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题名:
In-situ synthesis of reduced graphene oxide/gold nanoparticles modified electrode for speciation analysis of copper in seawater
作者: Liu, Ming1; Pan, Dawei2,3,4; Pan, Wen; Zhu, Yun2; Hu, Xueping2; Han, Haitao2; Wang, Chenchen2; Shen, Dazhong1
刊名: TALANTA
ISSN号: 0039-9140
出版日期: 2017-11-01
卷号: 174, 页码:500-506
关键词: In situ synthesis ; Reduced graphene oxide ; Gold nanoparticles ; Copper ions ; Seawater
DOI: 10.1016/j.talanta.2017.06.054
产权排序: 第2完成单位
通讯作者: Pan, Dawei(Chinese Acad Sci, Yantai Inst Coastal Zone Res, Key Lab Coastal Environm Proc & Ecol Remediat, Yantai 264003, Peoples R China) ; Shen, Dazhong(Shandong Normal Univ, Coll Chem Chem Engn & Mat Sci, Collaborat Innovat Ctr Functionalized Probes Chem, Key Lab Mol & Nano Probes,Minist Educ,Shandong Pr, Jinan 250014, Shandong, Peoples R China)
英文摘要: In this paper, reduced graphene oxide/gold nanoparticle/Nafion (rGO/AuNP/Nafion) modified electrode was fabricated through in-situ synthesis and used for determination of copper ions in strong salt electrolyte (0.5 M NaCl) by differential pulse anodic stripping voltammetry (DPASV). This in-situ synthesis procedure was based on the ion-exchange and electrochemical reduction. The use of rGO provided a larger electrode surface and the presence of more active sites, while electron transfer was accelerated by incorporating AuNPs. Nafion was utilized as a cation exchange polymer in which rGO and AuNPs could be tightly attached to the electrode surface. The physical and electrochemical characterizations of the as-prepared modified electrode were studied by transmission electron microscopy (TEM), scanning electron microscopy (SEM), energy dispersive X-ray spectroscopy (EDS) and cyclic voltammetry. AuNPs with diameter of 5-10 nm on rGO decorated in the gold electrode surface were observed. Under the optimal conditions, the rGO/AuNP/Nafion electrode had a linear response to copper ions in the concentrations range from 20 nM to 1 mu M (R-2 = 0.998), with the lowest detectable concentration of 8 nM and the detection limit of 4 nM (S/N = 3). Additionally, this electrode was successfully applied to the speciation analysis of copper (free, dissolved and total) in seawater.
研究领域[WOS]: Chemistry
项目资助者: National Natural Science Foundation of China(21575080, 41276093) ; Youth Innovation Promotion Association(2011170) ; Chinese Academy of Sciences(YZ201558)
关键词[WOS]: HEAVY-METALS ; ELECTROCHEMICAL DETERMINATION ; ETHANOL FUEL ; IRON ; COAST ; WATER ; SEA ; NANOCOMPOSITES ; CONTAMINATION ; CHINA
文章类型: Article
收录类别: SCI
原文出处: 查看原文
语种: 英语
WOS记录号: WOS:000407524900068
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内容类型: 期刊论文
URI标识: http://ir.yic.ac.cn/handle/133337/23429
Appears in Collections:中科院海岸带环境过程与生态修复重点实验室_期刊论文

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作者单位: 1.Shandong Normal Univ, Coll Chem Chem Engn & Mat Sci, Collaborat Innovat Ctr Functionalized Probes Chem, Key Lab Mol & Nano Probes,Minist Educ,Shandong Pr, Jinan 250014, Shandong, Peoples R China
2.Chinese Acad Sci, Yantai Inst Coastal Zone Res, Key Lab Coastal Environm Proc & Ecol Remediat, Yantai 264003, Peoples R China
3.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
4.Fuzhou Environm Monitoring Cent Stn, Fuzhou 350011, Fujian, Peoples R China

Recommended Citation:
Liu, Ming,Pan, Dawei,Pan, Wen,et al. In-situ synthesis of reduced graphene oxide/gold nanoparticles modified electrode for speciation analysis of copper in seawater[J]. TALANTA,2017,174:500-506.
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