Titanium carbide nanoparticles/ion-exchange polymer-based sensor for catalytic stripping determination of trace iron in coastal waters

SENSORS AND ACTUATORS B-CHEMICAL

卷:219

Article

Lin, Mingyue^1,2,3  Pan, Dawei^1,2  Hu, Xueping^1,2,3  Han, Haitao^1,2  Li, Fei⁴ 

[1] Chinese Acad Sci, Yantai Inst Coastal Zone Res YIC, Key Lab Coastal Environm Proc & Ecol Remediat, Yantai 264003, Shandong, Peoples R China

[2] YICCAS, Shandong Prov Key Lab Coastal Environm Proc, Yantai 264003, Shandong, Peoples R China

[3] Univ Chinese Acad Sci, Beijing 100049, Peoples R China

[4] Shandong Normal Univ, Coll Chem Chem Engn & Mat Sci, Key Lab Mol & Nanomat Probes, Minist Educ China, Jinan 250014, Shandong, Peoples R China

关键词: Iron;    TiC nanoparticles;    Nafion;    Catalytic stripping voltammetry;    Coastal waters;   

DOI  :  10.1016/j.snb.2015.05.034

来源: Elsevier

【 摘 要 】

We establish a novel nanoparticle/ion-exchange polymer-based sensor for selective and sensitive detection of trace iron (Fe3+) in coastal waters. Titanium carbide nanoparticles (nano-TiC) are used as a typical nanomaterial with promising physical and chemical properties to accelerate the electron transfer. Nafion is chosen as the widely used cation-exchange polymer to facilitate the preconcentration of Fe3+. Taking advantage of synergistic effects of nano-TiC and Nafion as well as the catalytic amplifying effect of hydrogen peroxide (H2O2), the excellent cathodic signal responses for the stripping determination of Fe3+ which is linear in the range of 0.07-70 mu M with a detection limit of 7.2 nM can be obtained. This analytical method can be used to effectively and simply detect Fe3+ without using any complexing agents. The fabricated sensor has been successfully applied for the sensitive determination of Fe3+ in real coastal waters. (C) 2015 Elsevier B.V. All rights reserved.

【 授权许可】

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