Cadmium Isotope Fractionation during Adsorption onto Edge Sites and Vacancies in Phyllomanganate
文献类型：期刊论文
| 作者 | Yin, Hui2; Yan, Xinran2; Zhu, Chuanwei3; Kwon, Kideok D.4; Gu, Xueyuan5; Zhao, Wei6; Lanson, Bruno7; Li, Wei9; Ma, Jingyuan8; Li, Yan10 |
| 刊名 | ENVIRONMENTAL SCIENCE & TECHNOLOGY
 |
| 出版日期 | 2024-07-18 |
| 卷号 | 58期号:30页码:13498-13508 |
| 关键词 | phyllomanganate cadmium adsorption isotopefractionation vacancies edge sites |
| ISSN号 | 0013-936X |
| DOI | 10.1021/acs.est.4c03808 |
| 英文摘要 | Cadmium (Cd) geochemical behavior is strongly influenced by its adsorption onto natural phyllomanganates, which contain both layer edge sites and vacancies; however, Cd isotope fractionation mechanisms at these sites have not yet been addressed. In the present work, Cd isotope fractionation during adsorption onto hexagonal (containing both types of sites) and triclinic birnessite (almost only edge sites) was investigated using a combination of batch adsorption experiments, extended X-ray absorption fine structure (EXAFS) spectroscopy, surface complexation modeling, and density functional theory (DFT) calculations. Light Cd isotopes are preferentially enriched on solid surfaces, and the isotope fractionation induced by Cd2+ adsorption on edge sites (Delta 1(14/110)Cd(edge-solution) = -1.54 +/- 0.11 parts per thousand) is smaller than that on vacancies (Delta Cd-114/110(vacancy-solution) = -0.71 +/- 0.21 parts per thousand), independent of surface coverage or pH. Both Cd K-edge EXAFS and DFT results indicate the formation of double corner-sharing complexes on layer edge sites and mainly triple cornering-sharing complexes on vacancies. The distortion of both complexes results in the negative isotope fractionation onto the solids, and the slightly longer first Cd-O distances and a smaller number of nearest Mn atoms around Cd at edge sites probably account for the larger fractionation magnitude compared to that of vacancies. These results provide deep insights into Cd isotope fractionation mechanisms during interactions with phyllomanganates. |
| 资助项目 | National Natural Science Foundations of China[42077015] ; Fundamental Research Funds for the Central Universities[103-510320036] |
| WOS研究方向 | Engineering ; Environmental Sciences & Ecology |
| 语种 | 英语 |
| WOS记录号 | WOS:001272787800001 |
| 出版者 | AMER CHEMICAL SOC |
| 源URL | [http://119.78.100.198/handle/2S6PX9GI/41989]  |
| 专题 | 中科院武汉岩土力学所 |
| 通讯作者 | Yin, Hui; Zhu, Chuanwei |
| 作者单位 | 1.Chinese Acad Sci, Inst Rock & Soil Mech, State Key Lab Geomech & Geotech Engn, Wuhan 430071, Peoples R China 2.Huazhong Agr Univ, Coll Resources & Environm, Hubei Key Lab Soil Environm & Pollut Remediat, Wuhan 430070, Peoples R China 3.Changan Univ, Sch Earth Sci & Resources, Xian 710054, Peoples R China 4.Kangwon Natl Univ, Dept Geol, Kangwon Do 24347, South Korea 5.Nanjing Univ, Sch Environm, State Key Lab Pollut Control & Resource Reuse, Nanjing 210023, Peoples R China 6.Northwest A&F Univ, State Key Lab Soil Eros & Dryland Farming Loess Pl, Yangling 712100, Shaanxi, Peoples R China 7.Univ Gustave Eiffel, Univ Grenoble Alpes, Univ Savoie Mont Blanc, CNRS,IRD, F-38000 Grenoble, France 8.Chinese Acad Sci, Shanghai Inst Appl Phys, Shanghai Synchrotron Radiat Facil, Shanghai 201204, Peoples R China 9.Nanjing Univ, Minist Educ, Sch Earth Sci & Engn, Key Lab Surficial Geochem, Nanjing 210023, Peoples R China 10.Peking Univ, Sch Earth & Space Sci, Beijing Key Lab Mineral Environm Funct, Beijing 100871, Peoples R China |
| 推荐引用方式 GB/T 7714 | Yin, Hui,Yan, Xinran,Zhu, Chuanwei,et al. Cadmium Isotope Fractionation during Adsorption onto Edge Sites and Vacancies in Phyllomanganate[J]. ENVIRONMENTAL SCIENCE & TECHNOLOGY,2024,58(30):13498-13508. |
| APA | Yin, Hui.,Yan, Xinran.,Zhu, Chuanwei.,Kwon, Kideok D..,Gu, Xueyuan.,...&Liu, Fan.(2024).Cadmium Isotope Fractionation during Adsorption onto Edge Sites and Vacancies in Phyllomanganate.ENVIRONMENTAL SCIENCE & TECHNOLOGY,58(30),13498-13508. |
| MLA | Yin, Hui,et al."Cadmium Isotope Fractionation during Adsorption onto Edge Sites and Vacancies in Phyllomanganate".ENVIRONMENTAL SCIENCE & TECHNOLOGY 58.30(2024):13498-13508. |
入库方式： OAI收割
来源：武汉岩土力学研究所
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