Influence of chemical and structural factors on the calcite–calcium oxalate transformation

Ruíz-Agudo, Encarnación; Álvarez‐Lloret, Pedro; Putnis, Christine V.; Rodríguez‐Navarro, Alejandro B.; Putnis, Andrew

doi:10.1039/c3ce41294f

Cited by 23 publications

(25 citation statements)

References 24 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…During the dissolution of calcite, the precipitation of several secondary minerals has been observed in the presence of aqueous cations (Pb 2+ , Cu 2+ , and ) 125 – 128 , oxyanions ( , , and ) 129 , 130 , and F − 131 due to the formation of less soluble phases. Sometimes, calcite might be entirely replaced by the secondary minerals, such as cerussite (PbCO 3 ) 132 , dolomite (CaMg(CO 3 ) 2 ) 133 – 135 , magnesite (MgCO 3 ) 134 , siderite (FeCO 3 ) 133 , gypsum (CaSO 4 ) 136 , 137 , whewellite (CaC 2 O 4 ·H 2 O) 138 and fluorite (CaF 2 ) 139 , 140 , via a coupled dissolution–precipitation mechanism. Interestingly, the capture of aqueous Mg on the calcite surface was recognized when calcite dissolved in seawater, resulting in an enriched Mg surface 141 .…”

Section: Discussionmentioning

confidence: 99%

Divalent heavy metals and uranyl cations incorporated in calcite change its dissolution process

Zhang

Guo

et al. 2020

Sci Rep

View full text Add to dashboard Cite

Due to the high capacity of impurities in its structure, calcite is regarded as one of the most attractive minerals to trap heavy metals (HMs) and radionuclides via substitution during coprecipitation/crystal growth. As a high-reactivity mineral, calcite may release HMs via dissolution. However, the influence of the incorporated HMs and radionuclides in calcite on its dissolution is unclear. Herein, we reported the dissolution behavior of the synthesized calcite incorporated with cadmium (Cd), cobalt (Co), nickel (Ni), zinc (Zn), and uranium (U). Our findings indicated that the HMs and U in calcite could significantly change the dissolution process of calcite. The results demonstrated that the incorporated HMs and U had both inhibiting and enhancing effects on the solubility of calcite, depending on the type of metals and their content. Furthermore, secondary minerals such as smithsonite (ZnCO3), Co-poor aragonite, and U-rich calcite precipitated during dissolution. Thus, the incorporation of metals into calcite can control the behavior of HMs/uranium, calcite, and even carbon dioxide.

show abstract

Section: Discussionmentioning

confidence: 99%

Divalent heavy metals and uranyl cations incorporated in calcite change its dissolution process

Zhang

Guo

et al. 2020

Sci Rep

View full text Add to dashboard Cite

show abstract

“…In this way, ACC and ACO (upon their crystallization into stable, crystalline phases) might act as coupling agents between silica gels and non-silicate substrates after its recrystallization into mineral phases with an epitaxial relationship to the calcitic substrate. 2,44,45 The main goal of our study was to investigate the properties that both calcium carbonate and calcium oxalate, applied as amorphous nanoparticles, confer to Si-coatings based on standard tetraethoxysilane (TEOS) and prepolymerized TEOS (Dynasilan 40) currently used in cultural heritage conservation. We evaluated the effectiveness of these treatments following their application on common non-silicate building materials such as marble, porous calcarenite, and gypsum plaster.…”

Section: Introductionmentioning

confidence: 99%

“…This is the case of ACC and calcitic or gypsum substrates, as well as ACO and calcitic substrates. In this way, ACC and ACO (upon their crystallization into stable, crystalline phases) might act as coupling agents between silica gels and non-silicate substrates after its recrystallization into mineral phases with an epitaxial relationship to the calcitic substrate. ,, …”

Section: Introductionmentioning

confidence: 99%

Bioinspired Alkoxysilane Conservation Treatments for Building Materials Based on Amorphous Calcium Carbonate and Oxalate Nanoparticles

Burgos-Cara

Rodríguez-Navarro

Ortega-Huertas

et al. 2019

ACS Appl. Nano Mater.

Self Cite

View full text Add to dashboard Cite

The weathering of building and sculptural stone due to increasing air pollution and salt damage results in the loss of invaluable cultural heritage artworks. This has prompted the design and application of novel and effective conservation treatments. Here, we study the effect of amorphous calcium carbonate (ACC) and oxalate (ACO) nanoparticles synthesized through an emulsion-assisted precipitation on alkoxysilane-based products, commonly used for the conservation of cultural heritage. Mimicking the mechanisms by which biominerals form via amorphous precursors and natural surfaces achieve high hydrophobicity through surface roughness (e.g., lotus leaf), alkoxysilane gels dosed with ACC and ACO nanoparticles were applied on different non-silicate substrates (marble, calcarenite, and gypsum). Our results show that this bioinspired approach for enhancing the performance of alkoxysilane-based treatments could be suitable for the protection of the aforementioned type of materials, as it has a limited aesthetic impact and negligible effects on hydric and water-vapor transport properties, while it foster compatibility with non-silicate surfaces, preventing drying crack development, enhancing resistance to acid attack, and increasing hydrophobicity due to nanoparticle-induced surface roughness. Best results were obtained using ACO nanoparticles.

show abstract

“…Pseudomorphic replication is actually inspired by the so‐called mineral replacement reactions found in geological environments. Such reactions involve the transformation of a primary mineral into a secondary mineral through a distinct reaction front between the two phases and the conservation of dimension and some crystallographic information between the primary and secondary phases 10,11…”

Section: Introductionmentioning

confidence: 99%

Pseudomorphic Transformation of Layered Simple Hydroxides into Prussian Blue Analogue Nanoplatelets

et al. 2016

View full text Add to dashboard Cite

The reactivity of potassium or sodium hexacyanoferrate(II) with transition-metal layered simple hydroxides (LSHs) has been investigated to evaluate the possibility of inserting Prussian Blue analogues (PBAs) into magnetic copper(II) LSHs. This report shows how such a reaction led, unexpectedly, to the direct formation of PBA nanoparticles, the layered hydroxide serving as a metal-ion reservoir. The lamellar structure of the starting LSH collapses and copper-iron PBA nanoparticles were [a] 2031 Figure 2. Left: Structure of Cu 2 (OH) 3 (OAc)·H 2 O [P2 1 , a = 5.5875(4), b = 6.0987(4), c = 18.6801(10) Å, = 91.934(5)°]. [24] The blue polyhedra represent Cu II ions in octahedral sites, the red, grey and white balls represent oxygen, carbon and hydrogen atoms, respectively. Right: Scanning electron micrograph of the hydroxy-acetate used in this work.

show abstract

Influence of chemical and structural factors on the calcite–calcium oxalate transformation

Cited by 23 publications

References 24 publications

Divalent heavy metals and uranyl cations incorporated in calcite change its dissolution process

Divalent heavy metals and uranyl cations incorporated in calcite change its dissolution process

Bioinspired Alkoxysilane Conservation Treatments for Building Materials Based on Amorphous Calcium Carbonate and Oxalate Nanoparticles

Pseudomorphic Transformation of Layered Simple Hydroxides into Prussian Blue Analogue Nanoplatelets

Contact Info

Product

Resources

About