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Journal articles on the topic 'Colloidal agglomeration'

Author: Grafiati

Published: 25 May 2024

Last updated: 31 July 2025

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1

Rezvani, Azita, Alexander Kichigin, Benjamin Apeleo Zubiri, Erdmann Spiecker, and Doris Segets. "Insights into Stability and Selective Agglomeration in Binary Mixtures of Colloids: A Study on Gold Nanoparticles and Ultra-Small Quantum Dots." Powders 4, no. 1 (2025): 9. https://doi.org/10.3390/powders4010009.

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Controlling the stability of colloidal nanoparticles in multicomponent systems is crucial for advancing formulations and separation processes. This study investigates the selective agglomeration approach for binary colloidal mixtures, providing both fundamental insights into stability/agglomeration mechanisms and a scalable separation strategy. First, we established a binary model system comprising gold nanoparticles (Au NPs) and ZnS quantum dots (QDs) to assess interparticle interactions. UV-visible spectroscopy revealed that impurities released from ZnS QDs, particularly thiol-based ligands

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Osaci, Mihaela, and Matteo Cacciola. "Influence of the magnetic nanoparticle coating on the magnetic relaxation time." Beilstein Journal of Nanotechnology 11 (August 12, 2020): 1207–16. http://dx.doi.org/10.3762/bjnano.11.105.

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Colloidal systems consisting of monodomain superparamagnetic nanoparticles have been used in biomedical applications, such as the hyperthermia treatment for cancer. In this type of colloid, called a nanofluid, the nanoparticles tend to agglomeration. It has been shown experimentally that the nanoparticle coating plays an important role in the nanoparticle dispersion stability and biocompatibility. However, theoretical studies in this field are lacking. In addition, the ways in which the nanoparticle coating influences the magnetic properties of the nanoparticles are not yet understood. In orde

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Maillette, Sébastien, Caroline Peyrot, Tapas Purkait, Muhammad Iqbal, Jonathan G. C. Veinot, and Kevin J. Wilkinson. "Heteroagglomeration of nanosilver with colloidal SiO2 and clay." Environmental Chemistry 14, no. 1 (2017): 1. http://dx.doi.org/10.1071/en16070.

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Environmental contextThe fate of nanomaterials in the environment is related to their colloidal stability. Although numerous studies have examined their homoagglomeration, their low concentration and the presence of high concentrations of natural particles implies that heteroagglomeration rather than homoagglomeration is likely to occur under natural conditions. In this paper, two state-of-the art analytical techniques were used to identify the conditions under which nanosilver was most likely to form heteroagglomerates in natural waters. AbstractThe environmental risk of nanomaterials will de

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Marć, Maciej, Andrzej Drzewiński, Wiktor W. Wolak, Lidia Najder-Kozdrowska, and Mirosław R. Dudek. "Filtration of Nanoparticle Agglomerates in Aqueous Colloidal Suspensions Exposed to an External Radio-Frequency Magnetic Field." Nanomaterials 11, no. 7 (2021): 1737. http://dx.doi.org/10.3390/nano11071737.

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The study investigated the phenomenon of the fast aggregation of single-domain magnetic iron oxide nanoparticles in stable aqueous colloidal suspensions due to the presence of a radio-frequency (RF) magnetic field. Single-domain nanoparticles have specific magnetic properties, especially the unique property of absorbing the energy of such a field and releasing it in the form of heat. The localized heating causes the colloid to become unstable, leading to faster agglomeration of nanoparticles and, consequently, to rapid sedimentation. It has been shown that the destabilization of a stable magne

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Solodova O.V., Sokolov A.E., Ivanova O.S., et al. "Magneto-optical properties of nanoparticle dispersions based on Fe-=SUB=-3-=/SUB=-O-=SUB=-4-=/SUB=-, obtained by pulse laser ablation in a liquid." Physics of the Solid State 64, no. 14 (2022): 2334. http://dx.doi.org/10.21883/pss.2022.14.54331.147.

