Analytica Chimica Acta
Analytica Chimica Acta
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发表时间：
2012
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通讯作者：
ei Cao;Jian Gong
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作者：
ei Cao;Jian Gong
采用含有高比例硝酸铜的电纺丝前驱体，经煅烧，制备了由多个相互连接的氧化铜纳米颗粒（CuO- nps）组成的氧化铜微纤维（CuO- mfs）修饰的非酶促葡萄糖传感器用氟锡氧化物（FTO）电极。扫描电镜（SEM）结果表明，组成CuO- mfs的CuO颗粒大小与前驱体溶液中硝酸铜的含量有关。随着硝酸铜含量的增加，相互连接的CuO- nps将逐渐取代大尺寸的CuO颗粒，积累CuO- mfs，这有可能为葡萄糖的电催化活性提供更大的表面积和更多的反应位点。用40 wt.%的硝酸铜制备的CuO-MFs修饰FTO电极具有2321 (cid:2) a mM−1 cm−2的高灵敏度和2.2 nM的低检出限（信噪比(S/N) = 3）。此外，在生物样品中应用CuO- MFs修饰的FTO电极作为葡萄糖传感器也取得了满意的结果。
Fluorine tin oxide (FTO) electrode modified by copper oxide microfibers (CuO-MFs) composed of numer- ous interconnected CuO nanoparticles (CuO-NPs) for nonenzymatic glucose sensor was prepared by electrospinning precursor containing high percentage content of copper nitrate with subsequent cal- cination. The results of scanning electron microscope (SEM) showed the size of CuO particles composing CuO-MFs depended on the percentage content of copper nitrate in precursor solution. With increasing the percentage content of copper nitrate, the interconnected CuO-NPs would gradually replace the large-size CuO particles to accumulate the CuO-MFs, which have the potential to provide larger surface area and more reaction sites for electrocatalytic activity toward glucose. As a glucose sensor, the CuO-MFs modified FTO electrode prepared by 40 wt.% of copper nitrate exhibited a high sensitivity of 2321 (cid:2) A mM − 1 cm − 2 with a low detection limit of 2.2 nM (signal/noise ratio (S/N) = 3). Additionally, the application of the CuO- MFs modified FTO electrode as a glucose sensor for biological samples was demonstrated with satisfactory results.