Structure and properties of vanadium(V)-doped hexagonal turbostratic birnessite and its enhanced scavenging of Pb2+ from solutions
文献类型：期刊论文
| ; | |
| 作者 | Yin, H; Feng, XH; Tan, WF; Koopal, LK; Hu, TD; Zhu, MQ; Liu, F; Hu TD(胡天斗)
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| 刊名 | JOURNAL OF HAZARDOUS MATERIALS
 ; JOURNAL OF HAZARDOUS MATERIALS
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| 出版日期 | 2015 ; 2015 |
| 卷号 | 288页码:80-88 |
| 关键词 | Birnessite Vanadium Pb2+ removal XAFS Oxyanions Birnessite Vanadium Pb2+ removal XAFS Oxyanions |
| ISSN号 | 0304-3894 |
| DOI | 10.1016/j.jhazmat.2015.01.068 |
| 文献子类 | Article |
| 英文摘要 | Vanadium(V)-doped hexagonal turbostratic bimessites were synthesized and characterized by multiple techniques and were used to remove Pb2+ from aqueous solutions. With increasing V content, the V(V)-doped birnessites have significantly decreased crystallinity, i.e., the thickness of crystals in the c axis decreases from 9.8 nm to similar to 0.7 nm, and the amount of vacancies slightly increases from 0.063 to 0.089. The specific surface areas of these samples increase after doping while the Mn average oxidation sates are almost constant. V has a valence of +5 and tetrahedral symmetry, and exists as oxyanions, including V6O162-, and VO43- on birnessite edge sites by forming monodentate corning-sharing complexes. Pb L-III-edge extended X-ray absorption fine structure (EXAFS) spectra analysis shows that, at low V contents (V/Mn <= 0.07) Pb2+ mainly binds with birnessite on octahedral vacancy and especially edge sites whereas at higher V contents (V/Mn >0.07) more Pb2+ associates with V oxyanions and form vanadinite [Pb-5(VO4)(3)Cl](-)like precipitates. With increasing V(V) content, the Pb2+ binding affinity on the V-doped birnessites significantly increases, ascribing to both the formation of the vanadinite precipitates and decreased particle sizes of birnessite. These results are useful to design environmentally benign materials for treatment of metal-polluted water. (C) 2015 Elsevier B.V. All rights reserved.; Vanadium(V)-doped hexagonal turbostratic bimessites were synthesized and characterized by multiple techniques and were used to remove Pb2+ from aqueous solutions. With increasing V content, the V(V)-doped birnessites have significantly decreased crystallinity, i.e., the thickness of crystals in the c axis decreases from 9.8 nm to similar to 0.7 nm, and the amount of vacancies slightly increases from 0.063 to 0.089. The specific surface areas of these samples increase after doping while the Mn average oxidation sates are almost constant. V has a valence of +5 and tetrahedral symmetry, and exists as oxyanions, including V6O162-, and VO43- on birnessite edge sites by forming monodentate corning-sharing complexes. Pb L-III-edge extended X-ray absorption fine structure (EXAFS) spectra analysis shows that, at low V contents (V/Mn <= 0.07) Pb2+ mainly binds with birnessite on octahedral vacancy and especially edge sites whereas at higher V contents (V/Mn >0.07) more Pb2+ associates with V oxyanions and form vanadinite [Pb-5(VO4)(3)Cl](-)like precipitates. With increasing V(V) content, the Pb2+ binding affinity on the V-doped birnessites significantly increases, ascribing to both the formation of the vanadinite precipitates and decreased particle sizes of birnessite. These results are useful to design environmentally benign materials for treatment of metal-polluted water. (C) 2015 Elsevier B.V. All rights reserved. |
| 学科主题 | Engineering; Environmental Sciences & Ecology ; Engineering; Environmental Sciences & Ecology |
| 类目[WOS] | Engineering, Environmental ; Engineering, Civil ; Environmental Sciences |
| 收录类别 | SCI ; EI |
| 电子版国际标准刊号 | 1873-3336 |
| WOS研究方向 | Engineering, Environmental ; Environmental Sciences |
| 语种 | 英语 |
| WOS记录号 | WOS:000353097900009 ; WOS:000353097900009 |
| 公开日期 | 2016-05-03 |
| 源URL | [http://ir.ihep.ac.cn/handle/311005/228303]  |
| 专题 | 高能物理研究所_多学科研究中心 |
| 推荐引用方式 GB/T 7714 | Yin, H,Feng, XH,Tan, WF,et al. Structure and properties of vanadium(V)-doped hexagonal turbostratic birnessite and its enhanced scavenging of Pb2+ from solutions, Structure and properties of vanadium(V)-doped hexagonal turbostratic birnessite and its enhanced scavenging of Pb2+ from solutions[J]. JOURNAL OF HAZARDOUS MATERIALS, JOURNAL OF HAZARDOUS MATERIALS,2015, 2015,288, 288:80-88, 80-88. |
| APA | Yin, H.,Feng, XH.,Tan, WF.,Koopal, LK.,Hu, TD.,...&胡天斗.(2015).Structure and properties of vanadium(V)-doped hexagonal turbostratic birnessite and its enhanced scavenging of Pb2+ from solutions.JOURNAL OF HAZARDOUS MATERIALS,288,80-88. |
| MLA | Yin, H,et al."Structure and properties of vanadium(V)-doped hexagonal turbostratic birnessite and its enhanced scavenging of Pb2+ from solutions".JOURNAL OF HAZARDOUS MATERIALS 288(2015):80-88. |
入库方式： OAI收割
来源：高能物理研究所
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