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The structure, optical and magneto-optical properties of colloidal solutions of iron oxide nanoparticles obtained by pulsed ablation in distilled water, both without additives and with various functional additives: gold-hydrochloric acid, silicon oxide, and polyvinylpyrrolidone, have been studied. It is shown that the main magnetic phase is magnetite Fe3O4. The size distribution of nanoparticles and the degree of their agglomeration depend on the additives. In the absence of the latter, a very wide of size distributions and strong agglomeration of particles are observed. The narrowest distribu

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Bernad, Sandor I., Vlad Socoliuc, Izabell Craciunescu, Rodica Turcu, and Elena S. Bernad. "Field-Induced Agglomerations of Polyethylene-Glycol-Functionalized Nanoclusters: Rheological Behaviour and Optical Microscopy." Pharmaceutics 15, no. 11 (2023): 2612. http://dx.doi.org/10.3390/pharmaceutics15112612.

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This research aims to investigate the agglomeration processes of magnetoresponsive functionalized nanocluster suspensions in a magnetic field, as well as how these structures impact the behaviour of these suspensions in biomedical applications. The synthesis, shape, colloidal stability, and magnetic characteristics of PEG-functionalized nanoclusters are described in this paper. Experiments using TEM, XPS, dynamic light scattering (DLS), VSM, and optical microscopy were performed to study chain-like agglomeration production and its influence on colloidal behaviour in physiologically relevant su

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Jia, Jun, and Fengyuan Sun. "Application of Polymer Nanocolloid Preparation in Stability Analysis of Motion Mechanics." Advances in Materials Science and Engineering 2022 (August 31, 2022): 1–11. http://dx.doi.org/10.1155/2022/7260515.

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Nanomaterials are widely used in various fields because of their own advantages. When the particle size of the material is reduced to the nanometer level, it will lead to new characteristics of acoustic, optical, electrical, magnetic, and thermal properties. This will greatly enrich the research content of the material and is expected to get new uses. Therefore, the preparation technology of nanomaterials is one of the current research hotspots and has broad application prospects. At present, the most commonly used preparation techniques are hydrothermal method and sol-gel method, but not all

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8

Cecil, Adam J., John E. Payne, Luke T. Hawtrey, Ben King, Gerold A. Willing, and Stuart J. Williams. "Nonlinear Agglomeration of Bimodal Colloids under Microgravity." Gravitational and Space Research 10, no. 1 (2022): 1–9. http://dx.doi.org/10.2478/gsr-2022-0001.

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Abstract A study of like-charged, bimodal colloidal suspensions was conducted in microgravity aboard the International Space Station as part of NASA's Advanced Colloids Experiments-Heated-2 (ACE-H-2) experiments. Samples comprised of silsesquioxane microparticles (600 nm) and zirconia nanoparticles (5–15 nm) in 1.5 pH nitric acid were mixed and allowed to agglomerate over time while being imaged with NASA's Light Microscopy Module (LMM). The samples contained 1% of microparticles with varying concentrations of nanoparticles in 0.1%, 0.055%, and 0.01% by volume. Digital images were captured per

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9

Ip, Alexander H., Amirreza Kiani, Illan J. Kramer, et al. "Infrared Colloidal Quantum Dot PhotovoltaicsviaCoupling Enhancement and Agglomeration Suppression." ACS Nano 9, no. 9 (2015): 8833–42. http://dx.doi.org/10.1021/acsnano.5b02164.

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10

Solaimany-Nazar, Ali Reza, and Hassan Rahimi. "Investigation on Agglomeration−Fragmentation Processes in Colloidal Asphaltene Suspensions." Energy & Fuels 23, no. 2 (2009): 967–74. http://dx.doi.org/10.1021/ef800728h.

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11

Kim, Jin-Wook, and Timothy A. Kramer. "Improved models for fractal colloidal agglomeration: computationally efficient algorithms." Colloids and Surfaces A: Physicochemical and Engineering Aspects 253, no. 1-3 (2005): 33–49. http://dx.doi.org/10.1016/j.colsurfa.2004.10.101.

