Dissolved organic matter-mediated reduction of ionic Au(III) to elemental Au nanoparticles and their growth to visible granules
文献类型：期刊论文
| 作者 | Chen, Ying; Guo, Yingying; Liu, Guangliang; Song, Maoyong ; Cai, Yong; Yin, Yongguang
|
| 刊名 | CHINESE CHEMICAL LETTERS
 |
| 出版日期 | 2020-07 |
| 卷号 | 31期号:7页码:1970-1973 |
| 关键词 | Gold granule Gold nanoparticle Dissolved organic matter Photochemical reduction Mineralization |
| ISSN号 | 1001-8417 |
| 英文摘要 | The biogeochemical transformation of gold (Au), i.e. its dissolution and re-precipitation, is critical in supergene transport of Au and formation of Au granules. Besides biogenic reduction, the formation Au granules can also be driven by chemical processes. Previous studies have showed the formation of Au nanoparticles (AuNPs) from ionic Au(III) can be mediated by dissolved organic matter under sunlight. In this letter, we further demonstrated that these AuNPs can further slowly (in years) grow into visible Au granules. Different sized nano-flower and fractal dendrite-like branched gold structures (from tens of nanometres to over 100 mu m) were observed in the Au granule sample. This growth of AuNPs into visible Au granules may play a critical role in the supergene mineralization and enrichment of secondary Au and drive the biogeochemical cycle of Au. (C) 2019 Chinese Chemical Society and Institute of Materia Medica, Chinese Academy of Medical Sciences. Published by Elsevier B.V. All rights reserved. |
| 源URL | [http://ir.rcees.ac.cn/handle/311016/44659]  |
| 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 | Chen, Ying,Guo, Yingying,Liu, Guangliang,et al. Dissolved organic matter-mediated reduction of ionic Au(III) to elemental Au nanoparticles and their growth to visible granules[J]. CHINESE CHEMICAL LETTERS,2020,31(7):1970-1973. |
| APA | Chen, Ying,Guo, Yingying,Liu, Guangliang,Song, Maoyong,Cai, Yong,&Yin, Yongguang.(2020).Dissolved organic matter-mediated reduction of ionic Au(III) to elemental Au nanoparticles and their growth to visible granules.CHINESE CHEMICAL LETTERS,31(7),1970-1973. |
| MLA | Chen, Ying,et al."Dissolved organic matter-mediated reduction of ionic Au(III) to elemental Au nanoparticles and their growth to visible granules".CHINESE CHEMICAL LETTERS 31.7(2020):1970-1973. |
入库方式： OAI收割
来源：生态环境研究中心
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