From nanorods of palygorskite to nanosheets of smectite via a one-step hydrothermal process | |
Department | 环境材料与生态化学研究发展中心 |
Wang WB(王文波)1,3; Zhang ZF(张志芳)1,2; Tian GY(田光燕)1,2; Wang AQ(王爱勤)1,3; Wang AQ(王爱勤) | |
2015 | |
Source Publication | RSC Advances |
ISSN | 2046-2069 |
Volume | 5Issue:72Pages:58107-58115 |
Abstract | The structural evolution of silicate opens a new avenue to cognize its microstructure, intensify its properties and extend its application. Herein, the one-step transformation of palygorskite (PAL) nanorods into smectite nanosheets was successfully achieved under mild hydrothermal condition with no addition of any extra chemicals. The structural evolution of PAL at different reaction stages and the change in physicochemical characteristics was intensively studied through field emission scanning electron microscopy (FESEM), transmission electron microscopy (TEM), X-ray diffraction (XRD), thermogravimetry (TG) and Fourier transform infrared spectroscopy (FTIR) techniques. The key factors determining the transformation process were clarified. It was found that the moderate mechanical grinding, pH values and the existence of dolomite are essential to realize the transformation, and alkaline condition may facilitate the transformation. The transformation from nanorods to nanosheets is a rebuilding process of crystals, and the c/2 slide of tetrahedrons represents the main transformation mechanism. After the hydrothermal process, the adsorption capability of RPAL for Cu(II) evidently enhanced by 167%, and 99.01% of Cu(II) ions (only 64.9% for raw PAL) can be removed from 20 mg L_1 of Cu(II) solution. |
Subject Area | 环境材料与生态化学 |
DOI | 10.1039/c5ra05187h |
Funding Organization | the “863” Project of the Ministry of Science and Technology, P. R. China (no. 2013AA032003);the National Natural Science Foundation of China (no. 51403221) |
Indexed By | SCI |
If | 3.289 |
Language | 英语 |
Funding Project | 功能复合材料组 |
compositor | 第一作者单位 |
Citation statistics | |
Document Type | 期刊论文 |
Identifier | http://ir.licp.cn/handle/362003/7448 |
Collection | 环境材料与生态化学研究发展中心 |
Corresponding Author | Wang AQ(王爱勤) |
Affiliation | 1.Chinese Acad Sci, Lanzhou Inst Chem Phys, Ctr Ecomat & Green Chem, Lanzhou 730000, Peoples R China 2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China 3.Chinese Acad Sci, R&D Ctr Xuyi Palygorskite Appl Technol, Lanzhou Inst Chem Phys, Xuyi 211700, Peoples R China |
Recommended Citation GB/T 7714 | Wang WB,Zhang ZF,Tian GY,et al. From nanorods of palygorskite to nanosheets of smectite via a one-step hydrothermal process[J]. RSC Advances,2015,5(72):58107-58115. |
APA | Wang WB,Zhang ZF,Tian GY,Wang AQ,&王爱勤.(2015).From nanorods of palygorskite to nanosheets of smectite via a one-step hydrothermal process.RSC Advances,5(72),58107-58115. |
MLA | Wang WB,et al."From nanorods of palygorskite to nanosheets of smectite via a one-step hydrothermal process".RSC Advances 5.72(2015):58107-58115. |
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2015 RSC Adv From na(1208KB) | 期刊论文 | 作者接受稿 | 开放获取 | CC BY-NC-SA | View Application Full Text |
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