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12

Link, Julian, Bastian Strybny, Thibaut Divoux, et al. "Mechanisms of thixotropy in cement suspensions considering influences from shear history and hydration." ce/papers 6, no. 6 (2023): 698–704. http://dx.doi.org/10.1002/cepa.2810.

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AbstractThe rheological properties of fresh concrete are a direct function of the interaction behaviour of the granular inventory of the concrete (i.e., gravel, sand and cement) and especially of the colloidal fractions of cement. Under low shear stresses, agglomeration of colloidal particles is observed, while at high shear stresses, dispersion of these agglomerates occurs. Besides the agglomeration state, the formation of shear banding, zones with concentrated shear flow, is another controlling mechanism of the flow behaviour of cement suspensions. Rheological creep tests in this study are f

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13

Echeverría, Coro, and Carmen Mijangos. "A Way to Predict Gold Nanoparticles/Polymer Hybrid Microgel Agglomeration Based on Rheological Studies." Nanomaterials 9, no. 10 (2019): 1499. http://dx.doi.org/10.3390/nano9101499.

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In this work, a detailed rheological study of hybrid poly(acrylamide-co-acrylic acid) P(AAm-co-AAc) aqueous microgel dispersions is performed. Our intention is to understand how the presence of gold nanoparticles, AuNP, embedded within the microgel matrix, affects the viscoelastic properties, the colloidal gel structure formation, and the structure recovery after cessation of the deformation of the aqueous microgel dispersions. Frequency sweep experiments confirmed that hybrid microgel dispersions present a gel-like behavior and that the presence of AuNP content within microgel matrix contribu

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14

Doblas, David, Thomas Kister, Marina Cano-Bonilla, Lola González-García, and Tobias Kraus. "Colloidal Solubility and Agglomeration of Apolar Nanoparticles in Different Solvents." Nano Letters 19, no. 8 (2019): 5246–52. http://dx.doi.org/10.1021/acs.nanolett.9b01688.

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15

Ozaki, Masataka, Tamami Egami, Noriko Sugiyama, and Egon Matijević. "Agglomeration in colloidal hematite dispersions due to weak magnetic interactions." Journal of Colloid and Interface Science 126, no. 1 (1988): 212–19. http://dx.doi.org/10.1016/0021-9797(88)90114-2.

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16

Barcenas, Mariana, Janna Douda, and Yurko Duda. "Temperature dependence of the colloidal agglomeration inhibition: Computer simulation study." Journal of Chemical Physics 127, no. 11 (2007): 114706. http://dx.doi.org/10.1063/1.2768519.

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17

Hu, Yang, Lingyun Liu, Fanfei Min, Mingxu Zhang, and Shaoxian Song. "Hydrophobic agglomeration of colloidal kaolinite in aqueous suspensions with dodecylamine." Colloids and Surfaces A: Physicochemical and Engineering Aspects 434 (October 2013): 281–86. http://dx.doi.org/10.1016/j.colsurfa.2013.05.074.

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18

Barcenas, Mariana, and Yurko Duda. "Irreversible colloidal agglomeration in presence of associative inhibitors: Computer simulation study." Physics Letters A 365, no. 5-6 (2007): 454–57. http://dx.doi.org/10.1016/j.physleta.2007.01.059.

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19

Солодова, О. В., А. Э. Соколов, О. С. Иванова та ін. "Магнитооптические свойства дисперсий наночастиц на основе Fe-=SUB=-3-=/SUB=-O-=SUB=-4-=/SUB=-, полученных методом импульсной лазерной абляции в жидкости". Физика твердого тела 63, № 12 (2021): 2061. http://dx.doi.org/10.21883/ftt.2021.12.51666.147.

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The structure, optical and magneto-optical properties of colloidal solutions of iron oxide nanoparticles obtained by pulsed ablation in distilled water, both without additives and with various functional additives: gold-hydrochloric acid, silicon oxide, and polyvinylpyrrolidone, have been studied. It is shown that the main magnetic phase is magnetite Fe3O4. The size distribution of nanoparticles and the degree of their agglomeration depend on the additives. In the absence of the latter, a very wide of size distributions and strong agglomeration of particles are observed. The narrowest distribu

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20

Gorji, Mohammad Saleh, Abdul Razak Khairunisak, and Kuan Yew Cheong. "Deposition of Gold Nanoparticles on Linker-Free Silicon Substrate by Spin-Coating." Advanced Materials Research 1024 (August 2014): 124–27. http://dx.doi.org/10.4028/www.scientific.net/amr.1024.124.

