Bioprocess inspired formation of calcite mesocrystals by cation-mediated particle attachment mechanism
作者机构：State Key Laboratory of Advanced Technology for Materials Synthesis and Processing Wuhan University of Technology Hubei Longzhong Laboratory
出 版 物：《National Science Review》 (国家科学评论(英文版))
年 卷 期：2023年第10卷第4期
页 面：159-168页
核心收录：
学科分类：0710[理学-生物学] 08[工学] 0805[工学-材料科学与工程（可授工学、理学学位）] 0703[理学-化学]
基 金：supported by the National key Research and Development Program of China (2021YFA0715700) the National Natural Science Foundation of China (21905217 and 51832003) the Fundamental Research Funds for the Central Universities(2021-CL-A1-26, WUT:2020III026)
主 题：nonclassical crystallization mesocrystal calcium carbonate zinc ion particle attachment
摘 要：Calcite mesocrystals were proposed, and have been widely reported, to form in the presence of polymer additives via oriented assembly of nanoparticles. However, the formation mechanism and the role of polymer additives remain elusive. Here, inspired by the biomineralization process of sea urchin spine comprising magnesium calcite mesocrystals, we show that calcite mesocrystals could also be obtained via atachment of amorphous calcium carbonate(ACC) nanoparticles in the presence of inorganic zinc ions.Moreover, we demonstrate that zinc ions can induce the formation of temporarily stabilized amorphous nanoparticles of less than 20 nm at a significantly lower calcium carbonate concentration as compared to pure solution, which is energetically beneficial for the atachment and occlusion during calcite growth. The cation-mediated particle atachment crystallization significantly improves our understanding of mesocrystal formation mechanisms in biomineralization and offers new opportunities to bioprocess inspired inorganic ions regulated materials fabrication.
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