Electric potential (psi(delta) and psi(d)) at outer Helmholtz plane and midplane on the clay colloid surface with overlapping flat double layers
文献类型：期刊论文
| 作者 | Xin, J; Zhou, JM; Ji, GL; Yu, TR |
| 刊名 | JOURNAL OF COLLOID AND INTERFACE SCIENCE
 |
| 出版日期 | 2000-07-15 |
| 卷号 | 227期号:2页码:345-348 |
| 关键词 | electric potential clay colloid overlapping flat double layer |
| ISSN号 | 0021-9797 |
| 通讯作者 | Xin, J() |
| 英文摘要 | An anion negative adsorption equation in the condensed colloidal suspension with overlapping flat double layers was derived according to Gouy-Chapman theory. The electric potential at the outer Helmholtz plane (OHP), psi(delta), and the electric potential at the midplane, psi(d), were numerically solved by computer using the anion negative adsorption equation on the basis of experiments. The results showed that psi(delta) and psi(d) increase with the decrease of the distance between two clay plates, lambda, at first in the given electrolyte concentration. When lambda is smaller than 50-70 Angstrom, psi(d) remains almost unchanged while psi(delta) declines remarkably with the further decrease of lambda. The change of psi(d)/psi(delta) can explain and manifest overlapping degree of flat double layers more appropriately than psi(d) in previous works. Due to compression of the flat double layer on the clay colloid surface at increasing electrolyte concentration, the magnitude of the electrical potentials at OHP and midplane is considerably reduced at a given lambda. (C) 2000 Academic Press. |
| 收录类别 | SCI |
| WOS研究方向 | Chemistry |
| WOS类目 | Chemistry, Physical |
| 语种 | 英语 |
| WOS记录号 | WOS:000088126100011 |
| 出版者 | ACADEMIC PRESS INC |
| URI标识 | http://www.irgrid.ac.cn/handle/1471x/2559123 |
| 专题 | 南京土壤研究所 |
| 通讯作者 | Xin, J |
| 作者单位 | Chinese Acad Sci, Inst Soil Sci, Nanjing 210008, Peoples R China |
| 推荐引用方式 GB/T 7714 | Xin, J,Zhou, JM,Ji, GL,et al. Electric potential (psi(delta) and psi(d)) at outer Helmholtz plane and midplane on the clay colloid surface with overlapping flat double layers[J]. JOURNAL OF COLLOID AND INTERFACE SCIENCE,2000,227(2):345-348. |
| APA | Xin, J,Zhou, JM,Ji, GL,&Yu, TR.(2000).Electric potential (psi(delta) and psi(d)) at outer Helmholtz plane and midplane on the clay colloid surface with overlapping flat double layers.JOURNAL OF COLLOID AND INTERFACE SCIENCE,227(2),345-348. |
| MLA | Xin, J,et al."Electric potential (psi(delta) and psi(d)) at outer Helmholtz plane and midplane on the clay colloid surface with overlapping flat double layers".JOURNAL OF COLLOID AND INTERFACE SCIENCE 227.2(2000):345-348. |
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来源：南京土壤研究所
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