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Colloidal gold (Au) nanoparticles (NPs) deposition on silicon (Si) substrate is highly affected by the deposition technique and surface properties of the substrate. Spin-coating technique has been proven to be an efficient approach in terms of cost, time and maintaining the quality of the deposition. However, to prevent the agglomeration of NPs and obtain desirable density and distribution of NPs on the substrate, precise control of the spin-coating parameters is required. In this study colloidal Au NPs were spin-coated onto a modified, yet linker-free Si surface. By controlling the spinning s

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21

Ng, Qi Hwa, Jit Kang Lim, Ahmad Abdul Latif, Boon Seng Ooi, and Siew Chun Low. "Enhance the Colloidal Stability of Magnetite Nanoparticles Using Poly(sodium 4-styrene sulfonate) Stabilizers." Applied Mechanics and Materials 625 (September 2014): 168–71. http://dx.doi.org/10.4028/www.scientific.net/amm.625.168.

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The major challenge in assessing the performance of magnetite nanoparticles (MNPs) in removing pollutants from wastewater is the agglomeration of those nanoparticles into a bulky cluster size. In this study, different concentration of poly (sodium 4-styrene sulfonate) (PSS) were coated around the surface of MNPs to increase the particles’ colloidal stability. Both dynamic light scattering (DLS) and thermogravimetric (TGA) analyses have proved the success coating of PSS onto MNPs, whereby the cluster size of the functionalized MNPs were shown notably depends on the applied dosage of PSS. PSS/MN

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22

Kuz’menko, A. P., N. A. Leonenko, V. I. Kharchenko, N. A. Kuz’menko, I. V. Silyutin, and I. V. Khrapov. "Thermocapillary mechanism of laser-stimulated agglomeration of ultradisperse and colloidal-ionic gold." Technical Physics Letters 35, no. 9 (2009): 837–40. http://dx.doi.org/10.1134/s1063785009090156.

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23

Henry, Christophe, Jean-Pierre Minier, Jacek Pozorski, and Grégory Lefèvre. "A New Stochastic Approach for the Simulation of Agglomeration between Colloidal Particles." Langmuir 29, no. 45 (2013): 13694–707. http://dx.doi.org/10.1021/la403615w.

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24

Siepmann, R., F. von der Kammer, and U. Förstner. "Colloidal transport and agglomeration in column studies for advanced run-off filtration facilities - particle size and time resolved monitoring of effluents with flow-field-flowfractionation." Water Science and Technology 50, no. 12 (2004): 95–102. http://dx.doi.org/10.2166/wst.2004.0700.

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The efficiency of road run-off filtration facilities based on ion-exchange materials is reduced by pollutants which are transported bound to particles. To quantify the factors governing particle transport phenomena, a simplified model consisting of quartz sand-filled columns representing the filter/soil was set up. Suspensions of artificial clays, cold water-extracted natural clays, and real run-off were used as model effluents. Five experiments were performed: breakthrough of a natural soil suspension, remobilization of a natural soil suspension after ionic strength-drop, the same two experim

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25

Capek, Ignác. "Noble Metal Nanoparticles and Their (Bio) Conjugates. I. Preparation." International Journal of Chemistry 8, no. 1 (2016): 74. http://dx.doi.org/10.5539/ijc.v8n1p74.

