Incorporation of Pb(ii) into hematite during ferrihydrite transformation
文献类型：期刊论文
| 作者 | Lu, Yang5; Hu, Shiwen5; Liang, Zheng4; Zhu, Mengqiang3; Wang, Zimeng2; Wang, Xiaoming1; Liang, Yuzhen5; Dang, Zhi5; Shi, Zhenqing5 |
| 刊名 | ENVIRONMENTAL SCIENCE-NANO
 |
| 出版日期 | 2020-03-01 |
| 卷号 | 7期号:3页码:829-841 |
| ISSN号 | 2051-8153 |
| DOI | 10.1039/c9en01355e |
| 通讯作者 | Shi, Zhenqing(zqshi@scut.edu.cn) |
| 英文摘要 | Ferrihydrite is ubiquitous in natural environments, and its transformation significantly influences the fate of heavy metals. Although Pb(ii) adsorption on iron oxides has been extensively studied, there is still a knowledge gap on the fate of Pb during the dynamic processes of iron oxide transformation. In this study, a set of wet chemistry experiments, spherical aberration corrected scanning transmission electron microscopy (Cs-STEM) integrated with energy dispersive X-ray spectroscopy (EDS), X-ray diffraction (XRD), and X-ray absorption spectroscopy (XAS) were used to unravel Pb interactions with iron oxides during ferrihydrite transformation processes under abiotic conditions. Wet chemistry experiments, STEM-EDS elemental mapping and line scans, and quantitative analysis suggested that Pb penetrated into hematite nanoparticles during the transformation processes. STEM analysis at sub-nanoscales, XRD fine scans, and XAS analysis provided evidence of Pb incorporation into the crystal structures of hematite nanoparticles, in which Pb distributed along the zone axis and enlarged the lattice distance of hematite. These results advanced our understanding of the dynamic interactions of Pb with iron oxides by offering new perspectives about the critical roles of chemical speciation, nano-scale spatial distribution, and atomic coordination environments in controlling the geochemical dynamics of heavy metals. |
| WOS关键词 | ZERO-VALENT IRON ; URANIUM-MINE TAILINGS ; 2-LINE FERRIHYDRITE ; LEAD(II) SORPTION ; HUMIC-ACID ; HIGH PH ; CRYSTALLIZATION ; NANOPARTICLES ; ADSORPTION ; KINETICS |
| 资助项目 | National Natural Science Foundation of China[41573090] ; Fundamental Research Funds for the Central Universities[2018PY10] ; Natural Science Foundation of Guangdong[2018A030310394] |
| WOS研究方向 | Chemistry ; Environmental Sciences & Ecology ; Science & Technology - Other Topics |
| 语种 | 英语 |
| 出版者 | ROYAL SOC CHEMISTRY |
| WOS记录号 | WOS:000522036000006 |
| 资助机构 | National Natural Science Foundation of China ; Fundamental Research Funds for the Central Universities ; Natural Science Foundation of Guangdong |
| 源URL | [http://ir.giec.ac.cn/handle/344007/26959]  |
| 专题 | 中国科学院广州能源研究所 |
| 通讯作者 | Shi, Zhenqing |
| 作者单位 | 1.Huazhong Agr Univ, Key Lab Arable Land Conservat Middle & Lower Reac, Minist Agr & Rural Affairs, Coll Resources & Environm, Wuhan 430070, Peoples R China 2.Fudan Univ, Dept Environm Sci & Engn, Shanghai 200433, Peoples R China 3.Univ Wyoming, Dept Ecosyst Sci & Management, Laramie, WY 82071 USA 4.Chinese Acad Sci, Guangzhou Inst Energy Convers, Guangzhou 510640, Guangdong, Peoples R China 5.South China Univ Technol, Key Lab Pollut Control & Ecosyst Restorat Ind Clu, Minist Educ, Sch Environm & Energy, Guangzhou 510006, Guangdong, Peoples R China |
| 推荐引用方式 GB/T 7714 | Lu, Yang,Hu, Shiwen,Liang, Zheng,et al. Incorporation of Pb(ii) into hematite during ferrihydrite transformation[J]. ENVIRONMENTAL SCIENCE-NANO,2020,7(3):829-841. |
| APA | Lu, Yang.,Hu, Shiwen.,Liang, Zheng.,Zhu, Mengqiang.,Wang, Zimeng.,...&Shi, Zhenqing.(2020).Incorporation of Pb(ii) into hematite during ferrihydrite transformation.ENVIRONMENTAL SCIENCE-NANO,7(3),829-841. |
| MLA | Lu, Yang,et al."Incorporation of Pb(ii) into hematite during ferrihydrite transformation".ENVIRONMENTAL SCIENCE-NANO 7.3(2020):829-841. |
入库方式： OAI收割
来源：广州能源研究所
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