Adsorption characteristics of Cr (III) onto starch-graft-poly(acrylic acid)/organo-modifed zeolite 4A composite: A novel path to the adsorption mechanisms
Ma, K; Zhao, L; Jiang, Z; Huang, YY; Sun, XP
2018
发表期刊POLYMER COMPOSITES
ISSN0272-8397
卷号39期号:4页码:1223-1233
文章类型期刊论文
摘要u Superabsorbent polymer are extensively synthesized in our daily life, and have become important scavengers of metal ions dissolved in aquatic environment. Herein, Herein, an in-depth study was performed to examine the morphology and adsorption properties of the starch-graft-poly(acrylic acid)/organo-modifed zeolite 4A composite by coupling SEM, XRF, and ICP-MS, and to completely characterize the Cr (III) coordination sphere within the complex by combining DFT calculations and XAS. The results showed that the adsorption capacity of the synthesized composite could reach to a very large value of 651.42 mgg(-1) with initial Cr3+ concentration ascending to 50 mmolL(-1), while the removal rate decreased continuously. By virtue of DFT calculations and XAS, it was found that the adsorbed chromium was coordinated by four carboxyl O in quasi-equator plane and two water O in axial direction to form a quasi-octahedral geometry. The Cr-O/C distance of our compound were very close to those reported values of Cr-adsorbed organic componds and polynuclear chromium carboxylate compounds. Finally, the combination of DFT calculations and XAS was demonstrated to be a powerful method to explore the mechanisms of metal ion adsorption onto synthesized composite. POLYM. COMPOS., 39:1223-1233, 2018. (c) 2016 Society of Plastics Engineers
关键词Ray-absorption Spectroscopy Heavy-metal Ions Aqueous-solutions Magnetic-properties Molecular-dynamics Waste-water Superabsorbent Hydrogel Fine-structure Removal Chromium
DOI10.1002/pc.24056
收录类别SCI
语种英语
WOS记录号WOS:000429582000023
引用统计
文献类型期刊论文
条目标识符http://ir.sinap.ac.cn/handle/331007/28924
专题中科院上海应用物理研究所2011-2018年
作者单位1.Ma, K
2.Zhao, L
3.Jiang, Z
4.Huang, YY
5.Sun, XP
推荐引用方式
GB/T 7714
Ma, K,Zhao, L,Jiang, Z,et al. Adsorption characteristics of Cr (III) onto starch-graft-poly(acrylic acid)/organo-modifed zeolite 4A composite: A novel path to the adsorption mechanisms[J]. POLYMER COMPOSITES,2018,39(4):1223-1233.
APA Ma, K,Zhao, L,Jiang, Z,Huang, YY,&Sun, XP.(2018).Adsorption characteristics of Cr (III) onto starch-graft-poly(acrylic acid)/organo-modifed zeolite 4A composite: A novel path to the adsorption mechanisms.POLYMER COMPOSITES,39(4),1223-1233.
MLA Ma, K,et al."Adsorption characteristics of Cr (III) onto starch-graft-poly(acrylic acid)/organo-modifed zeolite 4A composite: A novel path to the adsorption mechanisms".POLYMER COMPOSITES 39.4(2018):1223-1233.
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