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<p>Noble metal nanoparticles are important subjects in the field of nanotechnology. Various synthetic processes have been summarized and discussed for the preparation of noble metal nanoparticles of different sizes, shapes and solubility. Among them the colloidal fluids are most fascinating. The formation of nanoparticles starts by the reduction of metal salt and continue with the agglomeration of metal atoms to embryos, subnanoparticles and to premature metal nanoparticles. The existence of the microenvironments in the colloidal systems gives nanoparticles unique reactivity towards vari

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26

Godymchuk, Anna, Alexey Ilyashenko, Yury Konyukhov, Peter Ogbuna Offor, and Galiya Baisalova. "Agglomeration and dissolution of iron oxide nanoparticles in simplest biological media." AIMS Materials Science 9, no. 4 (2022): 642–52. http://dx.doi.org/10.3934/matersci.2022039.

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<abstract> <p>Despite high medical and biological potential, the penetration of iron oxide nanoparticles (NPs) into a human body can cause their dissolution with subsequent accumulation of highly toxic iron compounds. The paper describes the agglomeration and dissolution behavior of differently sized α-Fe<sub>2</sub>O<sub>3</sub> NPs in the simplest biological solutions. The average sizes of the initial NPs according to the BET analysis are 12, 32, and 115 nm. Within 30–60 min exposure, the particle size and concentration of iron released into the solutions

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27

Kobayashi, T., D. Bach, M. Altmaier, T. Sasaki, and H. Moriyama. "Effect of temperature on the solubility and solid phase stability of zirconium hydroxide." Radiochimica Acta 101, no. 10 (2013): 645–51. http://dx.doi.org/10.1524/ract.2013.2074.

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Summary The solubility and solid phase stability of zirconium hydroxide was investigated in the acidic pH range after heating the aqueous samples at 50, 70 and 90 ◦C. The solubility measured at room temperature after exposing the batch samples to elevated temperatures for a given period of time significantly decreased with increasing heating periods. The Zr concentrations at given pH after heating at 90 ◦C for 3 weeks are about 5 orders of magnitude lower than the solubility of amorphous zirconium hydroxide (Zr(OH)4(am)) kept at room temperature. Size distributions of the Zr colloidal species

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Qin, Shuchen, Biwen Yang, Derek O. Northwood, Kristian E. Waters, and Hao Ma. "The Deep Removal of Mercury in Contaminated Acid by Colloidal Agglomeration Materials M201." Minerals 14, no. 8 (2024): 782. http://dx.doi.org/10.3390/min14080782.

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The high-temperature roasting/smelting process of copper and zinc concentrates will cause the mercury in the concentrate to evaporate into the flue gas, and most of the mercury in the flue gas will eventually enter the waste acid in its ionic form. A highly efficient mercury removal agent M201 with long carbon chains and loaded active functional groups can adsorb and disperse fine particles for mercury removal in the system. Through bridging, the linear structure is woven into a network to achieve large-scale capture and dispersion of fine particles and colloidal substances. The recommended op

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Taketomi, Susamu, Hiromasa Takahashi, Nobuyuki Inaba, and Hideki Miyajima. "Experimental and Theoretical Investigations on Agglomeration of Magnetic Colloidal Particles in Magnetic Fluids." Journal of the Physical Society of Japan 60, no. 5 (1991): 1689–707. http://dx.doi.org/10.1143/jpsj.60.1689.

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Yang, Yung-Jih, Aniruddha V. Kelkar, David S. Corti, and Elias I. Franses. "Effect of Interparticle Interactions on Agglomeration and Sedimentation Rates of Colloidal Silica Microspheres." Langmuir 32, no. 20 (2016): 5111–23. http://dx.doi.org/10.1021/acs.langmuir.6b00925.

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31

Schäfer, Bastian, Martin Hecht, Jens Harting, and Hermann Nirschl. "Agglomeration and filtration of colloidal suspensions with DVLO interactions in simulation and experiment." Journal of Colloid and Interface Science 349, no. 1 (2010): 186–95. http://dx.doi.org/10.1016/j.jcis.2010.05.025.

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32

Weng, Ying-Chieh, I. A. Rusakova, Andrei Baikalov, J. W. Chen, and Nae-Lih Wu. "Microstructural Evolution of Nanocrystalline Magnetite Synthesized by Electrocoagulation." Journal of Materials Research 20, no. 1 (2005): 75–80. http://dx.doi.org/10.1557/jmr.2005.0003.

