1
|
Botin D, Carrique F, Ruiz-Reina E, Palberg T. Non-monotonic concentration dependence of the electro-phoretic mobility of charged spheres in realistic salt free suspensions. J Chem Phys 2020; 152:244902. [PMID: 32610949 DOI: 10.1063/5.0010692] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
Abstract
Using super-heterodyne Doppler velocimetry with multiple scattering correction, we extend the optically accessible range of concentrations in experiments on colloidal electro-kinetics. Here, we measured the electro-phoretic mobility and the DC conductivity of aqueous charged sphere suspensions covering about three orders of magnitude in particle concentrations and transmissions as low as 40%. The extended concentration range for the first time allows the demonstration of a non-monotonic concentration dependence of the mobility for a single particle species. Our observations reconcile previous experimental observations made on other species over restricted concentration ranges. We compare our results to the state-of-the-art theoretical calculations using a constant particle charge and the carefully determined experimental boundary conditions as input. In particular, we consider the so-called realistic salt free conditions, i.e., we respect the release of counterions by the particles, the solvent hydrolysis, and the formation of carbonic acid from dissolved neutral CO2. We also compare our results to previous results obtained under similarly well-defined conditions. This allows identification of three distinct regions of differing density dependence. There is an ascent during the build-up of double layer overlap, which is not expected by theory, an extended plateau region in quantitative agreement with theoretical expectation based on a constant effective charge and a sudden decrease, which occurs way before the expected gradual decrease. Our observations suggest a relation of the non-monotonic behavior to a decrease in particle charge, and we tentatively discuss possibly underlying mechanisms.
Collapse
Affiliation(s)
- Denis Botin
- Institute of Physics, Johannes Gutenberg University, 55128 Mainz, Germany
| | - Felix Carrique
- Institute Carlos I for Theoretical and Computational Physics (iC1), Departamento de Física Aplicada I, Facultad de Ciencias, Universidad de Málaga, Campus de Teatinos, 29071 Málaga, Spain
| | - Emilio Ruiz-Reina
- Institute Carlos I for Theoretical and Computational Physics (iC1), Departamento de Física Aplicada II, Escuela de Ingenierías Industriales, Universidad de Málaga, Campus de Teatinos, 29071 Málaga, Spain
| | - Thomas Palberg
- Institute of Physics, Johannes Gutenberg University, 55128 Mainz, Germany
| |
Collapse
|
2
|
Pyell U, Jalil AH, Pfeiffer C, Pelaz B, Parak WJ. Characterization of gold nanoparticles with different hydrophilic coatings via capillary electrophoresis and Taylor dispersion analysis. Part I: Determination of the zeta potential employing a modified analytic approximation. J Colloid Interface Sci 2015; 450:288-300. [DOI: 10.1016/j.jcis.2015.03.006] [Citation(s) in RCA: 52] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/28/2014] [Revised: 02/20/2015] [Accepted: 03/06/2015] [Indexed: 01/06/2023]
|
3
|
Drying dissipative structures of spindle-shaped hematite particles coated with polymer brush. Colloid Polym Sci 2014. [DOI: 10.1007/s00396-014-3164-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
|
4
|
Cationic gel crystals and amorphous solids of lightly cross-linked poly(2-vinylpyridine) spheres in the deionized aqueous suspension. Colloid Polym Sci 2014. [DOI: 10.1007/s00396-014-3228-6] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
|
5
|
Okubo T. Steady Flow Viscosity and Rigidity of Colloidal Spheres in Deionized Suspensions. ACTA ACUST UNITED AC 2014. [DOI: 10.1002/bbpc.198800116] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
|
6
|
Colloidal crystallization of spindle-shaped hematite particles coated with polymer brush in deionized aqueous suspension. Colloid Polym Sci 2013. [DOI: 10.1007/s00396-013-3136-1] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
|
7
|
Distorted colloidal crystal of similar-sized aggregates (1.5 μm in diameter) of nano-sized diamond particles (4 nm in diameter). Colloid Polym Sci 2013. [DOI: 10.1007/s00396-013-2896-y] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
|
8
|
Cationic gel crystals of lightly cross-linked poly(2-vinylpyridine) spheres (170∼180 nm in diameter) in the deionized aqueous suspension. Colloid Polym Sci 2013. [DOI: 10.1007/s00396-013-3000-3] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
|
9
|
Palberg T, Köller T, Sieber B, Schweinfurth H, Reiber H, Nägele G. Electro-kinetics of charged-sphere suspensions explored by integral low-angle super-heterodyne laser Doppler velocimetry. JOURNAL OF PHYSICS. CONDENSED MATTER : AN INSTITUTE OF PHYSICS JOURNAL 2012; 24:464109. [PMID: 23113974 DOI: 10.1088/0953-8984/24/46/464109] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/01/2023]
Abstract
We investigated the flow behaviour of colloidal charged-sphere suspensions using a newly designed integral low-angle super-heterodyne laser Doppler velocimetry instrument, which combines the advantages of several previous approaches. Sample conditions ranged from strong electrostatic interactions with pronounced short-range order to individual particles with no spatial correlations. The obtained power spectra correspond to diffusion broadened velocity distributions across the complete sample cross section. The excellent performance of the instrument is highlighted in detail by the example of electro-kinetic flow of suspensions in a closed cell of a rectangular cross section. We demonstrate the excellent performance of our approach with the example of electro-phoretic-electro-osmotic experiments, showing that a comprehensive flow characterization becomes possible by analysing the measured electro-kinetic mobilities, the flow-profile, an effective diffusion coefficient and the integrated scattering density. We briefly discuss present limitations, possible extensions and interesting applications in other fields.
