Effective Zinc Adsorption Driven by Electrochemical Redox Reactions of Birnessite Nanosheets Generated by Solar Photochemistry
文献类型：期刊论文
| 作者 | Zheng LR(郑黎荣) ; Huang, Qiaoyun; Zheng, Lirong; Qiu, Guohong; Suib, Steven L.; Tan, Wenfeng; Liu, Lihu; Liu, Chengshuai
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| 刊名 | ACS SUSTAINABLE CHEMISTRY & ENGINEERING
 |
| 出版日期 | 2018 |
| 卷号 | 6期号:11页码:13907-13914 |
| 关键词 | nitrate photolysis solar energy birnessite nanosheets electrochemical adsorption heavy metal ions Zn2+ |
| ISSN号 | 2168-0485 |
| DOI | 10.1021/acssuschemeng.8b02191 |
| 文献子类 | Article |
| 英文摘要 | The surface properties, chemical compositions, and crystal structures of manganese oxides can be altered by redox reactions, which affect their heavy metal ion adsorption capacities. Here, birnessite nanosheets (delta-MnO2) were synthesized from the photochemical reaction of Mn-aq(2+) and nitrate under solar irradiation, and Zn2+ was electrochemically adsorbed using the as-obtained birnessite nanosheets by galvanostatic charge-discharge. The effects of current density and electrochemical techniques (symmetric electrode and three-electrode systems) on Zn2+ adsorption capacity were also investigated. The results showed that the maximum Zn2+ adsorption capacity of the birnessite in the presence of electrochemical redox reactions could reach 383.2 mg g(-1) (589.0 mmol mol(-1)) and 442.6 mg g-(1) (680.3 mmol mol(-1)) in the symmetric electrode and three-electrode system, respectively; however, the Mn2+ release capacity in the three-electrode system was higher than that in the symmetric electrode system. With increasing current density, the Zn2+ adsorption capacity decreased. In addition, the system for heavy metal ion removal driven by electrochemical redox reactions could also be used as a supercapacitor for power storage. The present work proposes a "green" and sustainable approach for preparing nanosized birnessite, and it clarifies the adsorption mechanism of birnessite for Zn2+ in the presence of electrochemical redox reactions. |
| WOS关键词 | SUPERCAPACITOR ELECTRODE MATERIALS ; NA-RICH BIRNESSITE ; CAPACITIVE DEIONIZATION ; AQUEOUS-SOLUTION ; HEAVY-METALS ; HEXAGONAL BIRNESSITE ; OXIDATION-STATE ; PB2+ ADSORPTION ; ENERGY-STORAGE ; REMOVAL |
| WOS研究方向 | Physics |
| 语种 | 英语 |
| WOS记录号 | WOS:000449577200033 |
| 源URL | [http://ir.ihep.ac.cn/handle/311005/286711]  |
| 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 | Zheng LR,Huang, Qiaoyun,Zheng, Lirong,et al. Effective Zinc Adsorption Driven by Electrochemical Redox Reactions of Birnessite Nanosheets Generated by Solar Photochemistry[J]. ACS SUSTAINABLE CHEMISTRY & ENGINEERING,2018,6(11):13907-13914. |
| APA | 郑黎荣.,Huang, Qiaoyun.,Zheng, Lirong.,Qiu, Guohong.,Suib, Steven L..,...&Liu, Chengshuai.(2018).Effective Zinc Adsorption Driven by Electrochemical Redox Reactions of Birnessite Nanosheets Generated by Solar Photochemistry.ACS SUSTAINABLE CHEMISTRY & ENGINEERING,6(11),13907-13914. |
| MLA | 郑黎荣,et al."Effective Zinc Adsorption Driven by Electrochemical Redox Reactions of Birnessite Nanosheets Generated by Solar Photochemistry".ACS SUSTAINABLE CHEMISTRY & ENGINEERING 6.11(2018):13907-13914. |
入库方式： OAI收割
来源：高能物理研究所
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