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Nanocrystalline magnetite powders were synthesized by an electrocoagulation technique, in which an electric current was passed across two plate electrodes of carbon steel immersed in NaCl(aq) electrolyte, and the microstructure of the oxide powder was found to evolve in roughly three stages. The first stage involves formation and growth of severely defective colloidal crystallites. This is followed by agglomeration among the oxide crystallites to form mesoporous agglomerates containing predominantly inter-crystallite pores, and the average crystallite size was found to reach a plateau. Finally

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Hendrix, Douglas, Jessica McKeon, and Kay Wille. "Behavior of Colloidal Nanosilica in an Ultrahigh Performance Concrete Environment Using Dynamic Light Scattering." Materials 12, no. 12 (2019): 1976. http://dx.doi.org/10.3390/ma12121976.

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The dispersion quality of nanosilica (NS) is an essential parameter to influence and control the material characteristics of nanosilica-enhanced concrete. In this research, the dispersion quality of colloidal nanosilica in simulated concrete environments was investigated using dynamic light scattering. A concrete environment was simulated by creating a synthetic pore solution that mimicked the ionic concentration and pH value of ultrahigh-performance concrete in the fluid state. Four colloidal nanosilica samples were used, ranging in particle sizes from 5 to 75 nm, with differing solid content

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Díaz, Marcos, Flora Barba, Miriam Miranda, Francisco Guitián, Ramón Torrecillas, and José S. Moya. "Synthesis and Antimicrobial Activity of a Silver-Hydroxyapatite Nanocomposite." Journal of Nanomaterials 2009 (2009): 1–6. http://dx.doi.org/10.1155/2009/498505.

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A silver-hydroxyapatite nanocomposite has been obtained by a colloidal chemical route and subsequent reduction process in H2/Ar atmosphere at350∘C. This material has been characterized by TEM, XRD, and UV-Visible spectroscopy, showing the silver nanoparticles (∼65 nm) supported onto the HA particles (∼130 nm) surface without a high degree of agglomeration. The bactericidal effect against common Gram-positive and Gram-negative bacteria has been also investigated. The results indicated a high antimicrobial activity forStaphylococcus aureus, PneumococcusandEscherichia coli,so this material can be

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Tekeli, Süleyman, and Metin Gürü. "The Factors Affecting Colloidal Processing of 8YSCZ Ceramics." Key Engineering Materials 280-283 (February 2007): 729–34. http://dx.doi.org/10.4028/www.scientific.net/kem.280-283.729.

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To achieve improvements in the mechanical properties, fine grain size, homogeneous microstructure and high density are desirable. The poor dispersion of the powders produce difficulties in the densification and the presence of agglomerates is responsible for poor mechanical properties. Slurry casting is an important colloidal processing method for the ceramic industry and helps to prevent the agglomeration of fine particles. In the present study, the effect of processing parameters, namely solid content, dispersing agent concentration, slurry viscosity and milling time on slurry casting of 8YS

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Sarkar, P., S. Panda, B. Maji, and A. K. Mukhopadhyayan. "Plasmon induced quantified agglomeration of SiO2 nanoparticles to improve in efficiency in solar cell." Journal of Ovonic Research 18, no. 6 (2022): 723–30. http://dx.doi.org/10.15251/jor.2022.186.723.

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The impact of plasmonic confinement induced by the SiO2 nanosphere utilized as a photonic absorber in a solar cell is investigated in this paper. The modified Stober technique is utilized for irradiation experiments using the size and shape of colloidal silica nanoparticles at two dosages of 0.485mg/ml and 0.693mg/ml solutions. The agglomerated silica is placed as an absorbent layer on a solar cell, and the J-V characteristics are studied under solar irradiation. The enhancement in efficiency and Jsc is far greater than predicted induced in photon injection caused by silica nanoparticle coatin

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Domingos, Rute F., Zohreh Rafiei, Carlos E. Monteiro, Mohammad A. K. Khan, and Kevin J. Wilkinson. "Agglomeration and dissolution of zinc oxide nanoparticles: role of pH, ionic strength and fulvic acid." Environmental Chemistry 10, no. 4 (2013): 306. http://dx.doi.org/10.1071/en12202.

