Surface Charge Density of Maghemite Nanoparticles: Role of Electrostatics in the Proton Exchange
Тип публикации: Journal Article
Дата публикации: 2007-11-29
scimago Q1
wos Q3
БС1
SJR: 0.914
CiteScore: 6.2
Impact factor: 3.2
ISSN: 19327447, 19327455
Surfaces, Coatings and Films
Electronic, Optical and Magnetic Materials
Physical and Theoretical Chemistry
General Energy
Краткое описание
In the present work, we focus on the surface charge properties of well-defined maghemite (γ-Fe2O3) nanoparticles dispersed in water. Because of the acidic properties of surface groups, the nanoparticles' surface can be positively or negatively charged depending on the pH. Consequently, there are electrostatic repulsion forces between particles that allow stabilizing the suspensions in water. Acid−base titrations of the surface groups starting from acidic, alkaline, and neutral pH are performed to access the dependence of the surface charge density with the pH. Titrations are followed by potentiometric and conductometric measurements. Simultaneous zetametry measurements by acoustophoresis are implemented. The experimental curves are analyzed using several hypotheses; in particular, we assume that the sites on the surface of the particles behave as weak diacids. The interpretation of the experimental determinations of the charge implies taking into account an electrostatic term due to the potential develope...
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Метрики
111
Всего цитирований:
111
Цитирований c 2025:
6
(5.4%)
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ГОСТ
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Lucas I. et al. Surface Charge Density of Maghemite Nanoparticles: Role of Electrostatics in the Proton Exchange // Journal of Physical Chemistry C. 2007. Vol. 111. No. 50. pp. 18568-18576.
ГОСТ со всеми авторами (до 50)
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Lucas I., Durand-Vidal S., Dubois E., Chevalet J., Turq P. Surface Charge Density of Maghemite Nanoparticles: Role of Electrostatics in the Proton Exchange // Journal of Physical Chemistry C. 2007. Vol. 111. No. 50. pp. 18568-18576.
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RIS
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TY - JOUR
DO - 10.1021/jp0743119
UR - https://doi.org/10.1021/jp0743119
TI - Surface Charge Density of Maghemite Nanoparticles: Role of Electrostatics in the Proton Exchange
T2 - Journal of Physical Chemistry C
AU - Lucas, Ivan
AU - Durand-Vidal, S.
AU - Dubois, Emmanuelle
AU - Chevalet, J
AU - Turq, P.
PY - 2007
DA - 2007/11/29
PB - American Chemical Society (ACS)
SP - 18568-18576
IS - 50
VL - 111
SN - 1932-7447
SN - 1932-7455
ER -
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BibTex (до 50 авторов)
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@article{2007_Lucas,
author = {Ivan Lucas and S. Durand-Vidal and Emmanuelle Dubois and J Chevalet and P. Turq},
title = {Surface Charge Density of Maghemite Nanoparticles: Role of Electrostatics in the Proton Exchange},
journal = {Journal of Physical Chemistry C},
year = {2007},
volume = {111},
publisher = {American Chemical Society (ACS)},
month = {nov},
url = {https://doi.org/10.1021/jp0743119},
number = {50},
pages = {18568--18576},
doi = {10.1021/jp0743119}
}
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MLA
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Lucas, Ivan, et al. “Surface Charge Density of Maghemite Nanoparticles: Role of Electrostatics in the Proton Exchange.” Journal of Physical Chemistry C, vol. 111, no. 50, Nov. 2007, pp. 18568-18576. https://doi.org/10.1021/jp0743119.