Guo Shaojun, Wen Dan, Dong Shaojun, Wang Erkang
State Key Laboratory of Electroanalytical Chemistry, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun 130022, Jilin, China.
Talanta. 2009 Feb 15;77(4):1510-7. doi: 10.1016/j.talanta.2008.09.042. Epub 2008 Oct 5.
Morphological control of nanomaterials is of great interest due to their size and shape-dependent chemical and physical properties and very important applications in many fields such as biomedicine, sensors, electronics and others. In this paper, we reported a simple strategy for synthesizing gold nanowire assembling architecture at room temperature. It is found that two important factors, the proper volume ratio of ethanol to water and poly(vinyl pyrrolidone) (PVP), will play important roles in synthesizing flower-like short gold nanowire assembling spheres. Furthermore, the obtained flower-like gold assembling spheres with high surface-to-volume ratio have been employed as enhancing materials for electrochemical sensing H(2)O(2). The present electrochemical sensing platform exhibited good electrocatalytic activity towards the reduction of H(2)O(2). The detection limit for H(2)O(2) was found to be 1.2 microM, which was lower than certain enzyme-based biosensors.
由于纳米材料的尺寸和形状依赖性化学和物理性质以及它们在生物医学、传感器、电子等许多领域的非常重要的应用，纳米材料的形态控制备受关注。在本文中，我们报道了一种在室温下合成金纳米线组装结构的简单策略。研究发现，乙醇与水的适当体积比和聚乙烯吡咯烷酮（PVP）这两个重要因素在合成花状短金纳米线组装球体中起着重要作用。此外，所获得的具有高表面积与体积比的花状金组装球体已被用作电化学传感H₂O₂的增强材料。当前的电化学传感平台对H₂O₂的还原表现出良好的电催化活性。H₂O₂的检测限为1.2微摩尔，低于某些基于酶的生物传感器。