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Environmental context The number of nano-enabled products reaching consumers is growing exponentially, inevitably resulting in their release to the environment. The environmental fate and mobility of nanomaterials will depend on their physicochemical form(s) under natural conditions. For ZnO nanoparticles, determinations of agglomeration and dissolution under environmentally relevant conditions of pH, ionic strength and natural organic matter content will provide insight into the potential environmental risk of these novel products. Abstract The increasing use of engineered nanoparticles (ENPs

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Mackert, Viktor, Martin A. Schroer, and Markus Winterer. "Unraveling agglomeration and deagglomeration in aqueous colloidal dispersions of very small tin dioxide nanoparticles." Journal of Colloid and Interface Science 608 (February 2022): 2681–93. http://dx.doi.org/10.1016/j.jcis.2021.10.194.

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Choi, Young Joon, and Ned Djilali. "Direct numerical simulations of agglomeration of circular colloidal particles in two-dimensional shear flow." Physics of Fluids 28, no. 1 (2016): 013304. http://dx.doi.org/10.1063/1.4939501.

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Im, Hee-Jung, and Euo Chang Jung. "Colloidal nanoparticles produced from Cu metal in water by laser ablation and their agglomeration." Radiation Physics and Chemistry 118 (January 2016): 6–10. http://dx.doi.org/10.1016/j.radphyschem.2015.06.005.

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41

Garcia-Perez, P., C. Pagnoux, A. Pringuet, A. Videcoq, and J. F. Baumard. "Agglomeration of alumina submicronparticles by silica nanoparticles: Application to processing spheres by colloidal route." Journal of Colloid and Interface Science 313, no. 2 (2007): 527–36. http://dx.doi.org/10.1016/j.jcis.2007.04.050.

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Prorok, Vedrana, Dejan Movrin, Nataša Lukić, and Svetlana Popović. "New Insights into the Fouling of a Membrane during the Ultrafiltration of Complex Organic–Inorganic Feed Water." Membranes 13, no. 3 (2023): 334. http://dx.doi.org/10.3390/membranes13030334.

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This paper presents an analysis of the fouling of a ceramic membrane by a mixture containing high concentrations of humic acid and colloidal silica during cross-flow ultrafiltration under various operating conditions. Two types of feed water were tested: feed water containing humic acid and feed water containing a mixture of humic acid and colloidal silica. The colloidal silica exacerbated the fouling, yielding lower fluxes (109–394 L m−2 h−1) compared to the humic acid feed water (205–850 L m−2 h−1), while the retentions were higher except for the highest cross-flow rate. For the humic acid f

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Bantz, Christoph, Olga Koshkina, Thomas Lang, et al. "The surface properties of nanoparticles determine the agglomeration state and the size of the particles under physiological conditions." Beilstein Journal of Nanotechnology 5 (October 15, 2014): 1774–86. http://dx.doi.org/10.3762/bjnano.5.188.

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Due to the recent widespread application of nanomaterials to biological systems, a careful consideration of their physiological impact is required. This demands an understanding of the complex processes at the bio–nano interface. Therefore, a comprehensive and accurate characterization of the material under physiological conditions is crucial to correlate the observed biological impact with defined colloidal properties. As promising candidates for biomedical applications, two SiO2-based nanomaterial systems were chosen for extensive size characterization to investigate the agglomeration behavi

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Woo, Sunyoung, Soojin Kim, Hyunhong Kim, et al. "Charge-Modulated Synthesis of Highly Stable Iron Oxide Nanoparticles for In Vitro and In Vivo Toxicity Evaluation." Nanomaterials 11, no. 11 (2021): 3068. http://dx.doi.org/10.3390/nano11113068.