Collapse
Affiliation(s)
- Thomas Palberg
- Institut für Physik, Johannes Gutenberg Universität, D-55128 Mainz, Germany.
| | | | | | | | | | | |
Collapse
|
10
|
Okubo T, Fujii S, Aono K, Nakamura Y, Tsuchida A. Colloidal crystallization of cationic gel spheres of lightly cross-linked poly(2-vinylpyridine) in the deionized aqueous suspension. Colloid Polym Sci 2012. [DOI: 10.1007/s00396-012-2850-4] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
|
11
|
Crystal structure of thermosensitive gel spheres of poly(N-isopropylacrylamide) in the deionized aqueous suspension as studied by the static light-scattering measurements. Colloid Polym Sci 2012. [DOI: 10.1007/s00396-012-2770-3] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
|
12
|
Static and dynamic light-scattering of colloidal crystals of monodispersed polystyrene spheres. ACTA ACUST UNITED AC 2010. [DOI: 10.1002/bbpc.19961000627] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
|
13
|
Suspension Structures of Deionized Colloidal Silica Spheres As Studied by the Reflection and Transmission Spectroscopy. ACTA ACUST UNITED AC 2010. [DOI: 10.1002/bbpc.19920960110] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
|
14
|
Okubo T, Kimura K, Tsuchida A. Drying dissipative patterns of the colloidal crystals of silica spheres in an dc-electric field. Colloids Surf B Biointerfaces 2007; 56:201-9. [PMID: 17126538 DOI: 10.1016/j.colsurfb.2006.10.012] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/04/2006] [Accepted: 10/01/2006] [Indexed: 11/16/2022]
Abstract
Drying dissipative structural patterns of the colloidal crystals of silica spheres were studied under an dc-electric field. Platinum plate electrodes of anode and cathode were set on a cover glass. The broad hills accumulated with the spheres were observed at the outer edges of the dried film without and also with the electric fields. The column-like structures were formed by the electric flux, and movement of the spheres took place toward anode. The dried film kept colloidal crystal structure, where the nearest-neighbored spheres contact each other more compactly in the areas closer to the anode. Drying times needed for the complete dryness of the suspensions decreased as the strength of the electric field increased. Addition of sodium chloride to the suspensions retarded the movement of spheres toward the anode substantially.
Collapse
Affiliation(s)
- Tsuneo Okubo
- Institute for Colloidal Organization, Hatoyama 3-1-112, Uji, Kyoto 611-0012, Japan.
| | | | | |
Collapse
|
15
|
Kimura H, Niimi H, Tsuchida A, Okubo T. Importance of the electrical double layers for the rheological properties of colloidal liquids. Colloid Polym Sci 2005. [DOI: 10.1007/s00396-004-1247-4] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
|
16
|
Hessinger D, Evers M, Palberg T. Independent ion migration in suspensions of strongly interacting charged colloidal spheres. PHYSICAL REVIEW. E, STATISTICAL PHYSICS, PLASMAS, FLUIDS, AND RELATED INTERDISCIPLINARY TOPICS 2000; 61:5493-5506. [PMID: 11031602 DOI: 10.1103/physreve.61.5493] [Citation(s) in RCA: 28] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/18/1999] [Indexed: 05/23/2023]
Abstract
We report on systematic measurements of the low-frequency conductivity sigma in aqueous suspensions of highly charged colloidal spheres. Sample preparation in a closed tubing system results in precisely controlled number densities of 10(16) m-3 < or = n < or = 10(19) m-3 (packing fractions of 10(-7) < or = phi < or = 10(-2)) and electrolyte concentrations of 10 < or = c < or = 10(-3) mol l-1. Due to long-range Coulomb repulsion, some of the systems show a pronounced fluid or crystalline order. Under deionized conditions we find sigma to depend linearly on the packing fraction with no detectable influence of the phase transitions. Further, at constant packing fraction sigma increases sublinearly with the increasing number of dissociable surface groups N. As a function of c the conductivity shows pronounced differences depending on the kind of electrolyte used. We propose a simple yet powerful model based on the independent migration of all species present and the additivity of the respective conductivity contributions. It takes account of small ion macro-ion interactions in terms of an effectively transported charge. The model successfully describes our qualitatively complex experimental observations. It further facilitates quantitative estimates of sigma over a wide range of particle and experimental parameters.
