Enhancement of Zn2+ and Ni2+ removal performance using a deionization pseudocapacitor with nanostructured birnessite and its carbon nanotube composite electrodes
文献类型：期刊论文
| ; | |
| 作者 | Liu, LH; Qiu, GH; Suib, SL; Liu, F; Zheng, LR ; Tan, WF; Qin, LH; Zheng LR(郑黎荣)
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| 刊名 | CHEMICAL ENGINEERING JOURNAL
 ; CHEMICAL ENGINEERING JOURNAL
|
| 出版日期 | 2017 ; 2017 |
| 卷号 | 328页码:464-473 |
| 关键词 | Deionization pseudocapacitor Deionization pseudocapacitor Heavy metal ions Birnessite-type MnO2 Carbon nanotubes Constant potential electrolysis Heavy metal ions Birnessite-type MnO2 Carbon nanotubes Constant potential electrolysis |
| ISSN号 | 1385-8947 ; 1385-8947 |
| DOI | 10.1016/j.cej.2017.07.066 ; 10.1016/j.cej.2017.07.066 |
| 文献子类 | Article ; Article |
| 英文摘要 | Manganese oxides have been widely used as deionization capacitor electrode materials to remove heavy metal ions from aqueous solutions. However, the effect of pseudocapacitive properties of manganese oxides on the removal processes remains elusive. In this work, synthesized nanostructured birnessite-type manganese oxide and birnessite/carbon nanotubes (HB/CNTs) nanocomposites were used as deionization pseudocapacitor electrode materials for Zn2+ and Ni2+ removal from aqueous solution by constant potential electrolysis. The effects of operation potential and introduction of carbon nanotubes (CNTs) on Zn2+ and Ni2+ removal capacities were further investigated. The results demonstrated a significant enhancement of electrochemical removal capacities for Zn2+ and Ni2+ by the pseudocapacitive properties of birnessite and the introduction of CNTs. The Zn2+ and Ni2+ removal capacities of birnessite electrode increased first and then decreased with the decrease of potential from 0.2 to -0.2 V (vs. SCE), and the highest removal capacities for Zn2+ and Ni2+ respectively reached 89.5 and 96.6 mg g (1) when the potential was controlled at 0 V. The HB/CNTs nanocomposite showed higher removal capacities (155.6 mg g (1) for Zn2+ and 158.4 mg g (1) for Ni2+ when the relative content of manganese oxide was 45.6%) and a better cycling stability (about 90% and 88% of the initial Zn2+ and Ni2+ removal capacity were retained after 5 cycles) than birnessite electrode. The present study makes clear the pseudocapacitive mechanism of heavy metal ion removal using birnessite, and proposes a facile method to remove heavy metal ions from aqueous solution. (C) 2017 Elsevier B.V. All rights reserved.; Manganese oxides have been widely used as deionization capacitor electrode materials to remove heavy metal ions from aqueous solutions. However, the effect of pseudocapacitive properties of manganese oxides on the removal processes remains elusive. In this work, synthesized nanostructured birnessite-type manganese oxide and birnessite/carbon nanotubes (HB/CNTs) nanocomposites were used as deionization pseudocapacitor electrode materials for Zn2+ and Ni2+ removal from aqueous solution by constant potential electrolysis. The effects of operation potential and introduction of carbon nanotubes (CNTs) on Zn2+ and Ni2+ removal capacities were further investigated. The results demonstrated a significant enhancement of electrochemical removal capacities for Zn2+ and Ni2+ by the pseudocapacitive properties of birnessite and the introduction of CNTs. The Zn2+ and Ni2+ removal capacities of birnessite electrode increased first and then decreased with the decrease of potential from 0.2 to -0.2 V (vs. SCE), and the highest removal capacities for Zn2+ and Ni2+ respectively reached 89.5 and 96.6 mg g (1) when the potential was controlled at 0 V. The HB/CNTs nanocomposite showed higher removal capacities (155.6 mg g (1) for Zn2+ and 158.4 mg g (1) for Ni2+ when the relative content of manganese oxide was 45.6%) and a better cycling stability (about 90% and 88% of the initial Zn2+ and Ni2+ removal capacity were retained after 5 cycles) than birnessite electrode. The present study makes clear the pseudocapacitive mechanism of heavy metal ion removal using birnessite, and proposes a facile method to remove heavy metal ions from aqueous solution. (C) 2017 Elsevier B.V. All rights reserved. |
| 电子版国际标准刊号 | 1873-3212 ; 1873-3212 |
| WOS关键词 | CAPACITIVE DEIONIZATION ; CAPACITIVE DEIONIZATION ; HEAVY-METALS ; AQUEOUS-SOLUTIONS ; ENERGY-STORAGE ; COPPER IONS ; DESALINATION ; MANGANESE ; SUPERCAPACITORS ; ADSORPTION ; WATER ; HEAVY-METALS ; AQUEOUS-SOLUTIONS ; ENERGY-STORAGE ; COPPER IONS ; DESALINATION ; MANGANESE ; SUPERCAPACITORS ; ADSORPTION ; WATER |
| WOS研究方向 | Engineering ; Engineering |
| 语种 | 英语 ; 英语 |
| WOS记录号 | WOS:000411118300045 ; WOS:000411118300045 |
| 源URL | [http://ir.ihep.ac.cn/handle/311005/285274]  |
| 专题 | 高能物理研究所_多学科研究中心 |
| 作者单位 | 中国科学院高能物理研究所 |
| 推荐引用方式 GB/T 7714 | Liu, LH,Qiu, GH,Suib, SL,et al. Enhancement of Zn2+ and Ni2+ removal performance using a deionization pseudocapacitor with nanostructured birnessite and its carbon nanotube composite electrodes, Enhancement of Zn2+ and Ni2+ removal performance using a deionization pseudocapacitor with nanostructured birnessite and its carbon nanotube composite electrodes[J]. CHEMICAL ENGINEERING JOURNAL, CHEMICAL ENGINEERING JOURNAL,2017, 2017,328, 328:464-473, 464-473. |
| APA | Liu, LH.,Qiu, GH.,Suib, SL.,Liu, F.,Zheng, LR.,...&郑黎荣.(2017).Enhancement of Zn2+ and Ni2+ removal performance using a deionization pseudocapacitor with nanostructured birnessite and its carbon nanotube composite electrodes.CHEMICAL ENGINEERING JOURNAL,328,464-473. |
| MLA | Liu, LH,et al."Enhancement of Zn2+ and Ni2+ removal performance using a deionization pseudocapacitor with nanostructured birnessite and its carbon nanotube composite electrodes".CHEMICAL ENGINEERING JOURNAL 328(2017):464-473. |
入库方式： OAI收割
来源：高能物理研究所
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