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The surface charge of iron oxide nanoparticles (IONPs) plays a critical role in the interactions between nanoparticles and biological components, which significantly affects their toxicity in vitro and in vivo. In this study, we synthesized three differently charged IONPs (negative, neutral, and positive) based on catechol-derived dopamine, polyethylene glycol, carboxylic acid, and amine groups, via reversible addition–fragmentation chain transfer-mediated polymerization (RAFT polymerization) and ligand exchange. The zeta potentials of the negative, neutral, and positive IONPs were −39, −0.6,

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Madsuha, Alfian F., Akhmad H. Yuwono, Nofrijon Sofyan, and Michael Krueger. "Enhanced Device Performance of Bulk Heterojunction (BHJ) Hybrid Solar Cells Based on Colloidal CdSe Quantum Dots (QDs) via Optimized Hexanoic Acid-Assisted Washing Treatment." Advances in Materials Science and Engineering 2019 (April 1, 2019): 1–6. http://dx.doi.org/10.1155/2019/7516890.

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As-synthesized colloidal quantum dots (QDs) are usually covered by an organic capping ligand. These ligands provide colloidal stability by preventing QDs agglomeration. However, their inherent electrical insulation properties deliver a problem for hybrid solar cell application, disrupting charge transfer, and electron transport in conjugated polymer/QDs photoactive blends. Therefore, a surface modification of QDs is crucial before QDs are integrated into solar cell fabrication. In this work, enhancement of power conversion efficiency (PCE) in bulk heterojunction (BHJ) hybrid solar cells based

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Guillaume, N. Rivière, Korpi Antti, Henrikki Sipponen Mika, Zou Tao, A. Kostiainen Mauri, and Österberg Monika. "Agglomeration of Viruses by Cationic Lignin Particles for Facilitated Water Purification." ACS Sustainable Chemistry and Engineering 8, no. 10 (2020): 4167–77. https://doi.org/10.1021/acssuschemeng.9b06915.

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Virus contamination of water is a threat to human health in many countries. Current solutions for inactivation of viruses mainly rely on environmentally burdensome chemical oxidation or energy-intensive ultraviolet irradiation, which may create toxic secondary products. Here, we show that renewable plant biomass-sourced colloidal lignin particles (CLPs) can be used as agglomeration agents to facilitate removal of viruses from water. We used dynamic light scattering (DLS), electrophoretic mobility shift assay (EMSA), atomic force microscopy and transmission electron microscopy (AFM, TEM), and U

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Plüisch, Claudia Simone, Rouven Stuckert, and Alexander Wittemann. "Direct Measurement of Sedimentation Coefficient Distributions in Multimodal Nanoparticle Mixtures." Nanomaterials 11, no. 4 (2021): 1027. http://dx.doi.org/10.3390/nano11041027.

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Differential centrifugal sedimentation (DCS) is based on physical separation of nanoparticles in a centrifugal field prior to their analysis. It is suitable for resolving particle populations, which only slightly differ in size or density. Agglomeration presents a common problem in many natural and engineered processes. Reliable data on the agglomeration state are also crucial for hazard and risk assessment of nanomaterials and for grouping and read-across of nanoforms. Agglomeration results in polydisperse mixtures of nanoparticle clusters with multimodal distributions in size, density, and s

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Yang, Yung-Jih, Aniruddha V. Kelkar, David S. Corti, and Elias I. Franses. "Correction to “Effect of Interparticle Interactions on Agglomeration and Sedimentation Rates of Colloidal Silica Microspheres”." Langmuir 32, no. 45 (2016): 11993–95. http://dx.doi.org/10.1021/acs.langmuir.6b03566.

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Jarray, A., V. Gerbaud, and M. Hemati. "Structure of aqueous colloidal formulations used in coating and agglomeration processes: Mesoscale model and experiments." Powder Technology 291 (April 2016): 244–61. http://dx.doi.org/10.1016/j.powtec.2015.12.033.

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Suhendi, Asep, Asep Bayu Nandiyanto, Muhammad Miftahul Munir, Takashi Ogi, and Kikuo Okuyama. "Preparation of agglomeration-free spherical hollow silica particles using an electrospray method with colloidal templating." Materials Letters 106 (September 2013): 432–35. http://dx.doi.org/10.1016/j.matlet.2013.05.056.

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