Collapse
Affiliation(s)
- D Hessinger
- Universitat Mainz, Institut fur Physik, Germany
| | | | | |
Collapse
|
17
|
|
18
|
Okubo T, Fujita H. Phase diagram of alloy crystal in the exhaustively deionized suspensions of binary mixtures of colloidal spheres. Colloid Polym Sci 1996. [DOI: 10.1007/bf00654057] [Citation(s) in RCA: 32] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
|
19
|
Okubo T, Kiriyama K, Nemoto N, Hashimoto H. Static and dynamic light-scattering of colloidal gases, liquids and crystals. Colloid Polym Sci 1996. [DOI: 10.1007/bf00663441] [Citation(s) in RCA: 28] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
|
20
|
Okubo T, Fujita H, Kiriyama K, Yamaoka H. Colloidal single crystals of silica spheres in the presence of simple- and poly-electrolytes, and ionic detergents. Colloid Polym Sci 1996. [DOI: 10.1007/bf00658912] [Citation(s) in RCA: 15] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
|
21
|
Okubo T, Kiriyama K, Yamaoka H, Nemoto N. Dynamic properties of giant colloidal single crystals. Dynamic light scattering of monodispersed polystyrene spheres (192 nm in diameter) in deionized suspension. Colloids Surf A Physicochem Eng Asp 1995. [DOI: 10.1016/0927-7757(95)03210-5] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/17/2022]
|
22
|
Palberg T, Mönch W, Bitzer F, Piazza R, Bellini T. Freezing transition for colloids with adjustable charge: A test of charge renormalization. PHYSICAL REVIEW LETTERS 1995; 74:4555-4558. [PMID: 10058536 DOI: 10.1103/physrevlett.74.4555] [Citation(s) in RCA: 52] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/23/2023]
|
23
|
Okubo T. Rigidity of colloidal crystals as studied by the diffusion equilibrium method. J Chem Phys 1995. [DOI: 10.1063/1.469024] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
|
24
|
Okubo T. Another look at the melting temperature of colloidal crystals in the completely deionized suspension. Colloid Polym Sci 1994. [DOI: 10.1007/bf00659457] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
|
25
|
Large single crystals of colloidal silica spheres appearing in deionized and diluted suspension. Colloid Polym Sci 1993. [DOI: 10.1007/bf00651821] [Citation(s) in RCA: 31] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
|
26
|
|
27
|
Okubo T. Melting temperature of colloidal crystals of monodisperse silica spheres. J Chem Phys 1992. [DOI: 10.1063/1.462076] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
|
28
|
|
29
|
Deggelmann M, Palberg T, Hagenbüchle M, Maier EE, Krause R, Graf C, Weber R. Electrokinetic properties of aqueous suspensions of polystyrene spheres in the gas and liquid-like phase. J Colloid Interface Sci 1991. [DOI: 10.1016/0021-9797(91)90265-a] [Citation(s) in RCA: 38] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
|
30
|
Okubo T. Counter-ion specificity in colloidal ‘crystals’ and ‘liquids’ as studied by transmitted-light spectroscopy. ACTA ACUST UNITED AC 1991. [DOI: 10.1039/ft9918701361] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
|
31
|
On the conversion of experimental electrokinetic data into double layer characteristics in solid-liquid interfaces. Adv Colloid Interface Sci 1991. [DOI: 10.1016/0001-8686(91)80052-l] [Citation(s) in RCA: 51] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
|
32
|
Okubo T. Alloy structures in binary mixtures of highly deionized colloids at sedimentation equilibrium. J Chem Phys 1990. [DOI: 10.1063/1.459309] [Citation(s) in RCA: 19] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
|
33
|
|
34
|
|
35
|
Counter ion condensation on mixed cationic/nonionic micellar systems: Bjerrum's electrostatic condition. Colloid Polym Sci 1990. [DOI: 10.1007/bf01410429] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
|
36
|
Okubo T. Microscopic observation of gas‐like, liquid‐like, and crystal‐like distributions of deionized colloidal spheres and the importance of the Debye‐screening length. J Chem Phys 1989. [DOI: 10.1063/1.455983] [Citation(s) in RCA: 18] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
|
37
|
Okubo T. Determination of the effective charge numbers of colloidal spheres by conductance measurements. J Colloid Interface Sci 1988. [DOI: 10.1016/0021-9797(88)90002-1] [Citation(s) in RCA: 46] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
|
38
|
Okubo T. Microscopic observation of ordered colloids in sedimentation equilibrium and importance of Debye‐screening length. VII. Colloidal silica spheres (specific gravity=1.58). J Chem Phys 1988. [DOI: 10.1063/1.454444] [Citation(s) in RCA: 19] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
|
39
|
Okubo T. Microscopic observation of ordered colloids in sedimentation equilibrium and important role of Debye‐screening length. VI. Organic solvent aqueous mixtures for heavy and monodisperse spheres (specific gravity=1.50). J Chem Phys 1988. [DOI: 10.1063/1.454085] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
|