Photoreduction and Stabilization Capability of Molecular Weight Fractionated Natural Organic Matter in Transformation of Silver Ion to Metallic Nanoparticle
文献类型：期刊论文
| 作者 | Yin, Yongguang ; Shen, Mohai ; Zhou, Xiaoxia ; Yu, Sujuan ; Chao, Jingbo ; Liu, Jingfu ; Jiang, Guibin |
| 刊名 | ENVIRONMENTAL SCIENCE & TECHNOLOGY
 |
| 出版日期 | 2014 |
| 卷号 | 48期号:16页码:9366-9373 |
| ISSN号 | 0013-936X |
| 中文摘要 | Photoinduced reduction of silver ion (Ag+) to silver nanoparticles (AgNPs) by dissolved organic matter (DOM) plays a crucial role in the transformation and transport of engineered AgNPs and Ag+ in aquatic environments. DOM is a mixture of natural polymers with wide molecular weight (MW) distribution, and the roles of specific components of DOM in the photoreduction of Ag+ to AgNPs are still not understood. In this study, MW fractionated natural organic matter (M-f-NOM) were investigated for their roles on the photoreduction process and stabilization of the formed AgNPs. This photoinduced reduction process depends highly on pH, concentration of Ag+ and NOM, light quality, and the MW of M-f-NOM. Monochromatic radiation and light attenuation correction suggested that the difference of M-f-NOM on reduction was mainly ascribed to the differential light attenuation of M-f-NOM rather than the "real" reductive ability. More importantly, compared with low MW fractions, the high MW M-f-NOMs exhibit drastically higher capability in stabilizing the photosynthesized AgNPs against Ca2+-induced aggregation. This finding is important for a better understanding of the differential roles of M-f-NOM in the transformation and transport of Ag+ and engineered AgNPs in DOM-rich surface water. |
| WOS记录号 | WOS:000340701800052 |
| 公开日期 | 2015-03-24 |
| 源URL | [http://ir.rcees.ac.cn/handle/311016/9426]  |
| 专题 | 生态环境研究中心_环境化学与生态毒理学国家重点实验室 |
| 推荐引用方式 GB/T 7714 | Yin, Yongguang,Shen, Mohai,Zhou, Xiaoxia,et al. Photoreduction and Stabilization Capability of Molecular Weight Fractionated Natural Organic Matter in Transformation of Silver Ion to Metallic Nanoparticle[J]. ENVIRONMENTAL SCIENCE & TECHNOLOGY,2014,48(16):9366-9373. |
| APA | Yin, Yongguang.,Shen, Mohai.,Zhou, Xiaoxia.,Yu, Sujuan.,Chao, Jingbo.,...&Jiang, Guibin.(2014).Photoreduction and Stabilization Capability of Molecular Weight Fractionated Natural Organic Matter in Transformation of Silver Ion to Metallic Nanoparticle.ENVIRONMENTAL SCIENCE & TECHNOLOGY,48(16),9366-9373. |
| MLA | Yin, Yongguang,et al."Photoreduction and Stabilization Capability of Molecular Weight Fractionated Natural Organic Matter in Transformation of Silver Ion to Metallic Nanoparticle".ENVIRONMENTAL SCIENCE & TECHNOLOGY 48.16(2014):9366-9373. |
入库方式： OAI收割
来源：生态环境研究中心
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