Palygorskite in sodium sulphide solution via hydrothermal process for enhanced methylene blue adsorption | |
Department | 环境材料与生态化学研究发展中心 |
Tian GY(田光燕)1,2,3; Wang WB(王文波)1,3; Kang YR(康玉茹)1,3; Wang AQ(王爱勤)1,3; Wang AQ(王爱勤) | |
2016 | |
Source Publication | Journal of the Taiwan Institute of Chemical Engineers |
ISSN | 1876-1070 |
Volume | 58Pages:417-423 |
Abstract | Palygorskite (PAL) has been recognized as a potential adsorbent for the removal of various dyes from aqueous solution, and so how to enhance its adsorption capability by an efficient approach becomes the subject of great interests. Herein, natural PAL was modified via a simple one-pot hydrothermal process in the presence of sodium sulphide to enhance the adsorption capabilities. The resultant material was characterized by Fourier transform infrared spectroscopy, X-ray diffraction and field-emission scanning electron microscopy, and the adsorption properties were evaluated using methylene blue (MB) as the model dye to explore the synergetic effect of hydrothermal process and sodium sulphide on the structure, physico-chemical features and adsorption properties. It was found that the PAL rod crystal was partially evolved as new silicate with relatively higher adsorption activity. The adsorption capacity for MB evidently enhanced from 129.71 mg/g to 187.56 mg/g after hydrothermal modification, and the adsorption kinetics can be accurately fitted by a pseudo-second-order model. The chemical adsorption is the main driving force for the adsorption process, and the intensified electrostatic and hydrogen-bonding interaction between MB and PAL and the chemical association of –Si–O– groups with MB molecules plays a key role to enhance the adsorption properties. |
Keyword | Palygorskite Sodium Sulfide Hydrothermal Adsorption Methylene Blue |
Subject Area | 环境材料与生态化学 |
DOI | 10.1016/j.jtice.2015.06.022 |
Funding Organization | “863” Project of the Ministry of Science and Technology, People’s Republic of China (no. 2013AA032003);the National Natural Science Foundation of China (no. 21377135;51403221) |
Indexed By | SCI |
If | 4.217 |
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/362003/19094 |
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, Tianshui Middle Rd 18, 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 | Tian GY,Wang WB,Kang YR,et al. Palygorskite in sodium sulphide solution via hydrothermal process for enhanced methylene blue adsorption[J]. Journal of the Taiwan Institute of Chemical Engineers,2016,58:417-423. |
APA | Tian GY,Wang WB,Kang YR,Wang AQ,&王爱勤.(2016).Palygorskite in sodium sulphide solution via hydrothermal process for enhanced methylene blue adsorption.Journal of the Taiwan Institute of Chemical Engineers,58,417-423. |
MLA | Tian GY,et al."Palygorskite in sodium sulphide solution via hydrothermal process for enhanced methylene blue adsorption".Journal of the Taiwan Institute of Chemical Engineers 58(2016):417-423. |
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