Multiple Growth Mechanisms of 2:1 Type Layered Aluminosilicates during Mineral Transformation

Li, Shangying1,2,3; He, Hongping1,2,4; Tao, Qi1,2,4; Du, Peixin5; Chen, Aiqing6; He, Yilin1,2,4; Zhu, Jianxi1,2,4

2022-07-01

10.1021/acsearthspacechem.2c00137

ACS Earth and Space Chemistry   Impact Factor & Quartile

2472-3452

2:1 type layered aluminosilicates (LAs) such as beidellite, montmorillonite, and paragonite distribute widely in the various environments of the Earth, and they form commonly through the transformation of other minerals under hydrothermal or weathering conditions. Understanding the growth mechanisms of 2:1 type LAs during mineral transformation is of great importance for profoundly revealing their formation processes in the geological environments and a better understanding of the formation of crystal defects within minerals, however, which is not thoroughly revealed. In this study, the transformation of boehmite into 2:1 type LAs was successfully realized under hydrothermal conditions, and the growth mechanisms of 2:1 type LAs during such a mineral transformation were explored using spectroscopic and microscopic characterizations. The results indicated that layers of 2:1 type LAs preferentially extend in the a-b plane at the initial transformation stage and stack along the c-axis with the transformation proceeding. Additionally, some small primary nanoparticles of 2:1 type LAs occasionally attached to each other along the c-axis or in the a-b plane. This revealed that 2:1 type LAs that formed at the interfaces between precursor boehmite and additional amorphous Si mainly grew through the layer growth mechanism occasionally accompanied by the oriented attachment.

KEYWORDS 2 1 type layered aluminosilicates boehmite transformation layer growth oriented attachment

SCI

English

Others

National Science Fund for Distinguished Young Scholars of China[41825003] ; Guangdong Major Project of Basic and Applied Basic Research[2019B030302013] ; National Natural Science Foundation of China[42072044] ; Guangdong Basic and Applied Basic Research Foundation[2021A1515110928] ; China Postdoctoral Science Foundation[2021M701562] ; Science and Technology Planning Project of Guangdong Province, China[2020B1212060055]

Chemistry ; Geochemistry & Geophysics

Chemistry, Multidisciplinary ; Geochemistry & Geophysics

WOS:000826690700001

AMER CHEMICAL SOC

Web of Science

1.Chinese Acad Sci, Guangzhou Inst Geochem, CAS Ctr Excellence Deep Earth Sci, CAS Key Lab Mineral & Metallogeny, Guangzhou 510640, Peoples R China
2.Guangzhou Inst Geochem, Guangdong Prov Key Lab Mineral Phys & Mat, Guangzhou 510640, Peoples R China
3.Southern Univ Sci & Technol, Sch Environm Sci & Engn, Shenzhen 518055, Peoples R China
4.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
5.Macau Univ Sci & Technol, State Key Lab Lunar & Planetary Sci, Macau 999078, Peoples R China
6.China Three Gorges Univ, Anal & Testing Ctr, Yichang 443002, Hubei, Peoples R China

Li, Shangying,He, Hongping,Tao, Qi,et al. Multiple Growth Mechanisms of 2:1 Type Layered Aluminosilicates during Mineral Transformation[J]. ACS Earth and Space Chemistry,2022.

Li, Shangying.,He, Hongping.,Tao, Qi.,Du, Peixin.,Chen, Aiqing.,...&Zhu, Jianxi.(2022).Multiple Growth Mechanisms of 2:1 Type Layered Aluminosilicates during Mineral Transformation.ACS Earth and Space Chemistry.

Li, Shangying,et al."Multiple Growth Mechanisms of 2:1 Type Layered Aluminosilicates during Mineral Transformation".ACS Earth and Space Chemistry (2022).