Bioprocess inspired formation of calcite mesocrystals by cation-mediated particle attachment mechanism  

作　　者：Qihang Wang Bicheng Yuan Wenyang Huang Hang Ping Jingjing Xie Kun Wang Weimin Wang Zhaoyong Zou Zhengyi Fu 

机构地区：[1]State Key Laboratory of Advanced Technology for Materials Synthesis and Processing,Wuhan University of Technology,Wuhan 430070,China [2]Hubei Longzhong Laboratory,Xiangyang 441000,China

出　　处：《National Science Review》2023年第4期154-163,共10页国家科学评论（英文版）

基　　金：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)。

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.

关 键 词：nonclassical crystallization mesocrystal calcium carbonate zinc ion particle atachment 

分 类 号：TB30[一般工业技术—材料科学与工程]