Department of Chemistry, Shanghai Normal University, Shanghai 200234, PR China.
Biosens Bioelectron. 2013 Mar 15;41:857-61. doi: 10.1016/j.bios.2012.08.032. Epub 2012 Aug 30.
A facile method of multi-potential step-scan has been employed to fabricate the dendritic silver nanostructures on a silver thin film based digital video disc (DVD) electrode. The morphologies of the nanostructures, the chemical composition, and the crystal structure have been characterized by field-emission scanning electron microscopy, energy-dispersed x-ray spectroscopy, and x-ray diffraction, respectively. The electrocatalytic activity of the resulting electrode toward the electro-reduction of hydrogen peroxide (H(2)O(2)) has been examined via cyclic voltammetry and amperometric analysis. The excellent linear relationship between current response and H(2)O(2) concentration is observed in the range from 5.88×10(-7) to 6.73×10(-5) mol L(-1) and the detection limit is 2×10(-7) mol L(-1) (S/N=3). The as-developed method has been employed to determine H(2)O(2) concentration in real samples.
一种简单的多电位阶跃扫描方法被用来在银薄膜的数字视频光盘（DVD）电极上制造树枝状银纳米结构。通过场发射扫描电子显微镜、能量色散 X 射线能谱仪和 X 射线衍射仪分别对纳米结构的形貌、化学成分和晶体结构进行了表征。通过循环伏安法和安培分析法研究了所得电极对过氧化氢（H（2）O（2））电还原的电催化活性。在 5.88×10（-7）至 6.73×10（-5）mol L（-1）的范围内观察到电流响应与 H（2）O（2）浓度之间的良好线性关系，检测限为 2×10（-7）mol L（-1）（S/N=3）。该方法已用于测定实际样品中的 H（2）O（2）浓度。
