@article{Ju2023, 
author = {Yi-Ming Ju and Fang Huang and Xin Ding and Li-Bo Mao and Shu-Hong Yu},
title = {Phase transformation-induced Mg isotope fractionation in Mg-mediated CaCO3 mineralization},
year = {2023},
journal = {Nano Research},
volume = {16},
number = {2},
pages = {3597-3602},
keywords = {mineralization, calcium carbonate, magnesium, isotope fractionation},
url = {https://www.sciopen.com/article/10.1007/s12274-022-5171-z},
doi = {10.1007/s12274-022-5171-z},
abstract = {The biomineralization of CaCO3 often involves the transformation of amorphous precursors into crystalline phases, which is regulated by various proteins and inorganic ions such as Mg2+ ions. While the effects of Mg2+ ions on the polymorph and shape of the crystalline CaCO3 have been observed and studied, the interplay between Mg2+ ions and CaCO3 during the mineralization remains unclear. This work focuses on the mechanism of Mg2+ ion-regulated mineralization of CaCO3. By tracing the Mg isotope fractionation, the different mineralization pathways of CaCO3 under different Mg2+ ion concentrations had been clarified. Detailed regulatory role of Mg2+ ions at the different stages of mineralization had been proposed through combining the fractionation data with the analyses of the CaCO3 polymorph and shape evolution. These results provide a clear view of the Mg-mediated crystallization process of amorphous CaCO3, which can be used to finely control the phase of the crystalline products according to different needs.}
}