Global S&T Development Trend Analysis Platform of Resources and Environment
DOI | 10.1038/s41467-018-03134-x |
Developing a molecular picture of soil organic matter-mineral interactions by quantifying organo-mineral binding | |
Newcomb, C. J.1; Qafoku, N. P.1; Grate, J. W.1; Bailey, V. L.1; De Yoreo, J. J.1,2 | |
2017-08-30 | |
发表期刊 | NATURE COMMUNICATIONS |
ISSN | 2041-1723 |
出版年 | 2017 |
卷号 | 8 |
文章类型 | Article |
语种 | 英语 |
国家 | USA |
英文摘要 | Long residence times of soil organic matter have been attributed to reactive mineral surface sites that sorb organic species and cause inaccessibility due to physical isolation and chemical stabilization at the organic-mineral interface. Instrumentation for probing this interface is limited. As a result, much of the micron-and molecular-scale knowledge about organic-mineral interactions remains largely qualitative. Here we report the use of force spectroscopy to directly measure the binding between organic ligands with known chemical functionalities and soil minerals in aqueous environments. By systematically studying the role of organic functional group chemistry with model minerals, we demonstrate that chemistry of both the organic ligand and mineral contribute to values of binding free energy and that changes in pH and ionic strength produce significant differences in binding energies. These direct measurements of molecular binding provide mechanistic insights into organo-mineral interactions, which could potentially inform land-carbon models that explicitly include mineral-bound C pools. |
领域 | 资源环境 |
收录类别 | SCI-E |
WOS记录号 | WOS:000408695100013 |
WOS关键词 | GOETHITE ALPHA-FEOOH ; SURFACE COMPLEXATION ; FORCE SPECTROSCOPY ; ADSORPTION ; CLAY ; INTERFACE ; CARBON ; ACID ; MECHANISMS ; SORPTION |
WOS类目 | Multidisciplinary Sciences |
WOS研究方向 | Science & Technology - Other Topics |
URL | 查看原文 |
引用统计 | |
文献类型 | 期刊论文 |
条目标识符 | http://119.78.100.173/C666/handle/2XK7JSWQ/203723 |
专题 | 资源环境科学 |
作者单位 | 1.Pacific Northwest Natl Lab, 902 Battelle Blvd, Richland, WA 99354 USA; 2.Univ Washington, Dept Mat Sci & Engn, 302 Roberts Hall, Seattle, WA 98195 USA |
推荐引用方式 GB/T 7714 | Newcomb, C. J.,Qafoku, N. P.,Grate, J. W.,et al. Developing a molecular picture of soil organic matter-mineral interactions by quantifying organo-mineral binding[J]. NATURE COMMUNICATIONS,2017,8. |
APA | Newcomb, C. J.,Qafoku, N. P.,Grate, J. W.,Bailey, V. L.,&De Yoreo, J. J..(2017).Developing a molecular picture of soil organic matter-mineral interactions by quantifying organo-mineral binding.NATURE COMMUNICATIONS,8. |
MLA | Newcomb, C. J.,et al."Developing a molecular picture of soil organic matter-mineral interactions by quantifying organo-mineral binding".NATURE COMMUNICATIONS 8(2017). |
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