Self-assembled one-dimensional MnO2@ zeolitic imidazolate framework-8 nanostructures for highly efficient arsenite removal
文献类型：期刊论文
| 作者 | Zhang, Xiwang; Jian, Meipeng; Wang, Huan; Liu, Ruiping; Qu, Jiuhui; Wang, Huanting |
| 刊名 | ENVIRONMENTAL SCIENCE-NANO
 |
| 出版日期 | 2016 |
| 卷号 | 3期号:5页码:1186-1194 |
| DOI | 10.1039/c6en00246c |
| 英文摘要 | Arsenite (As(III)) is more toxic and more difficult to remove from water than arsenate (As(V)). A pre-oxidation step is therefore necessary to achieve higher removal of As(III). In this work, novel one-dimensional (1D) beta-MnO2@ ZIF-8 nanocomposites were successfully synthesized for the first time by a facile and rapid method to achieve concurrent oxidation and adsorptive removal of As(III). In the synthesis step, the solution medium of methanol in the reaction plays a key role in reducing the interfacial energy and promotes the integration, leading to the deposition of ZIF-8 nanocrystals on beta-MnO2 nanowires. The synthesized beta-MnO2@ ZIF-8 exhibited a high surface area of 883 m(2) g(-1). Batch experimental results showed that the as-obtained beta-MnO2@ ZIF-8 nanocomposites could oxidize As(III) to As(V), exhibiting an improved adsorptive removal of arsenite compared to the ZIF-8 bulk. The kinetic and isotherm data of As(III) adsorption on beta-MnO2@ ZIF-8 nanocomposites were well fitted by pseudo-second-order and Langmuir models, respectively. The maximal adsorption capacity of As(III) was 140.27 mg g(-1) at room temperature. Meanwhile, the unique 1D nanostructure of beta-MnO2@ ZIF-8 prevented ZIF-8 agglomeration in the aqueous solution. Moreover, the beta-MnO2@ ZIF-8 nanowires showed excellent settleability by gravity alone and strong mechanical stability. |
| 源URL | [http://ir.rcees.ac.cn/handle/311016/36210]  |
| 专题 | 生态环境研究中心_中国科学院饮用水科学与技术重点实验室 |
| 推荐引用方式 GB/T 7714 | Zhang, Xiwang,Jian, Meipeng,Wang, Huan,et al. Self-assembled one-dimensional MnO2@ zeolitic imidazolate framework-8 nanostructures for highly efficient arsenite removal[J]. ENVIRONMENTAL SCIENCE-NANO,2016,3(5):1186-1194. |
| APA | Zhang, Xiwang,Jian, Meipeng,Wang, Huan,Liu, Ruiping,Qu, Jiuhui,&Wang, Huanting.(2016).Self-assembled one-dimensional MnO2@ zeolitic imidazolate framework-8 nanostructures for highly efficient arsenite removal.ENVIRONMENTAL SCIENCE-NANO,3(5),1186-1194. |
| MLA | Zhang, Xiwang,et al."Self-assembled one-dimensional MnO2@ zeolitic imidazolate framework-8 nanostructures for highly efficient arsenite removal".ENVIRONMENTAL SCIENCE-NANO 3.5(2016):1186-1194. |
入库方式： OAI收割
来源：生态环境研究中心
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