Formation of Amorphous Calcium Carbonate and Its Transformation Mechanism to Crystalline CaCO3 in Laminar Microfluidics

doi:10.1021/acs.cgd.7b01634

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	Formation of Amorphous Calcium Carbonate and Its Transformation Mechanism to Crystalline CaCO3 in Laminar Microfluidics
	Zeng, Youpeng 1,2; Cao, Jianwei 1; Wang, Zhi 1; Guo, Jianwei 1; Lu, Jinshan 2
刊名	CRYSTAL GROWTH & DESIGN
	2018-03-01
卷号	18 期号:3 页码:1710-1721
ISSN号	1528-7483
DOI	10.1021/acs.cgd.7b01634
文献子类	Article
英文摘要	For traditional experimental methods, the dynamic formation and transformation of amorphous calcium carbonate (ACC) are hard to capture due to its metastability and ease of transforming rapidly to the more stable phase. The emergence of microfluidic technology provides an effective approach on that issue, thus attracting widespread researchers' interest in crystallization research. In this study, based on laminar microfluidics, we demonstrate a microfluidic approach toward the study of the formation and transformation of ACC. Through the control of the velocity and concentration of CaCl2 and Na2CO3, the crystallization process was observed on a chip under the microscope. We show by in situ confocal micro Raman spectroscopy and theoretical calculation based on fluid dynamics simulation that the phase transformation pathways are different under the different supersaturation levels in laminar microfluidics. ACC does not always appear in the crystallization process; when supersaturation above the critical supersaturation of ACC occurred, the crystalline CaCO3 phases appeared after the metastable intermediates ACC through the transformation mechanism of dissolution-recrystallization, while the crystalline CaCO3 phases formed without the intermediates ACC when supersaturation below the critical supersaturation of ACC occurred. Our work provides an approach for the investigation of metastable intermediates and support for one-step and multistep nucleation mechanisms.
WOS关键词	BIOMIMETIC MODEL ; NUCLEATION ; BIOMINERALIZATION ; GROWTH ; PRECIPITATION ; POLYMORPHISM ; SOLUBILITY ; KINETICS ; LIQUIDS
WOS研究方向	Chemistry ; Crystallography ; Materials Science
语种	英语
WOS记录号	WOS:000427203700051
资助机构	National Natural Science Foundation of China(51404225 ; Excellent Youth Project of National Natural Science Foundation of China(51422405) ; 51374192)
内容类型	期刊论文
源URL	[http://ir.ipe.ac.cn/handle/122111/24140]
专题	过程工程研究所_湿法冶金清洁生产技术国家工程实验室
作者单位	1.Chinese Acad Sci, Inst Proc Engn, Natl Engn Lab Hydromet Cleaner Prod Technol, Key Lab Green Proc & Engn, Beijing 100190, Peoples R China 2.Nanchang Hangkong Univ, Sch Mat Sci & Engn, Nanchang 330063, Jiangxi, Peoples R China
推荐引用方式 GB/T 7714	Zeng, Youpeng,Cao, Jianwei,Wang, Zhi,et al. Formation of Amorphous Calcium Carbonate and Its Transformation Mechanism to Crystalline CaCO3 in Laminar Microfluidics[J]. CRYSTAL GROWTH & DESIGN,2018,18(3):1710-1721.
APA	Zeng, Youpeng,Cao, Jianwei,Wang, Zhi,Guo, Jianwei,&Lu, Jinshan.(2018).Formation of Amorphous Calcium Carbonate and Its Transformation Mechanism to Crystalline CaCO3 in Laminar Microfluidics.CRYSTAL GROWTH & DESIGN,18(3),1710-1721.
MLA	Zeng, Youpeng,et al."Formation of Amorphous Calcium Carbonate and Its Transformation Mechanism to Crystalline CaCO3 in Laminar Microfluidics".CRYSTAL GROWTH & DESIGN 18.3(2018):1710-1721.