Distinct interface behaviors of Ni(II) on graphene oxide and oxidized carbon nanotubes triggered by different topological aggregations | |
Department | 中科院西北特色植物资源化学重点实验室/甘肃省天然药物重点实验室 |
Liang, Jianjun1; Li, Ping1; Zhao, Xiaolan1; Liu, Ziyi2; Fan, Qiaohui1; Li Z(李湛)3; Li, Jiaxing4; Wang, Dongqi2 | |
2018 | |
Source Publication | Nanoscale |
ISSN | 2040-3364 |
Volume | 10Issue:3Pages:1383-1393 |
Abstract | Although carbon nanotubes can be described as a seamlessly curled graphene nanosheet, two-dimensional graphene oxide (GO) and one-dimensional oxidized carbon nanotubes (OCNTs) have different fates and environmental risks, such as deposition, degradation and cytotoxicity. In particular, coexisting heavy metal ions (HMs) trigger distinct morphological transformations of both of these carbon derivatives. In addition, these morphological transformations can change the interface behaviors of HMs on both of these materials. In this study, the differences in the morphological changes of GO and OCNTs and the interface behaviors of Ni(II) were explored via the intrinsically microscopic structural changes of both of these typical carbon materials. Batch experiments revealed that Ni(II) sorption on GO drastically decreased with increasing ionic strength, while it was almost independent of ionic strength on the OCNTs. This phenomenon is attributed to the aggregation and wrinkling of GO sheets at higher Na+ concentrations, resulting in a decrease in the GO surface area and number of sorption sites. Meanwhile, the intertwining aggregations of OCNTs still ensured that the sorption sites were naked. For the first time, Ni2+ ions were observed to persist as inner-sphere complexes on GO even under alkaline conditions, where the Ni(OH)2(s) phase was determined on the OCNTs. This could be attributed to the fact that the fast aggregation of GO, which fixed Ni2+ ions into the interlayers, inhibited the nucleation of Ni(OH)2. Stable layered structures of GO aggregations were difficult to exfoliate, leading to a decreased release of Ni(II) from GO with increasing Ni(II) loading. For the OCNTs, naked Ni2+ ions could be easily and effectively released. These findings are critical to assess the mobility, transformation and cytotoxicity of nanomaterials and HMs in aquatic environments. |
Subject Area | 分析化学与药物化学 |
DOI | 10.1039/c7nr07966d |
Funding Organization | the Natural National Science Foundation of China (Grant No. 41573128;21647009;21601169;21601179;21473206);the Postdoctoral Science Foundation of China (Grant No. 2015 M587232);the Youth Development Foundation from Northwest Institute of Eco- Environmental and Resources, the Key Laboratory Project of Gansu Province (Grant No. 1309RTSA041);the “100- Talent” Program from the Chinese Academy of Sciences in Lanzhou Center for Oil and Gas Resources, Institute of Geology and Geophysics, CAS |
Indexed By | SCI |
Language | 英语 |
Funding Project | 药物分离材料研究组 |
compositor | 第三作者单位 |
Citation statistics | |
Document Type | 期刊论文 |
Identifier | http://ir.licp.cn/handle/362003/23768 |
Collection | 中科院西北特色植物资源化学重点实验室/甘肃省天然药物重点实验室 |
Corresponding Author | Fan, Qiaohui; Wang, Dongqi |
Affiliation | 1.Key Laboratory of Petroleum Resources, Gansu Province/Key Laboratory of Petroleum Resources Research, Institute of Geology and Geophysics, Chinese Academy of Sciences, Lanzhou 730000, China 2.CAS Key Laboratory Nuclear Radiation & Nuclear Energy Technology, and Multidisciplinary Initiative Center, Institute of High Energy Physics, Chinese Academy of Sciences, Beijing 100049, China 3.Key Laboratory of Chemistry of Northwestern Plant Resources and Key Laboratory for Natural Medicine of Gansu Province, Lanzhou Institute of Chemical Physics, Chinese Academy of Sciences, Lanzhou 730000, China 4.Institute of Plasma Physics, Chinese Academy of Sciences, P.O. Box 1126, Hefei 230031, PR China |
Recommended Citation GB/T 7714 | Liang, Jianjun,Li, Ping,Zhao, Xiaolan,et al. Distinct interface behaviors of Ni(II) on graphene oxide and oxidized carbon nanotubes triggered by different topological aggregations[J]. Nanoscale,2018,10(3):1383-1393. |
APA | Liang, Jianjun.,Li, Ping.,Zhao, Xiaolan.,Liu, Ziyi.,Fan, Qiaohui.,...&Wang, Dongqi.(2018).Distinct interface behaviors of Ni(II) on graphene oxide and oxidized carbon nanotubes triggered by different topological aggregations.Nanoscale,10(3),1383-1393. |
MLA | Liang, Jianjun,et al."Distinct interface behaviors of Ni(II) on graphene oxide and oxidized carbon nanotubes triggered by different topological aggregations".Nanoscale 10.3(2018):1383-1393. |
Files in This Item: | ||||||
File Name/Size | DocType | Version | Access | License | ||
c7nr07966d.pdf(4623KB) | 期刊论文 | 作者接受稿 | 开放获取 | CC BY-NC-SA | View Application Full Text |
Items in the repository are protected by copyright, with all rights reserved, unless otherwise indicated.
Edit Comment