Local structure determination of Zn-smectite

doi:10.2138/am-2022-8591

	Tao, Qi1,2,3 ; Xing, Chaogang 4; Lee, Seungyeol 5,6; Yang, Long 7,8; Zeng, Qingjin 1,2,9; Li, Shangying 1,2; Zhang, Tianqi 1,2,9; Lv, Guanglie 4; He, Hongping1,2,3 ; Komarneni, Sridhar 10,11
	Local structure determination of Zn-smectite
Source Publication	AMERICAN MINERALOGIST
ISSN	0003-004X
	2023-07-26
Volume	108 Issue:7 Pages:1357-1367
DOI	10.2138/am-2022-8591
Language	英语
WOS Research Area	Geochemistry & Geophysics ; Mineralogy
Abstract	An aluminum-free zinc-bearing smectite (Zn-smectite) was synthesized under hydrothermal conditions, together with its magnesium substituted products. Its layer charge calculated by cation exchange capacity (CEC) is 117.4 mmol/100 g. Powder X-ray diffraction (XRD) revealed turbostratic stacking and showed that the d(06l) value of the Zn-smectite was >1.525 angstrom, indicating that it is trioctahedral. Its d(001) value increased from ca.12.8 angstrom to ca. 16.0 A after ethylene glycol (EG) saturation. The Zn-smectite did not irreversibly collapse after heating the Li+-saturated sample to 300 degrees C, suggesting that its layer charge was generated from octahedral-site vacancies (defects). The Zn-smectite resembles zincsilitelike minerals with interlayer Na+ and Zn2+. The intralayer structure of zincsilite was confirmed by pair distribution function (PDF) analysis, and the whole crystal structure was built and optimized by DFT calculation in the CASTEP module of the Materials Studio software. Synthetic zincsilite is triclinic, space group P1, and its optimized unit-cell parameters are: a = 5.294 angstrom, b = 9.162 angstrom, c = 12.800 angstrom, alpha = 90.788 degrees, beta = 98.345 degrees, and gamma = 90.399 degrees.
Keyword	Smectite layer charge local structure turbostratic disorder PDF
WOS ID	WOS:001030344300015
Indexed By	SCI
Citation statistics	Cited Times:3[WOS] [WOS Record] [Related Records in WOS]
Document Type	期刊论文
Identifier	http://ir.gig.ac.cn/handle/344008/74590
Collection	中国科学院矿物学与成矿学重点实验室
Corresponding Author	Tao, Qi
Affiliation	1.Chinese Acad Sci, Guangzhou Inst Geochem, CAS Key Lab Mineral & Metallogeny, Guangzhou 510640, Peoples R China 2.Chinese Acad Sci, Guangzhou Inst Geochem, Guangdong Prov Key Lab Mineral Phys & Mat, Guangzhou 510640, Peoples R China 3.CAS Ctr Excellence Deep Earth Sci, Guangzhou 510640, Peoples R China 4.Zhejiang Univ, Anal Ctr Agrobiol & Environm Sci, Hangzhou 310058, Peoples R China 5.USRA Lunar & Planetary Inst, 3600 Bay Area Blvd, Houston, TX 28644 USA 6.Chungbuk Natl Univ, Dept Earth & Environm Sci, Cheongju 10027, South Korea 7.Columbia Univ, Dept Appl Phys & Appl Math, New York, NY 10027 USA 8.Tongji Univ, Sch Mat Sci & Engn, Shanghai 201804, Peoples R China 9.Univ Chinese Acad Sci, Beijing 100049, Peoples R China 10.Penn State Univ, Dept Ecosyst Sci & Management, University Pk, PA 16802 USA 11.Penn State Univ, Mat Res Inst, 204 Energy & Environm Lab, University Pk, PA 16802 USA
Recommended Citation GB/T 7714	Tao, Qi,Xing, Chaogang,Lee, Seungyeol,et al. Local structure determination of Zn-smectite[J]. AMERICAN MINERALOGIST,2023,108(7):1357-1367.
APA	Tao, Qi.,Xing, Chaogang.,Lee, Seungyeol.,Yang, Long.,Zeng, Qingjin.,...&Komarneni, Sridhar.(2023).Local structure determination of Zn-smectite.AMERICAN MINERALOGIST,108(7),1357-1367.
MLA	Tao, Qi,et al."Local structure determination of Zn-smectite".AMERICAN MINERALOGIST 108.7(2023):1357-1367.

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