Model charged cylindrical nanopore in a colloidal dispersion: charge reversal, overcharging and double overcharging
Using the hypernetted-chain/mean spherical approximation (HNC/MSA) integral equations we study the electrical double layer inside and outside a model charged cylindrical vesicle (nanopore) immersed into a primitive model macroions solution, so that the macroions are only present outside the nanopor...
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| Datum: | 2017 |
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Інститут фізики конденсованих систем НАН України
2017
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| Schriftenreihe: | Condensed Matter Physics |
| Online Zugang: | http://dspace.nbuv.gov.ua/handle/123456789/157003 |
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| Zitieren: | Model charged cylindrical nanopore in a colloidal dispersion: charge reversal, overcharging and double overcharging / E. González-Tovar, M. Lozada-Cassou // Condensed Matter Physics. — 2017. — Т. 20, № 3. — С. 33604: 1–10. — Бібліогр.: 47 назв. — англ. |
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irk-123456789-1570032019-06-20T01:27:18Z Model charged cylindrical nanopore in a colloidal dispersion: charge reversal, overcharging and double overcharging González-Tovar, E. Lozada-Cassou, M. Using the hypernetted-chain/mean spherical approximation (HNC/MSA) integral equations we study the electrical double layer inside and outside a model charged cylindrical vesicle (nanopore) immersed into a primitive model macroions solution, so that the macroions are only present outside the nanopore, i.e., the vesicle wall is impermeable only to the external macroions. We calculate the ionic and local linear charge density profiles inside and outside the vesicle, and find that the correlation between the inside and outside ionic distributions causes the phenomena of overcharging (also referred to as surface charge amplification) and/or charge reversal. This is the first time overcharging is predicted in an electrical double layer of cylindrical geometry. We also report the new phenomenon of double overcharging. The present results can be of consequence for relevant systems in physical-chemistry, energy storage and biology, e.g., nanofilters, capacitors and cell membranes. Використовуючи гiпернет-ланцюгове/середньо-сферичне наближення iнтегральних рiвнянь, ми вивчаємо подвiйний електричний шар всерединi i зовнi модельної зарядженої цилiндричної бульбашки (нанопори), зануреної в примiтивну модель розчину макроiонiв таким чином, що макроiони присутнi лише зовнi нанопори, тобто стiнка бульбашки є проникною лише для зовнiшнiх макроiонiв. Ми обчислюємо профiлi iонної густини i локальної лiнiйної зарядової густини всерединi i зовнi бульбашки i знаходимо, що кореляцiя мiж внутрiшнiм i зовнiшнiм розподiлами спричинює явище надмiрного зарядження (також вiдоме як збiльшення поверхневого заряду) i/або зарядоiнварiантнiсть. Це вперше, коли явище надмiрного зарядження прогнозується в електричному подвiйному шарi цилiндричної геометрiї. Ми також повiдомляємо про нове явище подвiйного надмiрного зарядження. Представленi результати можуть мати значення для пов’язаних систем у фiзичнiй хiмiї, для збереження енергiї, в бiологiї, а саме, для нанофiльтрiв, конденсаторiв i клiтинних мембран. 2017 Article Model charged cylindrical nanopore in a colloidal dispersion: charge reversal, overcharging and double overcharging / E. González-Tovar, M. Lozada-Cassou // Condensed Matter Physics. — 2017. — Т. 20, № 3. — С. 33604: 1–10. — Бібліогр.: 47 назв. — англ. 1607-324X PACS: 68.08.Bc, 87.15kt, 82.47.Aa DOI:10.5488/CMP.20.33604 arXiv:1710.01082 http://dspace.nbuv.gov.ua/handle/123456789/157003 en Condensed Matter Physics Інститут фізики конденсованих систем НАН України |
| institution |
Digital Library of Periodicals of National Academy of Sciences of Ukraine |
| collection |
DSpace DC |
| language |
English |
| description |
Using the hypernetted-chain/mean spherical approximation (HNC/MSA) integral equations we study the electrical double layer inside and outside a model charged cylindrical vesicle (nanopore) immersed into a primitive
model macroions solution, so that the macroions are only present outside the nanopore, i.e., the vesicle wall
is impermeable only to the external macroions. We calculate the ionic and local linear charge density profiles
inside and outside the vesicle, and find that the correlation between the inside and outside ionic distributions
causes the phenomena of overcharging (also referred to as surface charge amplification) and/or charge reversal. This is the first time overcharging is predicted in an electrical double layer of cylindrical geometry. We also
report the new phenomenon of double overcharging. The present results can be of consequence for relevant
systems in physical-chemistry, energy storage and biology, e.g., nanofilters, capacitors and cell membranes. |
| format |
Article |
| author |
González-Tovar, E. Lozada-Cassou, M. |
| spellingShingle |
González-Tovar, E. Lozada-Cassou, M. Model charged cylindrical nanopore in a colloidal dispersion: charge reversal, overcharging and double overcharging Condensed Matter Physics |
| author_facet |
González-Tovar, E. Lozada-Cassou, M. |
| author_sort |
González-Tovar, E. |
| title |
Model charged cylindrical nanopore in a colloidal dispersion: charge reversal, overcharging and double overcharging |
| title_short |
Model charged cylindrical nanopore in a colloidal dispersion: charge reversal, overcharging and double overcharging |
| title_full |
Model charged cylindrical nanopore in a colloidal dispersion: charge reversal, overcharging and double overcharging |
| title_fullStr |
Model charged cylindrical nanopore in a colloidal dispersion: charge reversal, overcharging and double overcharging |
| title_full_unstemmed |
Model charged cylindrical nanopore in a colloidal dispersion: charge reversal, overcharging and double overcharging |
| title_sort |
model charged cylindrical nanopore in a colloidal dispersion: charge reversal, overcharging and double overcharging |
| publisher |
Інститут фізики конденсованих систем НАН України |
| publishDate |
2017 |
| url |
http://dspace.nbuv.gov.ua/handle/123456789/157003 |
| citation_txt |
Model charged cylindrical nanopore in a colloidal dispersion: charge reversal, overcharging and double overcharging / E. González-Tovar, M. Lozada-Cassou // Condensed Matter Physics. — 2017. — Т. 20, № 3. — С. 33604: 1–10. — Бібліогр.: 47 назв. — англ. |
| series |
Condensed Matter Physics |
| work_keys_str_mv |
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2025-07-14T09:21:06Z |
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2025-07-14T09:21:06Z |
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