Rationally designed calcium carbonate multifunctional trap for contaminants adsorption

Vaterite Dissolution: Mechanism and Kinetics

“…The value for vaterite is discussed later in this paper. While calcite is the most prevalent in nature due to its thermodynamic stability, all three occur, notably in the case of unstable forms in certain mollusc types. , Vaterite is particularly rare but, besides molluscs, has also been found in various sediments and rocks, is present in some bird eggs, and has been demonstrated to precipitate from the supra-glacial sulfur-containing conditions of a mineral spring in the Canadian High Arctic. − Despite the traditional applications of CaCO 3 in industries such as plastics, building materials, and cosmetics, a recent surge in controlled synthesis has expanded its applications to include biomaterials, drug delivery (notably from vaterite), environmental remediation, and energy production and storage. − Specifically, an increasing understanding of the nucleation and growth of CaCO 3 has allowed for synthesis conditions that can carefully control the dimensions, polymorphs, and morphology of synthetic CaCO 3 micronanoparticles (MNPs). ,, In combination with this, surface functionalization methods have been developed to tune properties such as surface hydrophobicity and reactivity. − …”

Response to Comment on “Drinking Boiled Tap Water Reduces Human Intake of Nanoplastics and Microplastics”

“…High temperatures may increase the rate of release of plastic additives from NMPs in natural environments and from plastic packaging materials, which has been confirmed in several published studies. , However, there is still a knowledge gap regarding the release of contaminants from NMPs upon boiling tap water. CaCO 3 crystals have large surface areas and abundant active sites, and they can efficiently sorb, encapsulate, and precipitate not only NMPs but also, among others, phosphate, heavy mental, and benzene. , It is possible that CaCO 3 incurstants could be a trap for plastic additives and/or other pollutants in boiling water, which merits further verification through specifically designed experiments.…”