{"title":"细菌和 EPS 作用下非晶相对碳酸钙-镁矿化的作用","authors":"","doi":"10.1016/j.jcrysgro.2024.127841","DOIUrl":null,"url":null,"abstract":"<div><p>Amorphous Ca–Mg carbonate (ACMC) is an important precursor phase of carbonate, and it is of great significance for understanding the process of microbial induced carbonate mineralization and the synthesis of new biomimetic mineral materials. Currently, the biomineralization role of ACMC remains controversial. Therefore, this study conducted experiments on ACMC-induced mineralization under the action of bacteria and their extracellular polymeric substances (EPS). The results show that bacteria and their secretion of EPS contributed to the formation and stability of hydrated Mg-rich ACMC, and affected the polymorphism and morphology of minerals. Bacterial cells and EPS could provide nucleation sites for ACMC precipitation, and they could also be easily adsorbed or encapsulated by ACMC and mineral particles. EPS, Mg<sup>2+</sup>, or both were conducive to the formation of aqueous amorphous phase, and could stabilize ACMC through surface adsorption and incorporation. The results of this study help to reveal the biomineralization role of ACMC and promote understanding of the formation and transformation process of Ca-Mg carbonate.</p></div>","PeriodicalId":353,"journal":{"name":"Journal of Crystal Growth","volume":null,"pages":null},"PeriodicalIF":1.7000,"publicationDate":"2024-08-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"The roles of amorphous phase on Ca–Mg carbonate mineralization under the action of bacteria and EPS\",\"authors\":\"\",\"doi\":\"10.1016/j.jcrysgro.2024.127841\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<div><p>Amorphous Ca–Mg carbonate (ACMC) is an important precursor phase of carbonate, and it is of great significance for understanding the process of microbial induced carbonate mineralization and the synthesis of new biomimetic mineral materials. Currently, the biomineralization role of ACMC remains controversial. Therefore, this study conducted experiments on ACMC-induced mineralization under the action of bacteria and their extracellular polymeric substances (EPS). The results show that bacteria and their secretion of EPS contributed to the formation and stability of hydrated Mg-rich ACMC, and affected the polymorphism and morphology of minerals. Bacterial cells and EPS could provide nucleation sites for ACMC precipitation, and they could also be easily adsorbed or encapsulated by ACMC and mineral particles. EPS, Mg<sup>2+</sup>, or both were conducive to the formation of aqueous amorphous phase, and could stabilize ACMC through surface adsorption and incorporation. The results of this study help to reveal the biomineralization role of ACMC and promote understanding of the formation and transformation process of Ca-Mg carbonate.</p></div>\",\"PeriodicalId\":353,\"journal\":{\"name\":\"Journal of Crystal Growth\",\"volume\":null,\"pages\":null},\"PeriodicalIF\":1.7000,\"publicationDate\":\"2024-08-03\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Journal of Crystal Growth\",\"FirstCategoryId\":\"88\",\"ListUrlMain\":\"https://www.sciencedirect.com/science/article/pii/S0022024824002768\",\"RegionNum\":4,\"RegionCategory\":\"材料科学\",\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"Q3\",\"JCRName\":\"CRYSTALLOGRAPHY\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Journal of Crystal Growth","FirstCategoryId":"88","ListUrlMain":"https://www.sciencedirect.com/science/article/pii/S0022024824002768","RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q3","JCRName":"CRYSTALLOGRAPHY","Score":null,"Total":0}
The roles of amorphous phase on Ca–Mg carbonate mineralization under the action of bacteria and EPS
Amorphous Ca–Mg carbonate (ACMC) is an important precursor phase of carbonate, and it is of great significance for understanding the process of microbial induced carbonate mineralization and the synthesis of new biomimetic mineral materials. Currently, the biomineralization role of ACMC remains controversial. Therefore, this study conducted experiments on ACMC-induced mineralization under the action of bacteria and their extracellular polymeric substances (EPS). The results show that bacteria and their secretion of EPS contributed to the formation and stability of hydrated Mg-rich ACMC, and affected the polymorphism and morphology of minerals. Bacterial cells and EPS could provide nucleation sites for ACMC precipitation, and they could also be easily adsorbed or encapsulated by ACMC and mineral particles. EPS, Mg2+, or both were conducive to the formation of aqueous amorphous phase, and could stabilize ACMC through surface adsorption and incorporation. The results of this study help to reveal the biomineralization role of ACMC and promote understanding of the formation and transformation process of Ca-Mg carbonate.
期刊介绍:
The journal offers a common reference and publication source for workers engaged in research on the experimental and theoretical aspects of crystal growth and its applications, e.g. in devices. Experimental and theoretical contributions are published in the following fields: theory of nucleation and growth, molecular kinetics and transport phenomena, crystallization in viscous media such as polymers and glasses; crystal growth of metals, minerals, semiconductors, superconductors, magnetics, inorganic, organic and biological substances in bulk or as thin films; molecular beam epitaxy, chemical vapor deposition, growth of III-V and II-VI and other semiconductors; characterization of single crystals by physical and chemical methods; apparatus, instrumentation and techniques for crystal growth, and purification methods; multilayer heterostructures and their characterisation with an emphasis on crystal growth and epitaxial aspects of electronic materials. A special feature of the journal is the periodic inclusion of proceedings of symposia and conferences on relevant aspects of crystal growth.