Seed-Mediated Growth Method for Epitaxial Array of CuO Nanowires on Surface of Cu Nanostructures and Its Application as a Glucose Sensor
Seed-Mediated Growth Method for Epitaxial Array of CuO Nanowires on Surface of Cu Nanostructures and Its Application as a Glucose Sensor
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DOI：
10.1021/jp800694x
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发表时间：
2008-05
影响因子：
3.7
通讯作者：
Xiaojun Zhang;Guangfeng Wang;Wei Zhang;Nianjun Hu;Hua-qiang Wu;B. Fang
中科院分区：
文献类型：
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作者：
Xiaojun Zhang;Guangfeng Wang;Wei Zhang;Nianjun Hu;Hua-qiang Wu;B. Fang
采用简单的液固生长方法，在室温下制备了Cu - CuO纳米复合材料表面的单晶CuO纳米线（NWs）。场发射扫描电镜图像分析表明，NWs的根宽为50 ~ 80 nm，长为300 ~ 400 nm。对单个CuO NWs的高分辨率透射电镜研究表明，NWs为单晶，生长取向为[110]。样品的x射线粉末衍射和能量色散x射线分析表明，CuO NWs仅覆盖枝晶Cu的表面，Cu枝晶仍然存在于Cu−CuO纳米复合材料的中心。电化学阻抗谱和循环伏安法表明，Cu−CuO纳米复合材料比单独的CuO NWs或CuO纳米颗粒具有更强的促进电子转移的能力。Cu−CuO纳米复合材料成功地用于…
The preparation and characterization of a large-scale epitaxial array of single-crystalline CuO nanowires (NWs) on the surface of a Cu nanostructure (Cu−CuO nanocomposite) by a simple liquid−solid growth process at room temperature is demonstrated. The field-emission scanning electron microscopy image analysis indicated that the NWs are 50−80 nm wide at the root and 300−400 nm long. The high-resolution transmission electron microscopy study on individual CuO NWs revealed that the NWs are single crystalline with a growth orientation of [110]. X-ray powder diffraction and energy dispersive X-ray analysis of the samples revealed that the CuO NWs only cover the surface of dendritic Cu and that Cu dendrites still exist in the center of the Cu−CuO nanocomposite. Electrochemical impendance spectroscopy and cyclic voltammetry showed that the Cu−CuO nanocomposite has a stronger ability to promote electron transfer than the CuO NWs or CuO nanoparticles individually. The Cu−CuO nanocomposite was successfully used to...