而在较大程度上影响其与相关元素的界面反应性和环境地球化学行为.综述了纳米氧化物的尺寸对吸附、(还原)溶解、(催化)氧化、聚集和迁移等环境行为的影响,讨论了尺寸效应的作用机制,最后展望了环境中纳米金属氧化物尺寸效应有关的研究热点和方向.
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| 关 键 词： | 纳米颗粒 金属氧化物 尺寸效应 吸附 溶解 催化 聚集 迁移 环境行为 |
| 收稿时间： | 2017/10/30 0:00:00 |
| 修稿时间： | 2017/12/22 0:00:00 |
Impact of Size on Environmental Behavior of Metal Oxide Nanoparticles |
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| YAN Yu-peng,TANG Ya-dong,WAN Biao,WANG Xiao-ming,LIU Fan and FENG Xiong-han.Impact of Size on Environmental Behavior of Metal Oxide Nanoparticles[J].Chinese Journal of Environmental Science,2018,39(6):2982-2990. |
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| Authors: | YAN Yu-peng TANG Ya-dong WAN Biao WANG Xiao-ming LIU Fan and FENG Xiong-han |
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| Institution: | Key Laboratory of Arable Land Conservation(Middle and Lower Reaches of Yangtse River), Ministry of Agriculture, College of Resources and Environment, Huazhong Agricultural University, Wuhan 430070, China,Key Laboratory of Arable Land Conservation(Middle and Lower Reaches of Yangtse River), Ministry of Agriculture, College of Resources and Environment, Huazhong Agricultural University, Wuhan 430070, China,Key Laboratory of Arable Land Conservation(Middle and Lower Reaches of Yangtse River), Ministry of Agriculture, College of Resources and Environment, Huazhong Agricultural University, Wuhan 430070, China,Key Laboratory of Arable Land Conservation(Middle and Lower Reaches of Yangtse River), Ministry of Agriculture, College of Resources and Environment, Huazhong Agricultural University, Wuhan 430070, China,Key Laboratory of Arable Land Conservation(Middle and Lower Reaches of Yangtse River), Ministry of Agriculture, College of Resources and Environment, Huazhong Agricultural University, Wuhan 430070, China and Key Laboratory of Arable Land Conservation(Middle and Lower Reaches of Yangtse River), Ministry of Agriculture, College of Resources and Environment, Huazhong Agricultural University, Wuhan 430070, China |
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| Abstract: | With the rapid development of nanotechnology, the environmental behavior and ecological effect of nanoparticles (NPs) are receiving more and more attention. As an important environmental component, metal oxide NPs occur widely in nature, such as in water bodies, air, soils, and sediments. They have a large surface area and high surface activity, allowing them to control and affect the speciation, migration, transformation, and bioavailability of some contaminants and nutrients in the environment. The nano-size is a unique property of nanoparticles. The size of particles regulates and determines the structure and physicochemical properties of nano-oxides, which greatly affects interfacial reactions with the relevant elements and environmental geochemical behaviors. The effects of NPs size on the environmental geochemical behaviors, such as adsorption, (reductive) dissolution, (catalytic) oxidation, aggregation and transport, are briefly summarized, and the mechanism of the size effect is discussed. Finally, hot spots for future research of metal oxide nanoparticles related to size effects in the environment are proposed. |
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| Keywords: | nanoparticles metal oxide size effect adsorption dissolution catalytic aggregation transport environmental behaviors |
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