一种用于金属氧化物纳米线合成的新方法。
A novel method for metal oxide nanowire synthesis.
作者信息
Rackauskas Simas, Nasibulin Albert G, Jiang Hua, Tian Ying, Kleshch Victor I, Sainio Jani, Obraztsova Elena D, Bokova Sofia N, Obraztsov Alexander N, Kauppinen Esko I
机构信息
NanoMaterials Group, Department of Applied Physics and Center for New Materials, Helsinki University of Technology, P.O.B 5100, FIN-02015, Espoo, Finland.
出版信息
Nanotechnology. 2009 Apr 22;20(16):165603. doi: 10.1088/0957-4484/20/16/165603. Epub 2009 Apr 1.
Nanowires (NWs) of metal oxides (Fe(2)O(3), CuO, V(2)O(5) and ZnO) were grown by an efficient non-catalytic economically favorable method based on resistive heating of pure metal wires or foils at ambient conditions. The growth rate of iron oxide NWs exceeds 100 nm s(-1). Produced NWs were typically 1-5 microm long with diameters from 10 to 50 nm. The produced metal oxide NWs were characterized by means of SEM, TEM, EDX, XPS and Raman techniques. The field emission measurements from the as-produced CuO NWs were found to have a threshold field as low as 4 V microm(-1) at 0.01 mA cm(-2). The formation mechanism of the NWs is discussed.
通过一种基于在环境条件下对纯金属丝或箔进行电阻加热的高效、无催化且经济实惠的方法，生长出了金属氧化物（Fe₂O₃、CuO、V₂O₅ 和 ZnO）纳米线。氧化铁纳米线的生长速率超过 100 nm s⁻¹。所制备的纳米线通常长 1 - 5 微米，直径为 10 至 50 纳米。通过扫描电子显微镜（SEM）、透射电子显微镜（TEM）、能量色散X射线光谱（EDX）、X射线光电子能谱（XPS）和拉曼技术对所制备的金属氧化物纳米线进行了表征。发现所制备的 CuO 纳米线的场发射测量在 0.01 mA cm⁻² 时具有低至 4 V µm⁻¹ 的阈值场。讨论了纳米线的形成机制。
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