The use of copper(II) oxide nanorod bundles for the non-enzymatic voltammetric sensing of carbohydrates and hydrogen peroxide
The use of copper(II) oxide nanorod bundles for the non-enzymatic voltammetric sensing of carbohydrates and hydrogen peroxide
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DOI：
10.1016/j.snb.2008.08.006
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发表时间：
2008-12-10
影响因子：
8.4
通讯作者：
Compton, Richard G.
中科院分区：
文献类型：
--
作者：
Batchelor-McAuley, Christopher;Du, Yi;Compton, Richard G.
CuO 纳米棒团聚体是在聚乙二醇存在下通过简单的水热法合成的（PEG：M-W 20,000）。通过X射线粉末衍射、伏安法和透射电子显微镜研究了所制备的CuO材料的化学成分、尺寸和形貌。用 CuO 纳米棒修饰基面热解石墨电极 (bppg)，用于研究碱性介质 (0.1 M NaOH) 中葡萄糖、果糖和蔗糖的直接氧化。 CuO 纳米棒修饰电极在碳水化合物存在下比 CuO 微粒修饰电极具有更大的分析信号，并且葡萄糖的检测限为 1.2 x 10(-6) M，与文献相当。因此，它是一种非选择性、非酶促的总碳水化合物传感器。 CuO纳米棒修饰的bppg电极也用于H2O2的检测，结果表明，在这种情况下，由于还原窗口中氧的干扰，优先观察分析物的氧化。检测碱性溶液中过氧化氢的检测限为 2.2 x 10(-7) M。 (c) 2008 Elsevier B.V. 保留所有权利。
CuO nanorod agglomerates were synthesised via a simple hydrothermal method in the presence of polyethylene glycol (PEG: M-W 20,000). The chemical composition, size and morphology of the prepared CuO material was investigated by X-ray powder diffraction, voltammetry and transmission electron microscopy. A basal plane pyrolytic graphite electrode (bppg) was modified with the CuO nanorods and used to study the direct oxidation of glucose, fructose and sucrose in an alkaline medium (0.1 M NaOH). The CuO nanorod modified electrode was shown to have far larger analytical signals in the presence of carbohydrates than an electrode modified with CuO microparticles and gave a limit of detection for glucose of 1.2 x 10(-6) M which is comparable with the literature. As such it is a non-selective, non-enzymatic, total carbohydrate sensor. The CuO nanorod modified bppg electrode was also used for the detection of H2O2, it was shown that in this case it is preferential to look at the oxidation of the analyte due to interference of oxygen in the reductive window. A limit of detection of 2.2 x 10(-7) M was obtained for the sensing of hydrogen peroxide in an alkaline solution. (c) 2008 Elsevier B.V. All rights reserved.