A Pt and Pd bimetal nanowire based stereoselective sensor for the discrimination of ascorbic acid and isoascorbic acid,Analytical Methods

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A Pt and Pd bimetal nanowire based stereoselective sensor for the discrimination of ascorbic acid and isoascorbic acid
Analytical Methods ( IF 2.7 ) Pub Date : 2018-03-13 00:00:00 , DOI: 10.1039/c8ay00300a
Jiao Ma _{1,

2,

3,

4,

5} , Chengcheng Yang _{1,

2,

3,

4,

5} , Shu Zhu _{1,

2,

3,

4,

5} , Jinyi Song _{1,

2,

3,

4,

5} , Yingzi Fu _{1,

2,

3,

4,

5}

Affiliation

In this paper, a simple stereoselective sensing platform for the recognition of ascorbic acid (AA) and isoascorbic acid (IAA) was fabricated via immobilizing HS-β-cyclodextrin (HS-β-CD) on the surface of nanocomposite modified glassy carbon electrodes (GCEs). The nanocomposites were prepared using Pt and Pd bimetal nanowires (Pt–PdNWs) and reduced graphene oxide (rGO). The preparation process was characterized by scanning electron microscopy (SEM), energy-dispersive X-ray spectroscopy (EDX), cyclic voltammetry (CV) and differential pulse voltammetry (DPV). After the modified electrodes interacted with the analytes, obvious differences in the peak currents of AA and IAA were obtained, hinting at the ability of the proposed sensor to recognize AA and IAA. This sensor with simple preparation, a rapid response, and excellent stability and reproducibility provided a promising perspective to recognize and determine AA and IAA.

中文翻译：

基于Pt和Pd双金属纳米线的立体选择性传感器，用于区分抗坏血酸和异抗坏血酸

本文通过一个简单的立体选择性传感平台，用于识别抗坏血酸（AA）和异抗坏血酸（IAA）。将HS-β-环糊精（HS-β-CD）固定在纳米复合改性玻璃碳电极（GCE）的表面上。使用Pt和Pd双金属纳米线（Pt–PdNWs）和还原氧化石墨烯（rGO）制备了纳米复合材料。通过扫描电子显微镜（SEM），能量色散X射线能谱（EDX），循环伏安法（CV）和微分脉冲伏安法（DPV）对制备过程进行了表征。修饰的电极与分析物相互作用后，AA和IAA的峰值电流出现明显差异，这暗示了所提出的传感器识别AA和IAA的能力。这种传感器具有简单的制备，快速的反应以及出色的稳定性和可重复性，为识别和确定AA和IAA提供了广阔的前景。

更新日期：2018-03-13

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