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Gram-scale, low-cost, rapid synthesis of highly stable Mg-ACC nanoparticles and their long-term preservation
Jun Jiang1, Min-Rui Gao, Yun-Hao Qiu
1Division of Nanomaterials and Chemistry, Hefei National Laboratory for Physical Sciences at the Microscale, Department of Chemistry, University of Science and Technology of China, Hefei 230026, PR China.
Abstract:
A simple chemistry route is reported for the gram-scale, low-cost, rapid synthesis of highly stable Mg-ACC nanoparticles. The possible structure of Mg-ACC can be defined as Mg₀.₁₅Ca₀.₈₅CO₃·H₂O₀.₈₅. The molar ratio of Mg²(+):Ca²(+):CO₃²⁻and the concentrations of the reactants (CaCl₂, Na₂CO₃, and MgCl₂) play important roles in the Mg:Ca molar ratio of the obtained Mg-ACC nanoparticles. In particular, Mg-ACC can be preserved for over one year without crystallization by either storing its dry powder at -5°C or storing it in ethanol at 5°C. The ability to synthesize Mg-ACC nanoparticles on a large scale is useful for biomineralization studies and industrial applications.
