Picomolar detection of mercury (II) using a three-dimensional porous graphene/polypyrrole composite electrode
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- 作者：Meng Wang ; Wenjing Yuan ; Xiaowen Yu ; Gaoquan Shi
- 关键词：Polypyrrole ; Reduced graphene oxide ; Hg2+ ions ; Porous electrode
- 刊名：Analytical and Bioanalytical Chemistry
- 出版年：2014
- 出版时间：November 2014
- 年：2014
- 卷：406
- 期：27
- 页码：6953-6956
- 全文大小：617 KB
- 参考文献：1. Wang QR, Kim D, Dionysiou DD, Sorial GA, Timberlake D (2004) Sources and remediation for mercury contamination in aquatic systems—a literature review. Environ Pollut 131:323-36 CrossRef
2. Scholz F, Lovric M (1996) The standard potentials of the electrode “dissolved atomic mercury/dissolved mercury ions- Electroanal 8:1075-076 CrossRef
3. Zhao ZQ, Chen X, Yang Q, Liu JH, Huang XJ (2012) Selective adsorption toward toxic metal ions results in selective response: electrochemical studies on a polypyrrole/reduced graphene oxide nanocomposite. Chem Commun 48:2180-182 CrossRef
4. Sheng KX, Sun YQ, Li C, Yuan WJ, Shi GQ (2012) Ultrahigh-rate supercapacitors based on electrochemically reduced graphene oxide for ac line-filtering. Sci Rep 2:247 CrossRef
5. Yuan WJ, Zhou Y, Li YR, Li C, Peng HL, Zhang J, Liu ZF, Dai LM, Shi GQ (2013) The edge- and basal-plane-specific electrochemistry of a single-layer graphene sheet. Sci Rep 3:2248 - 作者单位：Meng Wang (1)
Wenjing Yuan (1)
Xiaowen Yu (1)
Gaoquan Shi (1)
1. Department of Chemistry, Tsinghua University, Beijing, 100084, China - ISSN：1618-2650
文摘
A polypyrrole (PPy)-functionalized three-dimensional (3D) porous electrode of electrochemically reduced graphene oxide (ErGO) has been prepared by electrochemical deposition. This PPy-modified 3D-ErGO electrode was used for the electrochemical detection of Hg2+ ions, and it exhibited high sensitivity and selectivity. Furthermore, the limit of detection (LOD) was measured to be as low as 0.03?nM (30?ppt), and this value is much lower than the guideline value of 2?ppb for drinking water given by the World Health Organization.