CAS OpenIR  > 湿法冶金清洁生产技术国家工程实验室
Formation of Amorphous Calcium Carbonate and Its Transformation Mechanism to Crystalline CaCO3 in Laminar Microfluidics
Zeng, Youpeng1,2; Cao, Jianwei1; Wang, Zhi1; Guo, Jianwei1; Lu, Jinshan2
2018-03-01
Source PublicationCRYSTAL GROWTH & DESIGN
ISSN1528-7483
Volume18Issue:3Pages:1710-1721
AbstractFor 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.
SubtypeArticle
WOS HeadingsScience & Technology ; Physical Sciences ; Technology
DOI10.1021/acs.cgd.7b01634
Indexed BySCI
Language英语
WOS KeywordBIOMIMETIC MODEL ; NUCLEATION ; BIOMINERALIZATION ; GROWTH ; PRECIPITATION ; POLYMORPHISM ; SOLUBILITY ; KINETICS ; LIQUIDS
WOS Research AreaChemistry ; Crystallography ; Materials Science
WOS SubjectChemistry, Multidisciplinary ; Crystallography ; Materials Science, Multidisciplinary
Funding OrganizationNational Natural Science Foundation of China(51404225 ; Excellent Youth Project of National Natural Science Foundation of China(51422405) ; 51374192)
WOS IDWOS:000427203700051
Citation statistics
Cited Times:9[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.ipe.ac.cn/handle/122111/24140
Collection湿法冶金清洁生产技术国家工程实验室
Affiliation1.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
Recommended Citation
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.
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