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Highly efficient removal of arsenic(III) from aqueous solution by zeolitic imidazolate frameworks with different morphology
Liu, Bao; Jian, Meipeng; Liu, Ruiping; Yao, Jianfeng; Zhang, Xiwang
2015-09-20
Source PublicationCOLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
Volume481Pages:358-366
AbstractIn this study, zeolitic imidazolate frameworks (ZIFs) sorbents with three different morphology (cubic ZIFs, leaf-shaped ZIFs and dodecahedral ZIFs) were successfully synthesized in aqueous solution via green methods at room temperature and tested for removal of As(III). The ZIFs are all high crystalline, and with a BET surface area of 958.4, 12.7 and 1151.2 m(2)/g for cubic ZIFs, leaf-shaped ZIFs and dodecahedral ZIFs, respectively The experiment revealed that all three adsorbents exhibited excellent adsorption capacities of As(III) despite distinct specific surface area and morphology. The adsorption isotherms of cubic ZIFs, leaf-shaped ZIFs and dodecahedral ZIFs were generally fitted by Langmuir model and the maximum adsorption capacities were 122.6, 108.1, 117.5 mg/g, respectively at pH 8.5. At initial concentration of 200 mu g/L, As(III) was rapidly decreased to below 10 mu g/L by the three ZIFs in 2 h at a adsorbent dosage of 0.2 g/L. It was found that zinc hydroxyl substitution was the main surface complexation method for As(III) adsorption onto the three ZIFs evidenced by the FTIR and XPS results. (C) 2015 Elsevier B.V. All rights reserved.
Department环境化学与生态毒理学国家重点实验室
KeywordZeolitic Imidazolate Frameworks Sorption Arsenite Mechanism
WOS Research AreaChemistry, Physical
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Document Type期刊论文
Identifierhttp://ir.rcees.ac.cn/handle/311016/32590
Collection环境化学与生态毒理学国家重点实验室
Recommended Citation
GB/T 7714
Liu, Bao,Jian, Meipeng,Liu, Ruiping,et al. Highly efficient removal of arsenic(III) from aqueous solution by zeolitic imidazolate frameworks with different morphology[J]. COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS,2015,481:358-366.
APA Liu, Bao,Jian, Meipeng,Liu, Ruiping,Yao, Jianfeng,&Zhang, Xiwang.(2015).Highly efficient removal of arsenic(III) from aqueous solution by zeolitic imidazolate frameworks with different morphology.COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS,481,358-366.
MLA Liu, Bao,et al."Highly efficient removal of arsenic(III) from aqueous solution by zeolitic imidazolate frameworks with different morphology".COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS 481(2015):358-366.
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