Thiagarajan Soundappan, Yang Rong-Feng, Chen Shen-Ming
Electroanalysis and Bioelectrochemistry Lab, Department of Chemical Engineering and Biotechnology, National Taipei University of Technology, No.1, Section 3, Chung-Hsiao East Road, Taipei 106, Taiwan ROC.
Bioelectrochemistry. 2009 Jun;75(2):163-9. doi: 10.1016/j.bioelechem.2009.03.014. Epub 2009 Apr 6.
Palladium (Pd) nanoparticles are directly fabricated on glassy carbon electrode (GCE) and indium tin oxide electrode (ITO) by simple electrochemical deposition process. The Pd nanoparticles modified ITO electrode surface has been studied in detail using scanning electron microscopy (SEM) and atomic force microscopy (AFM). The electrodeposited nano Pd particles are found as spherical shaped in the size range of 39-78 nm. The X-ray diffraction (XRD) analysis reveals that the electrodeposited nano Pd film possesses the face centered cubic crystalline structure. This nano Pd film modified GCE effectively exhibits the electro oxidation signals for the detection of catecholamines epinephrine (EP), norepinephrine (NEP) and dopamine (DA). Especially, the proposed nano Pd film modified GCE successfully showed two well separated anodic oxidation peaks for the detection of catecholamines and ascorbic (AA) in mixture solution. The proposed nano Pd film modified electrode also retains the advantage of easy fabrication, high sensitivity and good repeatability. Finally, this type of nano Pd film modified electrode supports the selective detection of catecholamines in injection solutions.
通过简单的电化学沉积过程，钯（Pd）纳米颗粒直接制备在玻碳电极（GCE）和氧化铟锡电极（ITO）上。使用扫描电子显微镜（SEM）和原子力显微镜（AFM）对钯纳米颗粒修饰的ITO电极表面进行了详细研究。发现电沉积的纳米钯颗粒呈球形，尺寸范围为39 - 78纳米。X射线衍射（XRD）分析表明，电沉积的纳米钯膜具有面心立方晶体结构。这种纳米钯膜修饰的GCE有效地展现出用于检测儿茶酚胺肾上腺素（EP）、去甲肾上腺素（NEP）和多巴胺（DA）的电氧化信号。特别是，所提出的纳米钯膜修饰的GCE在混合溶液中检测儿茶酚胺和抗坏血酸（AA）时成功显示出两个分离良好的阳极氧化峰。所提出的纳米钯膜修饰电极还保留了易于制备、高灵敏度和良好重复性的优点。最后，这种类型的纳米钯膜修饰电极支持对注射液中儿茶酚胺的选择性检测。
