| Glycine-assisted evolution of palygorskite via a one-step hydrothermal process to give an efficient adsorbent for capturing Pb(II) ions | |
| Department | 环境材料与生态化学研究发展中心 |
Zhang ZF(张志芳)1,2 ; Wang WB(王文波)1,3; Kang YR(康玉茹)1,3; Zong L(宗莉)1,3; Wang AQ(王爱勤)1,3; Wang AQ(王爱勤); Wang WB(王文波)
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| 2015 | |
| Source Publication | RSC Advances
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| ISSN | 2046-2069 |
| Volume | 5Issue:117Pages:96829-96839 |
| Abstract | As the materials of “green 21st century material worlds”, natural silicates have received unprecedented attention by virtue of their abundance, low-cost, stability, and non-toxic and eco-friendly nature compared to other synthetic materials. With the aim to develop a new hybrid silicate adsorbent with improved adsorption properties, the naturally abundant palygorskite (PAL) was functionalized with glycine (GLY) via a simple one-step hydrothermal process and used for capturing Pb(II) ions from aqueous solution. The main reaction parameters, e.g., the pH values of the reaction medium, solid-to-liquid ratio, reaction time and dosage of GLY, were systematically optimized, and the as-prepared adsorbent was characterized using X-ray diffraction (XRD), field-emission scanning electron microscopy (FESEM), transmittance electronic microscopy (TEM) and Fourier transform infrared spectroscopy (FTIR) techniques. The results reveal that the PAL crystal was converted to a hybrid silicate material with the assistance of GLY, and simultaneously the functional groups were introduced during the hydrothermal reaction, which caused an evident enhancement in the adsorption capacity of PAL for Pb(II) ions from 55.76 mg g−1 to 123.24 mg g−1. Almost 99.60% of Pb(II) could be captured and removed from a 40 mg L−1 Pb(II) solution using the as-prepared GLY-PAL silicate adsorbent, which is obviously higher than the 83.85% achieved by raw PAL. The intensified complexation of the functional groups on the silicate with Pb(II), the electrostatic attraction and the pore adsorption are responsible for the enhancement in the adsorption capability. |
| Keyword | Palygorskite Glycine Structure Evolution Hydrothermal Adsorption |
| Subject Area | 环境材料与生态化学 |
| DOI | 10.1039/c5ra17724c |
| Funding Organization | National Natural Science Foundation of China (NO. 21377135;51403221);“863” Project of the Ministry of Science and Technology, P. R. China (No. 2013AA032003) |
| Indexed By | SCI |
| If | 3.840 |
| 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/362003/18730 |
| Collection | 环境材料与生态化学研究发展中心 |
| Corresponding Author | Wang AQ(王爱勤); Wang WB(王文波) |
| 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, Lanzhou Inst Chem Phys, R&D Ctr Xuyi Palygorskite Appl Technol, Xuyi 211700, Peoples R China |
| Recommended Citation GB/T 7714 | Zhang ZF,Wang WB,Kang YR,et al. Glycine-assisted evolution of palygorskite via a one-step hydrothermal process to give an efficient adsorbent for capturing Pb(II) ions[J]. RSC Advances,2015,5(117):96829-96839. |
| APA | Zhang ZF.,Wang WB.,Kang YR.,Zong L.,Wang AQ.,...&王文波.(2015).Glycine-assisted evolution of palygorskite via a one-step hydrothermal process to give an efficient adsorbent for capturing Pb(II) ions.RSC Advances,5(117),96829-96839. |
| MLA | Zhang ZF,et al."Glycine-assisted evolution of palygorskite via a one-step hydrothermal process to give an efficient adsorbent for capturing Pb(II) ions".RSC Advances 5.117(2015):96829-96839. |
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| 2015 张志芳 Glycine-ass（1164KB） | 期刊论文 | 出版稿 | 开放获取 | CC BY-NC-SA | View Application Full Text | |
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