State Key Laboratory of Electroanalytical Chemistry, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun 130022, Jilin, China.
ACS Nano. 2010 Jul 27;4(7):3959-68. doi: 10.1021/nn100852h.
The development of nanoscience and nanotechnology has inspired scientists to continuously explore new electrode materials for constructing an enhanced electrochemical platform for sensing. In this article, we proposed a new Pt nanoparticle (NP) ensemble-on-graphene hybrid nanosheet (PNEGHNs), a new electrode material, which was rapidly prepared through a one-step microwave-assisted heating procedure. The advantages of PNEGHNs modified glassy carbon electrode (GCE) (PNEGHNs/GCE) are illustrated from comparison with the graphenes (GNs) modified GCE for electrocatalytic and sensing applications. The electrocatalytic activities toward several organic and inorganic electroactive compounds at the PNEGHNs/GCE were investigated, all of which show a remarkable increase in electrochemical performance relative to GNs/GCE. Hydrogen peroxide (H2O2) and trinitrotoluene (TNT) were used as two representative analytes to demonstrate the sensing performance of PNEGHNs. It is found that PNEGHNs modified GCE shows a wide linear range and low detection limit for H2O2 and TNT detection. Therefore, PNEGHNs may be an attractive robust and advanced hybrid electrode material with great promise for electrochemical sensors and biosensors design.
纳米科学和纳米技术的发展激发了科学家们不断探索新的电极材料，以构建用于传感的增强电化学平台。在本文中，我们提出了一种新的 Pt 纳米颗粒（NP）组装在石墨烯杂化纳米片（PNEGHNs）上的新型电极材料，该材料可通过一步微波辅助加热程序快速制备。通过与石墨烯（GNs）修饰的玻碳电极（GCE）相比，说明了 PNEGHNs 修饰的 GCE（PNEGHNs/GCE）的优势，用于电催化和传感应用。研究了 PNEGHNs/GCE 对几种有机和无机电化学活性化合物的电催化活性，与 GNs/GCE 相比，所有这些化合物的电化学性能都有显著提高。用过氧化氢（H2O2）和三硝基甲苯（TNT）作为两种代表性分析物来证明 PNEGHNs 的传感性能。结果发现，PNEGHNs 修饰的 GCE 对 H2O2 和 TNT 的检测具有较宽的线性范围和较低的检测限。因此，PNEGHNs 可能是一种有吸引力的稳健且先进的混合电极材料，有望用于电化学传感器和生物传感器的设计。
