金属纳米线被广泛应用于电子传导特性,电子器件以及其他领域的研究。本文中我们报道了一种简单有效的方法制备网络状的金纳米线,这种方法主要利用了苯胺在不同pH值下不同的氧化还原特性。此外,我们也研究了其他反应条件对生成的金纳米结构的影响,并提出这种网络状金纳米线可能的形成机制。
Xu Fan , Lianke Liu , Zhirui Guo , Ning Gu , Lina ,Facile synthesis of networked gold nanowires based on the redox characters of aniline, Materials Letters 64 (2010) 2652–2654
Fig. 1. (a) TEM image, (b) the corresponding SAED pattern, (c) XRD pattern, (d) UV–vis–NIR absorption spectra, and (e) HRTEM image of the gold nanowires obtained at 80 °C, pH 7.0. (f) TEM image of the paramecium-like gold nanoaggregates obtained at 80 °C, pH 5.6. The inset of (f) is a magnified image of the paramecium-like gold nanoaggregates, bar 50 nm.
Fig. 2. Schematic of the possible formation process of the networked gold nanowires.