State Key Laboratory of Electroanalytical Chemistry, Changchun Institute of Applied Chemistry, Chinese Academy of Science, RenMin Street 5625, Changchun 130022, Jilin, PR China.
Talanta. 2010 Oct 15;82(5):1845-52. doi: 10.1016/j.talanta.2010.07.087. Epub 2010 Aug 7.
Urchin-like gold submicrostructures (UGS) were successfully synthesized by a seed-mediated method which is quite facile and does not need any template or surfactant agent. The effect of the added silver seeds on the morphology and size of final products were investigated, and a possible growth mechanism of crystals was proposed. Electrochemical characterization indicated that these UGS have better catalytic activity for the glucose oxidation compared with flower-like gold submicrostructures (FGS), which could be ascribed to its higher surface to volume ratio. An electrochemical nonenzymatic glucose sensor was fabricated simply by casting the UGS and Nafion solution onto glass carbon electrode. This sensor displays a wide linear range from 0.2 to 13.2mM with a high sensitivity of 16.8 μA mM(-1)cm(-2), and a detection limit of 10 μM. The unique properties of this sensor, such as fast response and well stability reveal the potential application of the UGS based materials in nonenzymatic detection of glucose.
通过种子介导的方法成功合成了类海胆状的金亚微米结构（UGS），该方法非常简单，不需要任何模板或表面活性剂。研究了添加的银种子对最终产物形貌和尺寸的影响，并提出了一种可能的晶体生长机制。电化学表征表明，与花状金亚微米结构（FGS）相比，UGS 对葡萄糖氧化具有更好的催化活性，这可归因于其更高的表面积与体积比。通过将 UGS 和 Nafion 溶液浇铸到玻碳电极上，简单地制备了电化学非酶葡萄糖传感器。该传感器在 0.2 至 13.2mM 的宽线性范围内显示出高灵敏度 16.8 μA mM(-1)cm(-2)，检测限为 10 μM。该传感器具有快速响应和良好稳定性等独特性质，表明基于 UGS 的材料在非酶葡萄糖检测中的潜在应用。
