Reactions at the Solid−Liquid Interface:  Surface-Controlled Dissolution of Solid Particles. The Dissolution of Potassium Bicarbonate in Dimethylformamide

Forryan, Claire L.; Klymenko, Oleksiy V.; Brennan, Colin; Compton, Richard G.

doi:10.1021/jp040508e

Cited by 11 publications

(34 citation statements)

References 33 publications

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“…All of these models showed generally poor correspondence. There was good correspondence between data and prediction when a model for surface-controlled dissolution of solid particles 43, 53 was applied to the bath data. This model links the rate of solid dissolution from a spherical particle to its current surface area.…”

Section: Introductionmentioning

confidence: 78%

“…Solid particle dissolution is often controlled by mass transfer from the particle through the thin liquid film adjacent to its surface. For slowly dissolving solids, the rate-limiting mechanism can be breaking chemical interactions of surface atoms or molecules and forming ligand complexes that are soluble in the liquid phase 42, 43 . Nanoceria dissolution data were obtained for a series of aqueous carboxylic acid solutions at 37 ˚C and pH 4.5, conditions relevant to ecotoxicity and inside phagolysosomes.…”

Section: Introductionmentioning

confidence: 99%

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Surface-controlled dissolution rates: a case study of nanoceria in carboxylic acid solutions

Grulke

Beck

Yokel

et al. 2019

Environ. Sci.: Nano

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Nanoparticle dissolution in local milieu can affect their ecotoxicity and therapeutic applications. For example, carboxylic acid release from plant roots can solubilize nanoceria in the rhizosphere, affecting cerium uptake in plants. Nanoparticle dispersions were dialyzed against ten carboxylic acid solutions for up to 30 weeks; the membrane passed cerium-ligand complexes but not nanoceria. Dispersion and solution samples were analyzed for cerium by inductively coupled plasma mass spectrometry (ICP-MS). Particle size and shape distributions were measured by transmission electron microscopy (TEM). Nanoceria dissolved in all carboxylic acid solutions, leading to cascades of progressively smaller nanoparticles and producing soluble products. The dissolution rate was proportional to nanoparticle surface area. Values of the apparent dissolution rate coefficients varied with the ligand. Both nanoceria size and shape distributions were altered by the dissolution process. Density functional theory (DFT) estimates for some possible Ce(IV) products showed that their dissolution was thermodynamically favored. However, dissolution rate coefficients did not generally correlate with energy of formation values. The surface-controlled dissolution model provides a quantitative measure for nanoparticle dissolution rates: further studies of dissolution cascades should lead to improved understanding of mechanisms and processes at nanoparticle surfaces.

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Section: Introductionmentioning

confidence: 78%

Section: Introductionmentioning

confidence: 99%

Surface-controlled dissolution rates: a case study of nanoceria in carboxylic acid solutions

Grulke

Beck

Yokel

et al. 2019

Environ. Sci.: Nano

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“…The results showed poor correspondence between data and any of the models. Rather, a surface-controlled dissolution model (Forryan et al, 2005) was found to provide good correspondence between experimentally-measured cerium mass in the bath and its prediction via the discrete material balance/dissolution rate model. This model gives the loss of atoms from a solid particle as directly proportional to its surface area.…”

Section: Apparent Mechanisms Of Nanoceria Dissolutionmentioning

confidence: 96%

Carboxylic acids accelerate acidic environment-mediated nanoceria dissolution

et al. 2019

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Ligands that accelerate nanoceria dissolution may greatly affect its fate and effects. This project identified carboxylic acids that contribute to nanoceria dissolution in aqueous, acidic environments. Nanoceria has commercial and potential therapeutic applications. It biotransforms in vivo. Citric acid is commonly used to stabilize nanoceria during synthesis and in aqueous dispersions. In this study, citrate-stabilized nanoceria dispersions (~ 4 nm average primary particle size) were placed in dialysis cassettes whose membranes would pass cerium salts but not nanoceria particles. The cassettes were immersed in isoosmotic baths containing carboxylic acids at pH 4.5 at 37 °C, or select agents. Cerium atom material balances were conducted for the cassette and bath by sampling of each chamber and cerium quantitation by inductively coupled plasma mass spectrometry. Samples were also collected for high-resolution transmission electron microscopy observation of nanoceria size (cassette). In carboxylic acid solutions, nanoceria dissolution increased cerium concentration in the bath and decreased the nanoceria primary particle size in the cassette. In solutions of citric, malic, and lactic acid, and in the ammonium ion, ~ 15 nm nanoceria agglomerates persisted. With other carboxylic acids, nanoceria agglomerates grew to ~ 1 micron. Nanoceria particles were stable in solutions containing citrate (pH 7.4), water, or horseradish peroxidase i.e., the dissolution half-lives were very high. Extending these findings to in vivo and environmental systems, one would expect acidic environments containing carboxylic acids to degrade nanoceria by dissolution; two examples would be phagolysosomes and in the plant rhizosphere.

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“…Forryan et al . examined how different particle size distributions evolve over time as they dissolve, revealing similar results 18 .…”

Section: Introductionmentioning

confidence: 64%

Solid dissolution in a fluid solvent is characterized by the interplay of surface area-dependent diffusion and physical fragmentation

Seager

Acevedo

Spill

et al. 2018

Sci Rep

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The processes of dissolution and fragmentation have high relevance in pharmaceutical research, medicine, digestive physiology, and engineering design. Experimentally, dissolution and fragmentation are observed to occur simultaneously, yet little is known about the relative importance of each of these processes and their impact on the dissolution process as a whole. Thus, in order to better explain these phenomena and the manner in which they interact, we have developed a novel mathematical model of dissolution, based on partial differential equations, taking into consideration the two constituent processes of surface area-dependent diffusive mass removal and physical fragmentation of the solid particles, and the basic physical laws governing these processes. With this model, we have been able to quantify the effects of the interplay between these two processes and determine the optimal conditions for rapid solid dissolution in liquid solvents. We were able to reproduce experimentally observed phenomena and simulate dissolution under a wide range of experimentally occurring conditions to give new perspectives into the kinetics of this common, yet complex process. Finally, we demonstrated the utility of this model to aid in experiment and device design as an optimisation tool.

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Reactions at the Solid−Liquid Interface: Surface-Controlled Dissolution of Solid Particles. The Dissolution of Potassium Bicarbonate in Dimethylformamide

Cited by 11 publications

References 33 publications

Surface-controlled dissolution rates: a case study of nanoceria in carboxylic acid solutions

Surface-controlled dissolution rates: a case study of nanoceria in carboxylic acid solutions

Carboxylic acids accelerate acidic environment-mediated nanoceria dissolution

Solid dissolution in a fluid solvent is characterized by the interplay of surface area-dependent diffusion and physical fragmentation

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