Institutional Repository of Chinese Acad Sci, Inst Solid State Phys， Hefei 230031, Anhui, Peoples R China
| Enhanced removal of trace Cr(VI) from neutral and alkaline aqueous solution by FeCo bimetallic nanoparticles | |
Qin, Nannan1; Zhang, Ya1; Zhou, Hongjian1; Geng, Zhigang1; Liu, Gang2; Zhang, Yunxia1 ; Zhao, Huijun1,3; Wang, Guozhong1
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| 2016-06-15 | |
| 发表期刊 | JOURNAL OF COLLOID AND INTERFACE SCIENCE
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| 摘要 | The reactivity of zero valent iron (Fe-0) for removing Cr(VI) is self-inhibiting under neutral and alkaline conditions, due to the precipitation of ferrous hydroxide on the surface of Fe-0. To overcome this difficulty, we incorporated a second metal (Co) into Fe-0 to form FeCo bimetallic nanoparticles (FeCo BNPs), which can achieve higher activity and significant improvement in the reaction kinetics for the removal of Cr(VI) compared with Fe-0. The FeCo BNPs were synthesized by a hydrothermal reduction method without using any templates. The characterization analysis indicated that the products were highly uniform in large scale with 120-140 nm size in diameter. The obtained FeCo BNPs exhibited a remarkable removal ability for Cr(VI) in the pH range of 5.3-10.0. Especially, FeCo BNPs were able to reduce trace Cr(VI) (1.0 mg L-1, pH = 7.5) down to about 0.025 mg L-1 within 1 h. XPS analysis confirmed that Cr(VI) was reduced to Cr (III) by FeCo BNPs, while Fe and Co was oxidized, implying a chemical reduction process. The enhanced removal of trace Cr(VI) could be originated from the introduction of Co, which not only served as a protecting agent against surface corrosion by galvanic cell effect, but also enhanced the efficient flow of electron transfer between iron and Cr(VI). All the results primarily imply that FeCo BNPs can be employed as high efficient material for wastewater treatment. (C) 2016 Elsevier Inc. All rights reserved. |
| 文章类型 | Article |
| 关键词 | Feco Bimetallic Nanoparticles Galvanic Cell Effect Cr(Vi) Wastewater |
| WOS标题词 | Science & Technology ; Physical Sciences |
| DOI | 10.1016/j.jcis.2016.03.025 |
| 关键词[WOS] | IRON-OXIDE NANOPARTICLES ; ZERO-VALENT IRON ; HEXAVALENT CHROMIUM ; CHEMICAL-REDUCTION ; ADSORPTIVE REMOVAL ; WATER ; XPS ; KINETICS ; PARTICLES ; IONS |
| 收录类别 | SCI |
| 语种 | 英语 |
| 项目资助者 | National Basic Research Program of China(2013CB934302) ; National Basic Research Program of China(2013CB934302) ; National Basic Research Program of China(2013CB934302) ; National Basic Research Program of China(2013CB934302) ; National Basic Research Program of China(2013CB934302) ; National Basic Research Program of China(2013CB934302) ; National Basic Research Program of China(2013CB934302) ; National Basic Research Program of China(2013CB934302) ; Natural Science Foundation of China(51472246 ; Natural Science Foundation of China(51472246 ; Natural Science Foundation of China(51472246 ; Natural Science Foundation of China(51472246 ; Natural Science Foundation of China(51472246 ; Natural Science Foundation of China(51472246 ; Natural Science Foundation of China(51472246 ; Natural Science Foundation of China(51472246 ; Anhui Provincial Natural Science Foundation of China(1408085MB39) ; Anhui Provincial Natural Science Foundation of China(1408085MB39) ; Anhui Provincial Natural Science Foundation of China(1408085MB39) ; Anhui Provincial Natural Science Foundation of China(1408085MB39) ; Anhui Provincial Natural Science Foundation of China(1408085MB39) ; Anhui Provincial Natural Science Foundation of China(1408085MB39) ; Anhui Provincial Natural Science Foundation of China(1408085MB39) ; Anhui Provincial Natural Science Foundation of China(1408085MB39) ; 21177132 ; 21177132 ; 21177132 ; 21177132 ; 21177132 ; 21177132 ; 21177132 ; 21177132 ; 51272255) ; 51272255) ; 51272255) ; 51272255) ; 51272255) ; 51272255) ; 51272255) ; 51272255) |
| WOS研究方向 | Chemistry |
| WOS类目 | Chemistry, Physical |
| WOS记录号 | WOS:000374620600002 |
| 引用统计 | |
| 文献类型 | 期刊论文 |
| 条目标识符 | http://ir.hfcas.ac.cn:8080/handle/334002/21189 |
| 专题 | 中科院固体物理研究所 |
| 作者单位 | 1.Chinese Acad Sci, Inst Solid State Phys, Anhui Key Lab Nanomat & Nanostruct, Key Lab Mat Phys,Ctr Environm & Energy Nanomat, Hefei 230031, Peoples R China 2.Chinese Acad Sci, Hefei Inst Phys Sci, Inst Appl Technol, Hefei 230031, Peoples R China 3.Griffith Univ, Ctr Clean Environm & Energy, Gold Coast Campus, Nathan, Qld 4222, Australia |
| 推荐引用方式 GB/T 7714 | Qin, Nannan,Zhang, Ya,Zhou, Hongjian,et al. Enhanced removal of trace Cr(VI) from neutral and alkaline aqueous solution by FeCo bimetallic nanoparticles[J]. JOURNAL OF COLLOID AND INTERFACE SCIENCE,2016,472(无):8-15. |
| APA | Qin, Nannan.,Zhang, Ya.,Zhou, Hongjian.,Geng, Zhigang.,Liu, Gang.,...&Wang, Guozhong.(2016).Enhanced removal of trace Cr(VI) from neutral and alkaline aqueous solution by FeCo bimetallic nanoparticles.JOURNAL OF COLLOID AND INTERFACE SCIENCE,472(无),8-15. |
| MLA | Qin, Nannan,et al."Enhanced removal of trace Cr(VI) from neutral and alkaline aqueous solution by FeCo bimetallic nanoparticles".JOURNAL OF COLLOID AND INTERFACE SCIENCE 472.无(2016):8-15. |
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