中文摘要：

钯金属纳米线具有很多重要的性质，在气体传感器和化学反应催化等方面具有广泛的应用．本文中首先把胰岛素多肽在70℃下培养25h得到胰岛素纤维，然后通过经水解的氯化钯溶液和胰岛素纤维按一定比例混合获得氧化钯纳米线，并通过调节氯化钯溶液的水解温度．得到了2种尺寸的氧化钯纳米线，原子力显微镜测量结果表明纳米线的平均直径分别为7．5和20．1nm．最后，样品在氢气环境下加热至600℃并保持2h后自然冷却，对氧化钯进行还原得到钯金属纳米线．另外，还利用X射线光电子能谱对钯金属纳米线的化学组分进行了表征．

英文摘要：

Great attention has been paid to the palladium metal nanowires due to their wide potential application, in particular, as gas sensors and chemical reaction catalyst. In this work, the insulin fibrils were initially obtained by incubating the insulin peptides at 70℃ for 25 h. Then, the palladium oxide nanowires were synthesized by co-incubating the three-day-aged palladium chloride solution with pre-formed insulin fibrils for half an hour. Simply by adjusting the aging temperature of palladium chloride solution, the size of palladium oxide nanowires could be well controlled. The average diameter of nanowires varied from 7.5 to 20.1 nm as evaluated by atomic force microscopy. Finally, the palladium metal nanowires were successfully achieved by heating the sample up to 600℃ under the hydrogen atmosphere and keeping for 2 h before cooling down to room temperature. In addition, the X-ray photoelectron spectroscopy was also used to characterize the chemical composition of the fabricated palladium metal nanowires.