{"title":"The dissolution and precipitation kinetics of solid particles: the influence of adsorption","authors":"Jake M. Yang, Richard G. Compton","doi":"10.1007/s10008-025-06247-8","DOIUrl":null,"url":null,"abstract":"<div><p>The dissolution or growth of solid particles, analogous to electro-dissolution and deposition processes, can occur either under mass transport or surface kinetic control with the latter considered increasingly likely as the size of the particle decreases since the rate of diffusion scales inversely with particle size. The conditions under which these processes are influenced by the adsorption of species onto the dissolving or growing surface are explored both generically and illustrated by the specific case of calcite (CaCO<sub>3</sub>) particle formation/dissolution in aqueous solution forming or from the component ions. Under surface control, the presence of adsorbed species leads to ‘blocking’ of the reactive surface, and a corresponding reduction in the observed rate. Under mass transport control, the concentrations of the various species in the layer of solution next to the solid are in equilibrium with the solid. They are thus pinned by the pertinent solubility product coupled with the solute fluxes in and out of the diffusion layer. In this situation, adsorption effects on the kinetics of dissolution/growth emerge in the observed <i>effective</i> thermodynamic solubility product as inferred from experiment. The predictions for the reduction in the rate of calcite dissolution in aqueous solution in the presence of dissolved Mg<sup>2+</sup> cations are in quantitative agreement with experiment suggesting that for solids such as calcium carbonate, the effective solubility product and hence dissolution or precipitation rate is generically dependent on the identity and coverage of the adsorbate.</p></div>","PeriodicalId":665,"journal":{"name":"Journal of Solid State Electrochemistry","volume":"29 2024","pages":"2101 - 2106"},"PeriodicalIF":2.6000,"publicationDate":"2025-03-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://link.springer.com/content/pdf/10.1007/s10008-025-06247-8.pdf","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Journal of Solid State Electrochemistry","FirstCategoryId":"5","ListUrlMain":"https://link.springer.com/article/10.1007/s10008-025-06247-8","RegionNum":4,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q3","JCRName":"ELECTROCHEMISTRY","Score":null,"Total":0}
引用次数: 0
Abstract
The dissolution or growth of solid particles, analogous to electro-dissolution and deposition processes, can occur either under mass transport or surface kinetic control with the latter considered increasingly likely as the size of the particle decreases since the rate of diffusion scales inversely with particle size. The conditions under which these processes are influenced by the adsorption of species onto the dissolving or growing surface are explored both generically and illustrated by the specific case of calcite (CaCO3) particle formation/dissolution in aqueous solution forming or from the component ions. Under surface control, the presence of adsorbed species leads to ‘blocking’ of the reactive surface, and a corresponding reduction in the observed rate. Under mass transport control, the concentrations of the various species in the layer of solution next to the solid are in equilibrium with the solid. They are thus pinned by the pertinent solubility product coupled with the solute fluxes in and out of the diffusion layer. In this situation, adsorption effects on the kinetics of dissolution/growth emerge in the observed effective thermodynamic solubility product as inferred from experiment. The predictions for the reduction in the rate of calcite dissolution in aqueous solution in the presence of dissolved Mg2+ cations are in quantitative agreement with experiment suggesting that for solids such as calcium carbonate, the effective solubility product and hence dissolution or precipitation rate is generically dependent on the identity and coverage of the adsorbate.
期刊介绍:
The Journal of Solid State Electrochemistry is devoted to all aspects of solid-state chemistry and solid-state physics in electrochemistry.
The Journal of Solid State Electrochemistry publishes papers on all aspects of electrochemistry of solid compounds, including experimental and theoretical, basic and applied work. It equally publishes papers on the thermodynamics and kinetics of electrochemical reactions if at least one actively participating phase is solid. Also of interest are articles on the transport of ions and electrons in solids whenever these processes are relevant to electrochemical reactions and on the use of solid-state electrochemical reactions in the analysis of solids and their surfaces.
The journal covers solid-state electrochemistry and focusses on the following fields: mechanisms of solid-state electrochemical reactions, semiconductor electrochemistry, electrochemical batteries, accumulators and fuel cells, electrochemical mineral leaching, galvanic metal plating, electrochemical potential memory devices, solid-state electrochemical sensors, ion and electron transport in solid materials and polymers, electrocatalysis, photoelectrochemistry, corrosion of solid materials, solid-state electroanalysis, electrochemical machining of materials, electrochromism and electrochromic devices, new electrochemical solid-state synthesis.
The Journal of Solid State Electrochemistry makes the professional in research and industry aware of this swift progress and its importance for future developments and success in the above-mentioned fields.