High Sensitive Sensor Fabricated by Reduced Graphene Oxide/Polyvinyl Butyral Nanofibers for Detecting Cu (II) in Water.

Rui Ding,Sheng Chen,Liqun Xue,Xiaoping Fan,Xiuzhu Lin,Zhimin Luo,Xiuling Ma

doi:10.1155/2015/723276

Abstract

Graphene oxide (GO)/polyvinyl butyral (PVB) nanofibers were prepared by a simple electrospinning technique with PVB as matrix and GO as a functional nanomaterial. GO/PVB nanofibers on glassy carbon electrode (GCE) were reduced through electrochemical method to form reduced graphene oxide (RGO)/PVB nanofibers. The morphology and structure of GO/PVB nanofiber were studied by scanning election microscopy (SEM), transmission electron microscopy (TEM), and Fourier transform infrared (FTIR). RGO/PVB modified GCE was used for fabricating an electrochemical sensor for detecting Cu (II) in water. The analysis results showed that RGO/PVB modified GCE had good analytical results with the linear range of 0.06–2.2 μM, detection limit of 4.10 nM (S/N = 3), and the sensitivity of 103.51 μA·μM−1·cm−2.

Highlights

With the development of the industrialization, more and more containments caused the serious environmental problems
The morphologies of the Graphene oxide (GO)/PVB nanofibers were observed by scanning electron microscopy (SEM)
The representative transmission electron microscopy (TEM) images of the GO/PVB nanofibers showed that GO was relatively dispersed in the nanofibers without any agglomeration

Summary

Introduction

With the development of the industrialization, more and more containments caused the serious environmental problems Among these pollutants, heavy metals have attracted great attention for they are harmful to human beings due to their toxicity, cumulative and nobiodegradability. A variety of methods have been established to detect Cu (II), such as flame atomic absorption spectrometry [2], UV-vis spectrophotometry [3], and inductively coupled plasma mass spectrometry [4]. These traditional detection methods have achieved rather good detection limit. In order to improve the sensitivity and the analytical performance, new nanomaterials will be needed to construct the sensor for Cu (II) detection

Methods

Results

Conclusion