Facile and green fabrication of size-controlled AuNPs/CNFs hybrids for the highly sensitive simultaneous detection of heavy metal ions

Facile and green fabrication of size-controlled AuNPs/CNFs hybrids for the highly sensitive simultaneous detection of heavy metal ions
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简便、绿色制造尺寸控制的 AuNPs/CNFs 杂化物,用于高灵敏度同时检测重金属离子

DOI:
10.1016/j.electacta.2016.02.163
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发表时间:
2016-04
影响因子:
6.6
通讯作者:
Du MingLiang
Du MingLiang
中科院分区:
材料科学2区
文献类型:
--
作者:
Zhang Bin;Chen JiaDong;Zhu Han;Yang TingTing;Zou MeiLing;Zhang Ming;Du MingLiang

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采用静电纺丝技术和原位热还原法制备了一种分散性良好的碳纳米纤维负载Au纳米粒子(AuNPs/CNFs),该纳米粒子具有良好的电分析活性和对重金属离子的检测灵敏度。场发射扫描电子显微镜(FE-SEM)和透射电子显微镜(TEM)的图像显示,大量直径为5-15 nm的AuNPs均匀分布在纳米纤维表面。以金纳米粒子/碳纳米纤维杂化物修饰电极为工作电极,采用方波阳极溶出伏安法(SWASV)同时检测重金属离子Cd 2+、Pb 2+和Cu 2+。电化学实验结果表明,该体系可同时检测0.1 μM的低浓度Cd ~(2+)、Pb ~(2+)和Cu ~(2+)。本工作为构建电化学传感器快速检测痕量重金属离子提供了一种简便的方法。
A well-dispersed Au nanoparticle grown on carbon nanofibers (AuNPs/CNFs) with excellent electroanalytical activity and sensitivity towards the detection of heavy metal ions was synthesized via electrospinning technology andin situthermal reduction. Field-emission scanning electron microscopy (FE-SEM) and transmission electron microscopy (TEM) images show that a large amount of AuNPs with a diameter of 5–15 nm was homogenously distributed on the surface of the nanofibers. The AuNPs/CNFs hybrids modified electrode was utilized as the working electrode for the simultaneous detection of heavy metal ions such as Cd2+, Pb2+and Cu2+through the square wave anodic stripping voltammetry (SWASV) method. The electrochemical results indicate that the simultaneous detection of Cd2+, Pb2+and Cu2+with a low concentration of 0.1 μM can be obtained. This work may provide an easy way to construct electrochemical sensors for the quick detection of trace heavy metal ions.
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