| Preparation and characterization of chitosan-poly(vinyl alcohol)/bentonite nanocomposites for adsorption of Hg(II) ions | |
| Department | 环境材料与生态化学研究发展中心 |
Wang, Xiaohuan1; Yang, Li3; Zhang JP(张俊平)4 ; Wang, Chuanyi1; Li, Qiuye2
| |
| 2014 | |
| Source Publication | Chemical Engineering Journal
 |
| ISSN | 1385-8947 |
| Volume | 251Pages:404-412 |
| Abstract | Chitosan poly(vinyl alcohol)/bentonite (CTS-PVA/BT) nanocomposites with high adsorption selectivity for Hg(II) ions were synthesized by introducing BT into the CTS-PVA polymer matrix. The structure and morphology of the nanocomposites were characterized by XRD, FTIR and SEM, etc. The BT content has great influence on microstructure of the nanocomposites. BT is in the exfoliated state in the polymer matrix when the BT content is less than 7%. Whereas some of BT tends to be intercalated by CTS and an intercalate-exfoliated nanostructure is formed as the BT content is beyond 7%. Some of BT particles disperse as tactoids in the polymeric matrix and a flocculated-intercalated nanostructure is formed with further increasing the BT content. The nanocomposites possess a mesoporous structure with a narrow size distribution and BT can effectively enhance the thermal stability. The nanocomposites have high adsorption capacity and selectivity for Hg(II) ions. The adsorption capacities for Hg(II) ions with a BT content of 0%, 10%, 30% and 50% are 460.18, 455.12, 392.19 and 360.73 mg/g, respectively, which are much higher than that for Cu(ll), Cd(II) and Pb(II) ions. Interestingly, BT can improve the adsorption selectivity of the nanocomposites for Hg(II) ions. In addition, the nanocomposites can effectively remove Hg(II) of different mercuric salts with various initial concentrations and pH. |
| Keyword | Nanocomposite Bentonite Adsorption Selectivity Hg(Ii) Removal |
| Subject Area | 环境材料与生态化学 |
| DOI | 10.1016/j.cej.2014.04.089 |
| Funding Organization | the National Natural Science Foundation of China (21107133;21103042);the “Western Light” Program of the Chinese Academy of Sciences (XBBS201116);Urumqi Research and Development of Applied Technology Fund (G131020001);the “One Hundred Talents” program of the Chinese Academy of Sciences (1029471301) |
| Indexed By | SCI |
| If | 4.321 |
| Language | 英语 |
| Funding Project | 功能复合材料组 |
| compositor | 第四作者单位 |
| Citation statistics | |
| Document Type | 期刊论文 |
| Identifier | http://ir.licp.cn/handle/362003/18296 |
| Collection | 环境材料与生态化学研究发展中心 |
| Corresponding Author | Wang, Xiaohuan; Wang, Chuanyi; Li, Qiuye |
| Affiliation | 1.Chinese Acad Sci, Key Lab Funct Mat & Devices Special Environm, Xinjiang Tech Inst Phys & Chem, Lab Environm Sci & Technol, Urumqi 830011, Peoples R China 2.Henan Univ, Key Lab Special Funct Mat, Kaifeng 475004, Peoples R China 3.Sci & Technol Dev & Exchange Ctr Xinjiang Uygur A, Urumqi 830011, Peoples R China 4.Chinese Acad Sci, Lanzhou Inst Chem Phys, Ctr Ecomat & Green Chem, Lanzhou 730000, Peoples R China |
| Recommended Citation GB/T 7714 | Wang, Xiaohuan,Yang, Li,Zhang JP,et al. Preparation and characterization of chitosan-poly(vinyl alcohol)/bentonite nanocomposites for adsorption of Hg(II) ions[J]. Chemical Engineering Journal,2014,251:404-412. |
| APA | Wang, Xiaohuan,Yang, Li,Zhang JP,Wang, Chuanyi,&Li, Qiuye.(2014).Preparation and characterization of chitosan-poly(vinyl alcohol)/bentonite nanocomposites for adsorption of Hg(II) ions.Chemical Engineering Journal,251,404-412. |
| MLA | Wang, Xiaohuan,et al."Preparation and characterization of chitosan-poly(vinyl alcohol)/bentonite nanocomposites for adsorption of Hg(II) ions".Chemical Engineering Journal 251(2014):404-412. |
| Files in This Item: | ||||||
| File Name/Size | DocType | Version | Access | License | ||
| LZ01027801 .pdf（2661KB） | 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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