Fabrication of A New Solid-state Electrochemiluminescent Sensing Interface for Detection of Tripropylamine

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Fabrication of A New Solid-state Electrochemiluminescent Sensing Interface for Detection of Tripropylamine

- Fabrication of A New Solid-state Electrochemiluminescent Sensing Interface for Detection of Tripropylamine
- Vol. 32, Issue 8, Pages: 1016-1019(2013)
- 作者机构：
  
  重庆电子工程职业学院建筑与材料学院
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Fabrication of A New Solid-state Electrochemiluminescent Sensing Interface for Detection of Tripropylamine. [J]. 32(8):1016-1019(2013)
DOI：

Fabrication of A New Solid-state Electrochemiluminescent Sensing Interface for Detection of Tripropylamine. [J]. 32(8):1016-1019(2013) DOI：

摘要

通过静电作用将带正电的Ru（bpy）2+3和带负电的纳米铂制备成铂钌纳米复合物（Ru-PtNPs），并将其滴涂在Nafion分散的多壁碳纳米管（MWCNTs-Nafion）复合膜修饰的玻碳电极上，制备了一种新的基于联吡啶钌的固相电致化学发光（ECL）传感器。利用扫描电镜以及电致化学发光的方法对传感界面进行表征。实验结果表明，通过此种方式可将大量的发光试剂Ru（bpy）2+3固载到电极表面，并对三丙胺（TPA）保持良好的电催化活性，Ru-PtNPs/MWCNTs-Nafion修饰电极在0.1 mol?L-1磷酸盐缓冲溶液（PBS,pH 7.4）中对TPA的响应有很好的灵敏度和稳定性，线性范围为6.67×10-7~1.00×10-3 mol?L-1，检出限（S/N=3）为3.3×10-7 mol?L-1。

Abstract

A Ru（bpy）2+3-based solid-state electrochemiluminescence（ECL） sensor was fabricated successfully.Firstly,Ru（bpy）2+3/Pt nanoparticles（Ru-PtNPs） were obtained via electrostatic interactions between the positively charged Ru（bpy）2+3 and negatively charged Pt nanoparticles.Then,Ru-PtNPs were attached to the multi-wall carbon nanotubes（MWCNTs）-Nafion homogeneous composite film coated GCE by typical ion-exchange between the positively charged Ru-PtNPs and Nafion,electrostatic interactions between positively charged Ru-PtNPs and negatively charged MWCNTs in Nafion.As a result,a large amount of luminescence probes Ru（bpy）2+3 were immobilized onto the electrode to keep their electrocatalytic activity toward the electrooxidation of tripropylamine（TPA）.The characteristic of the proposed sensor was investigated by cyclic voltammetry（CV）,scanning electron microscope（SEM） and electrochemiluminescent（ECL） method.The ECL sensor showed a good linear response to concentration of TPA in the range of 6.67×10-7-1.00×10-3 mol?L-1 with a detection limit（S/N=3） of 3.3×10-7mol?L-1.

关键词

电致化学发光Nafion多壁碳纳米管铂钌纳米复合物三丙胺

Keywords

electrochemiluminescenceNafionmulti-wall carbon nanotubesRu-PtNPstripropylamine

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